Chlorination Agent Research Articles

Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process

A novel process based on chlorination roasting was proposed to simultaneously recover gold and zinc from refractory carbonaceous gold ore by using NaCl as chlorination agent. The effects of roasting temperature, roasting time and NaCl content on the volatilization rates of gold and zinc were investigated. The reaction mechanism and the phase transition process were also analyzed by means of SEM, EDS and XRD. The results demonstrated that under the optimal conditions of NaCl content of 10%, roasting temperature of 800 °C, roasting time of 4 h and gas flow rate of 1 L/min, the rates of gold and zinc were 92% and 92.56%, respectively. During low-temperature chlorination roasting stage, a certain content of sulfur was beneficial to the chlorination reactions of gold and zinc; and during high-temperature chlorination roasting stage, the crystal structure of vanadium-bearing mica was destroyed, and the vanadium-containing oxides were beneficial to the chlorinating volatilization of gold and zinc. Eventually, the chlorinated volatiles of gold and zinc could be recovered by alkaline solution.

The selective chlorination of nickel and copper from low-grade nickel-copper sulfide-oxide ore: Mechanism and kinetics

On account of the complex occurrence of valuable metals in a large amount of low-grade nickel sulfide ore, obstacles have been caused by using the existing metallurgical method. Therefore, we are reporting a new selective chlorination roasting and water leaching process to treat complex nickel sulfide ore. Anhydrous aluminum chloride was firstly used as the solid chlorination agent to sulfide ore. The chlorination mechanism for metals in nickel-copper sulfide ore were determined by thermodynamic calculation and experiment. The thermodynamic analysis showed that the predominant matter contributing to the chlorination of talc, lizardite, and magnetite were AlCl3 (both solid or gas) and the generated HCl, however, the chlorination of metal sulfide (pentlandite, chalcopyrite, and pyrite) were mostly contributed by the generated Cl2. The effect of roasting temperature, the roasting time, the mass ratio of AlCl3 to the ore, the content of O2 in the roasting atmosphere and the particle size of ore were investigated. The orthogonal experiments results showed that the optimal conditions of the chlorination roasting process were the roasting time of 3 h, the roasting temperature of 450 °C, the mass ratio of AlCl3 to ore of 1.5:1, the content of O2 of 20%, and particle size of the ore of 96–80 μm, under this condition, an extraction rate of nickel, copper, iron, and magnesium of 91.6%, 88.5%, 28.4%, and 16.4% was obtained. The chlorination mechanism is that, in the chlorination roasting process, nickel and copper were transferred into their corresponding metal chlorides, while most of the iron and magnesium were transferred into ferric oxide and magnesia-alumina silicates, respectively. TAK (thermal analytic kinetics) were used to clarify the chlorination kinetics, the results showed that the apparent activation energy calculated from DSC data was 70.4 kJ·mol−1, while calculated from TG data was 86.5 kJ·mol−1 (average) by using the FWO method, one of the most probable mechanism function of the chlorination process was G(α)=0.8701[1-(1-α)0.8701] (integral form) and f(α)=(1-α)1.8701 (differential form). The chlorination selectivity for metals could give guidance to the extraction of metals (especially for valuable metals) either in nickel sulfide ore or other minerals with a complex metal occurrence.

Strengths of correlations with formation of chlorination disinfection byproducts: effects of predictor type and other factors

