Formic Acid Medium Research Articles

Palladium Nanoparticles Supported on Activated Carbon (C) for the Catalytic Hexavalent Chromium Reduction

Hexavalent chromium is widely used in industry and causes human health and environmental problems due to its extremely toxic properties. On the contrary, trivalent chromium is necessary for living ecosystems. Therefore, reducing hexavalent chromium to trivalent chromium is the best strategy for detoxifying hexavalent chromium. Pd(0)@C nanocatalyst was prepared by a simple impregnation-reduction method in solution under mild conditions at 298 K and was identified by XPS, XRD, TEM, TEM–EDX, HR-TEM, and ICP-OES analyses. TEM results showed that very well-dispersed Pd nanoparticles were formed on the C surface (mean particle sizes 3.98 ± 0.24 nm). The catalytic performance of Pd(O)NPs impregnated on cheap and easily available commercial activated carbon were tested as heterogeneous nanocatalysts in the catalytic reduction of hexavalent chromium in the medium of formic acid, which is a good reducing agent, and sodium formate as the promoter at 298 K. It was determined that the formed Pd(0) nanoclusters could successfully reduce Cr(VI) to Cr(III) with high selectivity (~ 97%) in formic acid and sodium formate solution under mild conditions. It was also observed that the Pd(0)@C catalyst retained a significant (> 75%) initial activity even after the 5th use. In addition, the kinetic studies of the catalytic reduction reaction of Cr(VI) catalyzed by Pd(0)@C nanoparticles were investigated depending on the substrate [Cr2O72−], catalyst [Pd(0)@C], sodium formate [HCOONa], formic acid [HCOOH] concentrations, and temperature parameter. From the rich kinetic data obtained, the nature of the velocity equation was explained, and the activation parameters were calculated.

Simultaneous Detection of Ruthenium and Osmium by Photochemical Vapor Generation-Inductively Coupled Plasma-Mass Spectrometry

Efficient simultaneous photochemical vapor generation (PVG) of ruthenium (Ru) and osmium (Os) in the medium of formic acid was demonstrated. A flow-through photoreactor hyphenated to an inductively coupled plasma-mass spectrometer (ICP-MS) was used for the PVG and subsequent detection of the two elements. A similar synergistic enhancement from cobalt and cadmium ions on the PVG efficiency of both Ru and Os was discovered. Following the critical evaluation of the impacts of various transition metal ions, the concentrations of formic acid, cobalt, and cadmium ions, the flow rate of carrier gas, and the UV irradiation time, impressive limits of detection (LODs) of 5 and 0.5 ng L-1 were achieved for Ru and Os, respectively. The accuracy of the proposed PVG-ICP-MS method was validated by the analysis of several water samples with desirable spike recoveries obtained. Furthermore, the volatile compounds of Ru were directed and cryogenically trapped in acetonitrile and generation of carbonyls of Ru was verified by high-resolution electrospray ionization-mass spectra (ESI-MS).

Palladium nanoparticles supported on multı-walled carbon nanotube (MWCNT) for the catalytic hexavalent chromium reduction

Chromium (VI) is widely accepted as an acute toxic contaminant in living ecosystems, while the trivalent Chromium form (III) is thought to be an important element for living beings. This study showed that zero palladium (Pd0) metal nanoparticles supported onto a multi-walled carbon nanotube (MWCNT) catalyst (Pd@MWCNT) effectively catalyzed the reduction reaction of Chromium (VI) to Chromium (III) using HCOOH (formic acid) as a reducing agent. The catalyst (Pd@MWCNT) was prepared reproducibly in the aqueous mixture at room conditions through the impregnation-reduction technique and identified using some analytical characterization techniques (HRTEM, DR/UV–vis, TEM-EDX, TEM, XPS, ICP-OES, and P-XRD). The results of the characterization studies show that the palladium(0) nanoparticles (demean = 2.20 ± 0.25 nm) are very well dispersed onto the MWCNT support material surface. The stability and activity of catalytic performance of Pd(0) metal nanoparticles were investigated in the reactions of Chromium (VI) to Chromium (III) in HCOOH solution. The results show that the Pd@MWCNT catalyst exhibited excellent activity (TOF = 281 mol Cr2O72−/mol Pd min), even after 5 times of reuse (<86%) in the reduction reaction of Chromium (VI) to Chromium (III) at 298K. In addition, this study includes very rich kinetic data depending on [Pd@MWCNT], [HCOOH], [HCOONa], [Cr2O72−] concentrations and temperature parameters to determine the nature of the reduction rate and activation parameters of Cr(VI) catalyzed by Pd@MWCNT nanocatalyst in the formic acid medium as a reducing agent.