Measurements of the UV-Vis absorbance (Abs) and intensity of fluorescence emission (Fluor), as well as of concentrations of total or dissolved organic carbon (OC) in aqueous samples are commonly used to estimate the potential for disinfection byproducts (DBPs) formation during water chlorination. In this work, based on 574 linear associations collected from 70 experimental research papers published over the period of 1997-2019, the strengths of the correlations of Abs, Fluor, and OC with DBPs concentrations are compared. The correlations were expressed as approximately normally distributed Z-scores using Fisher variance-stabilizing transformation. The effects of specific prediction method, chlorination agent, water source, and DBPs type, with consideration of possible effects due to the presence of bromide, are examined against Z-scores by ANOVA, testing main effects and some variables interactions. The performed analysis is a first attempt to expose differences and patterns in correlation strengths associated with DBPs formation, based on systematically covered broad existing literature. Abs and OC concentration of water samples tend to demonstrate the strongest correlations with DBPs formation as compared with specific UV absorbance (SUVA) or intensity of fluorescence emission. Correlations of DBPs formation during chloramination demonstrated weaker strengths as compared with other chlorination agents, suggesting more caution in predicting DBPs concentrations, based on simple descriptors such as Abs, OC, and Fluor. In a series of different water types, the correlations with DBPs formation are expected to be enhanced, when wastewater is chlorinated. Non-fluorescent matter may be an important contributor to DBPs formation during water chlorination. When fluorescence intensity is considered as a predicting tool, choosing humic-like rather than proteinaceous fluorescence may enhance the strengths of the correlations with DBPs formation. Different performances of Abs, OC, and Fluor in correlating with DBPs formation may be beneficial for their concurrent use helping to optimize removal of different DBPs precursors.

Efficient co-extraction of lithium, rubidium, cesium and potassium from lepidolite by process intensification of chlorination roasting

Lepidolite is a precious multi-metal resources of lithium, rubidium, cesium and potassium. A chlorination process for efficient co-extraction of Li, Rb, Cs and K from lepidolite concentrate was investigated in this study. The lepidolite concentrate was roasted with a mixed chlorination agent of CaCl2 and NaCl at moderately high temperature followed by water leaching. The following optimal process conditions were identified: mass ratio of 30% CaCl2 and 20% NaCl to lepidolite concentrate, roasting temperature of 750 °C, roasting time of 45 min, water leaching temperature of 25 °C and liquid-to-solid ratio of 3:1. Under the optimal conditions, the extraction efficiencies of Li, Rb, Cs and K reached 92.49%, 98.04%, 98.33% and 92.90%, respectively. During chlorination roasting, the alkali metals in the lepidolite were transformed into water soluble chloride salts, along with the generation of insoluble phases, such as CaAl2Si2O8, CaF2 and NaAlSi3O8. After water leaching, a leachate with 5.15 g/L Li and few impurities such as aluminum was obtained, which was beneficial for subsequent leachate purification and metals recovery. This chlorination process is technologically feasible and potential for practical application.

Excited State Dynamics of Bistridentate and Trisbidentate RuII Complexes of Quinoline-Pyrazole Ligands.

Three homoleptic ruthenium(II) complexes, [Ru(Q3PzH)3]2+, [Ru(Q1Pz)3]2+, and [Ru(DQPz)2]2+, based on the quinoline-pyrazole ligands, Q3PzH (8-(3-pyrazole)-quinoline), Q1Pz (8-(1-pyrazole)-quinoline), and DQPz (bis(quinolinyl)-1,3-pyrazole), have been spectroscopically and theoretically investigated. Spectral component analysis, transient absorption spectroscopy, density functional theory calculations, and ligand exchange reactions with different chlorination agents reveal that the excited state dynamics for Ru(II) complexes with these biheteroaromatic ligands differ significantly from that of traditional polypyridyl complexes. Despite the high energy and low reorganization energy of the excited state, nonradiative decay dominates even at liquid nitrogen temperatures, where triplet metal-to-ligand-charge-transfer emission quantum yields range from 0.7 to 3.8%, and microsecond excited state lifetimes are observed. In contrast to traditional polypyridyl complexes where ligand exchange is facilitated by expansion of the metal-ligand bonds to stabilize a metal-centered state, photoinduced ligand exchange occurs in the bidentate complexes despite no substantial MC state population, while the tridentate complex is extremely photostable despite an activated decay route, highlighting the versatile photochemistry of nonpolypyridine ligands.

An improved, scalable synthesis of Notum inhibitor LP-922056 using 1-chloro-1,2-benziodoxol-3-one as a superior electrophilic chlorinating agent.

Background: The carboxylesterase Notum has been shown to act as a key negative regulator of the Wnt signalling pathway by mediating the depalmitoleoylation of Wnt proteins. LP-922056 (1) is an orally active inhibitor of Notum. We are investigating the role of Notum in modulating Wnt signalling in the central nervous system and wished to establish if 1 would serve as a peripherally restricted control. An accessible and improved synthetic route would allow 1 to become more readily available as a chemical tool to explore the fundamental biology of Notum and build target validation to underpin new drug discovery programs.Results: An improved, scalable synthesis of 1 is reported. Key modifications include: (1) the introduction of the C7-cyclopropyl group was most effectively achieved with a Suzuki–Miyaura cross-coupling reaction with MIDA-boronate 11 (5 → 6), and (2) C6 chlorination was performed with 1-chloro-1,2-benziodoxol-3-one (12) (6 → 7) as a mild and selective electrophilic chlorination agent. This 7-step route from 16 has been reliably performed on large scale to produce multigram quantities of 1 in good efficiency and high purity. Pharmacokinetic studies in mouse showed CNS penetration of 1 is very low with a brain/plasma concentration ratio of just 0.01. A small library of amides 17 were prepared from acid 1 to explore if 1 could be modified to deliver a CNS penetrant tool by capping off the acid as an amide. Although significant Notum inhibition activity could be achieved, none of these amides demonstrated the required combination of metabolic stability along with cell permeability without evidence of P-gp mediated efflux.Conclusion: Mouse pharmacokinetic studies demonstrate that 1 is unsuitable for use in models of disease where brain penetration is an essential requirement of the compound but would be an ideal peripherally restricted control. These data will contribute to the understanding of drug levels of 1 to overlay with appropriate in vivo efficacy endpoints, i.e., the PK-PD relationship. The identification of a suitable analogue of 1 (or 17) which combines Notum inhibition with CNS penetration would be a valuable chemical probe for investigating the role of Notum in disease models.

Tap Microfiltration Attachment for Domestic Mechanic and Biological Purification of Drinking Water

During the last years membrane filtration as a method of disinfection of drinking water becomes widespread. Microfiltration method is important and interesting: microfiltration membrane traps the microorganisms which size exceeds 0.1mcm (bacteria, parasites, cysts). Water supply system in Georgian uses mainly mountain rivers water containing excessive quantities of the suspended particles (clay, sand) causing fouling of membranes and their putting out of action. We chose the polymer – fluoroplastic as a material for the membrane. It is stable to excessive chlorine, various acidic and alkaline agents. We produced the microfiltration membranes of predetermined pore dimensions. The experiment results prove that the membranes are selective to the suspended particles, colloids and microorganisms containing in water. We matched the chemical agents and the regenerants for the membrane regeneration purpose what allows multiple regeneration of the fouled filtration cartridges in home conditions and increases the microfiltration device life term.

The Most Significant Influences of Decontamination Mixtures Containing Chlorinating and Oxidizing Agents on Barrier Materials Formed by Isobutylene-Isoprene Rubber

The influences of hypochlorite DM with oil ingredient and without it, which is introduced into the armament not only by the Czech Armed Forces Chemical Corps, but also by the chemical services specialists of the Czech Republic Fire Rescue Service, on a substrate consisting of a barrier material based on isobutylene-isoprene rubber (butyl rubber) were presented in this paper. Based on the repeated exposure of the substrate formed by the barrier layer material selected by this decontamination mixture and its subsequent rinsing, a change of the breakthrough time has been studied using the MIKROTEST method employing the chemical warfare agent of sulfur mustard and Congo red as a detecting agent.

Facile Synthesis of Efficient Antibacterial Agent as CoFe₂O₄/Ag Composite Material Against Both Gram-Negative Escherichia coli and Gram-Positive Bacillus subtilis Bacteria.