The inhibition performance of heterocyclic compounds on Q235 steel in methanol/formic acid medium: Experimental and theory

The present paper discusses the adsorption and inhibitory effect of nitrogen-containing compound, 1-dodecyl-3-methyimidazolium chloride (DMIC), dodecylpyridinium chloride (DPC) and hexadecylpyridinium chloride monohydrate (HDPC) on Q235 steel corrosion in a new system（10 mol·L−1 methanol/0.1 mol·L−1 formic acid medium. The experimental study was carried out using a series of techniques such as weight loss, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). contact angle test, Raman spectra, X-ray photoelectron spectroscopy (XPS) and atomic force microscope (AFM) served to identify microscopic variation on Fe surface. Adsorption isotherm model controlling the adsorption process are calculated and discussed. Moreover, the relationships between molecular structure and corrosion inhibition performance of three inhibitors were verified by quantum chemical calculation and molecular dynamics simulation. The results obtained from the electrochemical methods showed that DMIC, DPC and HDPC imparted high resistance and behaved as mixed-type corrosion inhibitors dominated with anode. inhibition efficiency (η%) increased with the increase of inhibitors concentration to attained 88.81%, 92.69%, 93.67% at 0.06 mol·L−1, respectively. Surface studies confirmed the existence of an adsorption film on the metal surface. The obtained results demonstrated that the adsorption process on the metal surface followed the Langmuir adsorption model. Quantum chemical calculations and molecular dynamics simulation (MD) testified the effect of the chemical structure of three inhibitors on its inhibition efficiency, which had a good agreement with the experimental data.

Chalcopyrite Leaching with Hydrogen Peroxide in Formic Acid Medium

This study is concerned with the leaching process of copper with hydrogen peroxide (H2O2) and formic acid (HCOOH) from the Kure chalcopyrite concentrate. All experiments were carried out in a leaching system equipped with an adjustable temperature shaker under atmospheric pressure. The needed oxygen was provided by H2O2 decomposition to achieve the oxidizing leaching medium. The parameters affecting leaching process, H2O2 concentration, HCOOH concentration, sulfuric acid (H2SO4) concentration, leaching time, liquid/solid ratio and stirring speed, were studied. The optimum experimental conditions were determined as leaching temperature 40 °C, leaching time 120 min, H2O2 concentration 1.2 M, HCOOH concentration 3 M and stirring speed 500 rpm. It was observed that there was no positive effect of sulfuric acid (H2SO4) concentration on the metal extraction. In addition, the percentage of copper passing to solution was increased from 7.83 to 62.37% as a result of the liquid/solid ratio increasing from 2.0 to 100, respectively. Consequently, formic acid could be used as an alternative and organic leaching agent in the selective leaching of chalcopyrite and even for leaching processes of the other oxidized and sulfured ores containing precious metals.

UV photochemical vapor generation of Cd from a formic acid based medium: optimization, efficiency and interferences

UV-photochemical generation of cadmium volatile species was carried out from formic acid medium containing ferrous ions resulting in improved reproducibility.

Transition metal ion Co(II)-assisted photochemical vapor generation of thallium for its sensitive determination by inductively coupled plasma mass spectrometry

Herein, a sensitive method for the determination of trace thallium (Tl) in water samples was established using photochemical vapor generation (PVG) for gaseous sample introduction into an inductively coupled plasma mass spectrometer (ICP-MS) for quantitation. Various transition metal ions were spiked and studied as enhancement reagents to assist the photochemical generation of volatile thallium species in the medium of formic acid. An impressive limit of detection (LOD) of 11 ng L−1 was obtained with 20% formic acid solution containing 5 mg L−1 of cobalt ions, 210 s for UV irradiation and 50 mL min−1 carrier gas flow rate. The accuracy and reliability of the present method was validated by analysis of a water certified reference material, BWB2198-2016, as well as two types of real water samples (tap water and bottled drinking water), with spike recoveries between 102% and 109% achieved.

Cobalt and Copper Ions Synergistically Enhanced Photochemical Vapor Generation of Molybdenum: Mechanism Study and Analysis of Water Samples.