We have suggested that a facile synthesis of CoFe2O4/Ag composite material as an antibacterial agent for substitution of a chlorination agent for microbial infected wastewater treatment. The CoFe2O4/Ag was synthesized by an impregnation method in assistance with trisodium citrate as a reducing agent. The as-prepared uncalcined CoFe2O4 (CFG), calcined CoFe2O4 (CFG600), and calcined CoFe2O4/Ag (CFG600/Ag) composites were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM) and Energy Dispersive X-ray (EDX) techniques. Antibacterial activities were also determined in liquid culture by measuring the minimum inhibitory concentrations (MIC) against Gram-negative Escherichia coli (E. coli) and Gram-positive Bacillus subtilis (B. subtilis) bacteria in vitro. Results showed that CFG600/Ag composites had an excellent antibacterial activity in comparison with CFG and CFG600 composites. The CFG600/Ag composites have completely inhibited the growth of both E. coli and B. subtilis bacteria from concentrations of more than 0.25 mg/ml. Furthermore, the FE-SEM study demonstrated the physical damage of bacteria when treated with CFG600/Ag composite material at a concentration of 0.10 mg/ml.

Investigation of sol-gel derived BaCl2:Eu2+ luminescent nanophosphor and the corresponding PVP@BaCl2:Eu2+ polymer nanocomposite

We have prepared Eu2+ (1%) doped BaCl2 nanopowders by using a hybrid sol-gel/thermal decomposition route using barium acetate and trichloracetic acid as in situ chlorination agent. Structural and thermal analysis data have shown that orthorhombic BaCl2 phase crystallization occurs at 260 °C. BaCl2:Eu2+ nanocrystals of about 100–200 nm in size were produced after annealing (in air) at 500 °C and they displayed Eu2+ d → f type luminescence at 396 nm. X-ray photoelectron spectroscopy indicated the presence of both Eu2+, Eu3+ ions species and a BaO passivating layer at the surface of the nanocrystals.A polymer nanocomposite (PVP@BaCl2:Eu2+) was also processed and its optical response under x-ray irradiation was found to be similar to that of the nanopowder. X-ray excited luminescence showed Eu2+ luminescence at 396 nm, whereas the thermoluminescence peak at 130 °C was assigned to the F(Cl)-center recombination with Eu2+ related hole centers.

Direct separation of uranium from lanthanides (La, Nd, Ce, Sm) in oxide mixture in LiCl-KCl eutectic melt

This paper reports the direct separation of U from lanthanides (Ln) in oxide mixtures in LiCl-KCl eutectic, a method that could simplify the pyrometallurgical reprocessing of UO2-based spent fuels. In the melt, the mixture of UO2 and lanthanide oxides (Ln2O3/LnO2) was chloridized by AlCl3, and then U was selectively recovered by forming U-Al alloys through the redox reactions of U(IV)/U(III) and U(III)/AlxU. The results showed that U could be efficiently separated from lanthanides with high separation factors (SFU/La = 1.1 × 104, SFU/Ce = 1.6 × 105, and SFU/Sm = 2.5 × 104). X-ray diffraction analysis indicated the predominant separation products to be Al3U and Al4U, whereas the real extraction rate of U was probably affected by trace amounts of O2− in the melt. For the first time, single-cell operation to separate U from Ln in mixed oxides is shown to be feasible by using AlCl3 as chlorination agent followed by electrodeposition.

Selective leaching of valuable metals from laterite nickel ore with ammonium chloride-hydrochloric acid solution

Abstract During the recent years, selective leaching from laterite ore has gained considerable interest from the scientific community because of the growing demand of valuable metals including nickel and cobalt. However, high energy consumption and serious environmental pollution have been the major drawbacks of the current leaching methods, leading to a strong desire for the development of alternative approaches. Herein, we have successfully developed a clean method to selectively leach nickel from laterite ore using chlorination hydrometallurgical technology, which has a greatly reduced environmental impact and mild reaction requirements. In this work, ammonium chloride solution was used as the chlorination agent and the process was achieved under 2 M of hydrochloric acid, 3 M of ammonium chloride and a liquid/solid ratio of 6:1 (mL/g) at 90 °C for 90 min. Notably, the process resulted in a good yield, with nickel (87.7%), cobalt (75.1%), manganese (95.6%), and iron (only 21.1%). The leaching mechanism was demonstrated by the analysis of XRD pattern of leaching residue and raw ore, suggesting that chloride ions are beneficial to the dissolution of goethite mineral in nickel laterite. When comparing with other chloride solutions which exhibit high leaching in weak acid, ammonium chloride has demonstrated a promising ability to activate hydrogen ion, as evidenced in the simulation result of OLI system. The reusability of ammonia chloride in leaching raffinate showed that this method has great potential for eco-friendly and practical industrial application toward sustainable refining of valuable metals from laterite nickel ores.

Efficient Chloride Salt Extraction of Platinum Group Metals from Spent Catalysts

We show that platinum (Pt) and palladium (Pd) can be efficiently removed from spent catalytic converters by means of a sintering process involving chloride salts. For Pt, mixing the crushed catalyst in an aqueous solution of chloride salts at catalyst/salt weight ratios ranging from 2.5 to 6.7, followed by drying, and 2-h sintering in the reactor furnace at 1100 °C, results in extraction of 80 ± 4% of the metal. For Pd, the addition of fumed silica to the dry chlorination agents was necessary in order to optimize extraction using fractional factorial design of experiments (DOE). Maximum Pd extraction of 93 ± 5% was achieved at 1100 °C with weight ratios of the catalyst material: CaCl2·2H2O:SiO2 = 1:0.6:1.2. Application of a similar protocol to Pt-containing catalytic converters would be expected to result in a similar high level of extraction efficiency. The primary advantage of the proposed extraction process is that it does not involve hazardous chemicals, strong bases/acids, or corrosive gases, and produces, as a byproduct, only small quantities of nontoxic silicate waste.

Thermodynamic Analysis on the Thermal Treatment of Electric Arc Furnace Dust-PVC Blends

This work reports a thermodynamic assessment of EAFD chlorination products stem from thermal decomposition products of PVC. Upon PVC pyrolysis, HCl gas is liberated in conjunction with several volatile organic matters leaving solid carbonaceous residue. EAFD contains appreciable quantities of zinc, iron and lead oxides. These react with HCl to form metal chlorides, if EAFD is added to the PVC as a dechlorination agent. Selective chlorination of zinc and lead present in EAFD leaving iron in its oxide form is of an apparent commercial value. Detailed thermodynamic analysis of EAFD chlorination by HCl was performed considering the effects of several variables. These include temperature, amount of chlorination agent, presence of oxidizing agent and the effect of presence of other EAFD constituents such as sodium, potassium, calcium, silicon and sulfur. It was found that 100% recovery of both zinc and lead can be achieved for mixture containing 50% EAFD and 50% PVC when pyrolyzed under inert conditions, but contaminated with at least 20% of the iron chloride. However, when thermal treatment is performed in the presence of oxygen, the 100% zinc and lead recoveries were achieved at lower temperature with a minimal iron contamination (< 2.6%). Removal of sodium and potassium chloride from EAFD prior to pyrolysis by washing, under oxidizing condition, has also resulted in great selectivity in zinc and lead chlorination. The behavior of other elements during chlorination process was also discussed. The results obtained shall be instrumental in efforts aiming to achieve optimum recycling operations for both categories of pollutants.

Selective Chlorinated Extraction of Iron and Manganese from Vanadium Slag and Their Application to Hydrothermal Synthesis of MnFe2O4

Several valuable elements, including V, Cr, Fe, Mn, and Ti, exist in vanadium slags. In this paper, an innovative way to extract Fe and Mn selectively and destroy the typical encompassed structure with NH4Cl has been proposed. Fe and Mn are then used to synthesize MnFe2O4, and the residue is an enriched Cr–V–Ti–O mixture. Moreover, the chlorination agent NH4Cl can be recycled in this process. Vanadium slag was mixed with various amounts of NH4Cl and NaCl in a temperature range from 300 °C to 900 °C for 1 to 8 h. The optimal conditions for the chlorination of Mn and Fe are NH4Cl–slag mass ratio of 2:1, NaCl–NH4Cl mass ratio of 0.308:1, 800 °C and 4 h. The manganese and iron chlorination ratio can be reached at 95% and 72%, respectively. The presence of NaCl can enhance the chlorination rate of manganese and iron. Manganese ferrite powders were prepared via hydrothermal treatment of iron and manganese in the leaching solution at a temperature of 140–200 °C. The synthesized MnFe2O4 exhibits high saturation m...

Control of disinfection byproducts (DBPs) by ozonation and peroxone process: Role of chloride on removal of DBP precursors

The objective of this study was to remove regulated DBP precursors by using ozonation and peroxone process (H2O2/O3). Regarding formation potentials of trihalomethanes (THMs) and haloacetic acids (HAAs), the role of chloride in chlorination and ozonation/peroxone processes was revealed. The organic compounds in water samples from rapid sand filtration preferably yielded the THM formation potentials, rather than HAAs. Ozonation with the typical applied doses (1–5 mg L−1) was ineffective for removals of THM and HAA precursors. The peroxone process only decreased the formation potentials of THMs. The reduction of THMs by the peroxone process resulted from decreases in either chloroform or dibromochloromethane. However, the limitation was found in the H2O2/O3 ratios of 2.0–3.0. The removals of HAA precursors were much more difficult than that of THM precursors by ozonation and peroxone processes. The oxidation of organic compounds was able to promote the HAA formations. Ozonation with the typical ozone doses increased the chloroform formations, while decreases in bromide-containing THMs occurred. Effect of ozonation on changes in HAAs speciation was unclear. The peroxone process likely promoted the dichloroacetic acids and trichloroacetic acids. The presence of chloride (1–5 g L−1) highly enhanced the THM and HAA formation potentials. NaCl addition greatly increased the bromide-containing THMs, while the chloroform decreased. For HAAs, the presence of chloride promoted the bromide-containing HAAs and monochloroacetic acids. The presence of chloride played a role as a promotor for strong chlorinating agents in chlorination, rather than as a scavenger in ozonation and peroxone processes.

Selective recovery of uranium from Ca-Mg uranates by chlorination

A chlorination process is proposed for the uranium extraction and separation using CalciumMagnesium uranates such as starting reactants which were obtained by precipitation from uranyl nitrate solutions with calcium hydroxide. The study is based on thermodynamic and reaction analysis using chlorine gas as chlorination agent. The results showed that the chlorination reaction of Ca uranate is more feasible to occur than the Mg uranate. The products obtained after chlorination reactions were washed with deionized water to remove the chlorides produced and analyzed. The XRD patterns of the washed products indicated that the chlorination between 400 and 500 °C result in a single phase of calcium uranate (CaUO4) as reaction product. The formation of U3O8 and MgU3O10 was observed at temperatures between 600 °C and 700 °C for 8 hs. The optimal conditions to recover uranium were 3 l h−1 of chlorine and 10 hs of reaction at 700 °C being U3O8 the single uranium product obtained.

Chlorination and purification of vanadium pentoxide with anhydrous aluminum chloride

Abstract A novel chlorination process was investigated to prepare high-purity vanadium pentoxide (V2O5). Anhydrous aluminum chloride (AlCl3) instead of toxic and corrosive chlorine (Cl2) was used as the chlorination agent. The chlorination temperature was decreased as low as 160 °C–170 °C. By adding sodium chloride (NaCl) into the chlorination system, the reaction rate and purity of the intermediate product, vanadium oxytrichloride (VOCl3) were both remarkably improved. Additionally, hydrolysis conditions were also discussed. It was found that the precipitation rate reached 93.56% under the conditions of vanadium concentration of 13.4–68.8 (V2O5)g/L and the ammonium adding coefficient of 0.8–1.0. Based on the optimal conditions, V2O5 with a purity of 99.95 wt% at least was obtained, the content of Fe, Al, Si, K, Na, Zn, P and other impurities were effectively reduced. Compared with the preparation method currently used in the industrial process, the novel chlorination method proposed is an environmently-friendly process with the low cost, high selectivity, and simplified operation advantages. Therefore, the novel chlorination method exhibits a competitive potential in industrial application.

Method for Recycling Tantalum from Waste Tantalum Capacitors by Chloride Metallurgy

The demand for tantalum (Ta) is rapidly increasing due to the manufacture of Ta capacitors (TCs) for electronic devices. With the increasing awareness of environmental protection and conservation of rare metal Ta, recycling of Ta from waste TCs (WTCs) is becoming a hot topic in current society. In this study, an efficient and environmentally friendly process for recycling Ta from WTCs by chloride metallurgy (CM) is proposed. In the CM process, the nontoxic FeCl2 is chosen as the chlorination agent. Thermodynamic analysis demonstrates that Ta can selectively react with FeCl2, and the generated TaCl5 can be easily separated and then condensed in the condensation zone. The recovery of Ta can reach 93.56% under the optimal chlorination parameters as follows: heating temperature of 500 °C, FeCl2 addition amount of 50%, holding time for 2 h, and particle size of Ta-rich powder less than 0.24 mm. Moreover, the kinetic mechanism is discussed, and the rate-controlling step in the chlorination reaction of Ta is det...

Study on the thermodynamic viability of NiO and CuO chlorination with C2Cl4 at high temperatures

Direct chlorination roasting is a worldwide applied industrial process for extracting metals from oxides and oxide mixtures, whereas specific oxides react with chlorine resulting in volatile chlorinated molecules, which can then be separated and further reduced to metallic products. In this context, the presence of a reducing agent, graphite for example, has proven to stimulate not only the thermodynamics but also the kinetics of the reactions involved. However, the search for alternative, and environmental friendlier, chlorination agents leaded to a strong development of research regarding the possible substitution of chlorine by either solid (NaCl, CaCl2) or gaseous compounds (CCl4, COCl2, C2Cl4), preserving the thermodynamic viability and desired process kinetics. In this context, the merit of processes using gaseous chlorinated agents containing carbon atoms in their structure should be considered. Among the alternative chlorinating agents already explored in literature, a considerable lack of information regarding the use of C2Cl4 can be clearly detected. This fact served as a start motivation for the development the present work, which focuses on the theoretical (thermodynamic simulations) and experimental study of the thermodynamic viability of chlorination of NiO and CuO pure samples under a C2Cl4/N2 atmosphere in the temperature range between 1123K and 1323K, which were characterized, both initially and during the process, through X-Ray diffraction (XRD) and electron scanning microscopy (SEM). According to the simulations, both NiO and CuO should react with C2Cl4 under diluted conditions, thereby forming only volatile chlorides. These facts have been confirmed by the experimental data, although in the case of NiO a much lower mass loss has been detected. The results also confirm that C2Cl4 can be viewed as a potential chlorination agent for metallic oxides, and that significant driving force and kinetics can be found even under high dilution conditions, as exemplified by the reaction conversions determined for CuO (1123K) and NiO (1323K). In both cases neither graphite nor condensed chlorides have been detected, but regarding the kinetics, CuO reacted much faster, which could be explained by its lower thermodynamic stability, and weaker metal to oxygen chemical bond.