Herein, we report a discovery that photochemical vapor generation (PCVG) of molybdenum (Mo) can be synergistically enhanced dramatically by cobalt and copper ions sourced from acetates in the medium of formic acid, utilizing a flow-through reactor. The nature of this new PCVG was probed for the first time by an electron paramagnetic resonance (EPR) spin trapping technique for its possible reaction mechanism. Carboxyl and hydroxyl free radicals were verified during PCVG processes, and the results indicate that variations in the relative amounts and proportions of free radical species may account for the synergistic effect from concomitant Co2+ and Cu2+, as well as the generation of molybdenum hexacarbonyl from the UV-induced photolysis of formic acid. Under "dry" plasma conditions, the simultaneous spiking of Co2+ and Cu2+ to 20% (v/v) formic acid solutions and a 60 s irradiation time could give rise to a 15-fold enhancement in signal intensities, together with a blank-limited but still impressive limit of detection of 6 ng L-1 (6 ppt) by inductively coupled plasma mass spectrometry (ICP-MS). The accuracy and reliability of this methodology was validated by analysis of molybdenum in a seawater certified reference material, CASS-6, as well as two varieties of drinking water and seawater samples, with satisfactory spike recoveries (91-101%).

Friedel-Crafts Alkylation over Zr-Mont Catalyst for the Production of Diesel Fuel Precursors.

Heterogeneous Zr-Mont catalyst prepared by a simple protocol was employed for the production of diesel fuel precursors via Friedel–Crafts (FC) alkylation of petroleum-derived arenes (e.g., mesitylene, xylene, and toluene) with biomass-derived 5-(hydroxymethyl)furfural (HMF), HMF derivatives, and carbohydrates. Initially, several acidic catalysts were screened for the FC alkylation of mesitylene with HMF in nitroethane solvent. Among all, Zr-Mont catalyst gave an exceptionally high yield (80%) of mesitylmethylfurfural (MMF). The catalytic activity of Zr-Mont was also evaluated for the alkylation of different petroleum-derived arenes with ester/halogen derivatives of HMF. Suitable acid strength and high surface area of Zr-Mont were its major attributes to make it the most efficient solid acid catalyst for this FC reaction. Even after several reuses, the catalytic activity of Zr-Mont was found to be consistent, which was also evidenced by the acidity measurements of fresh and reused Zr-Mont catalysts by temperature-programmed desorption of ammonia and pyridine Fourier transform infrared spectroscopy techniques. Direct conversion of glucose to diesel fuel precursors was also attempted over Zr-Mont catalyst in mesitylene and polar nonacidic solvents at 150 °C. However, the activity of Zr-Mont catalyst was limited for glucose dehydration to HMF and MMF did not form. When the same experiment was performed in formic acid medium, MMF was produced in 34% yield. After the addition of formic acid, the reaction becomes biphasic which contains mesitylene as an organic phase and formic acid as an aqueous phase. Formic acid worked as a solvent, reactant, and cocatalyst, whereas mesitylene worked as a reactant and product extraction phase to enable easy product isolation. With this strategy, other diesel fuel precursors were also produced in 26–30% yields from glucose and different arenes. Similar strategy was successfully extended for the conversion of sucrose to diesel fuel precursors.

An Integrated Production of Diesel Fuel Precursors from Carbohydrates and 2‐Methylfuran over Sn‐Mont Catalyst

AbstractCondensation of 5‐(hydroxymethyl)furfural (HMF) with 2‐methylfuran provides precursor of diesel fuel. However, HMF production is critical due to its tedious isolation and purification. Herein, we have developed an integrated process for production of diesel precursors directly from cheap HMF precursors and 2‐methylfuran. This process involves, dehydration of carbohydrates to HMF followed by latter's condensation with 2‐methylfuran to give 5,5′‐((5‐((5‐methylfuran‐2‐yl)methyl)furan‐2‐yl)methylene)bis(2‐methylfuran) (1). Over Sn‐Mont catalyst, in solvents like water, DMSO and C4mimBr the product 1 was produced in negligible yields. The yield of 1 was significantly improved to 36% in formic acid medium. Sn‐Mont facilitates the isomerization of glucose to fructose with its Lewis acid sites and formic acid promotes the dehydration of fructose to a mixture of HMF +5‐(formyloxymethyl)furfural (FMF) which was further treated with 2‐methylfuran in same pot. The product 1 was obtained with 40% and 54% yields from sucrose and fructose, respectively. Using this strategy xylose was converted into 5,5′‐(furan‐2‐ylmethylene)bis(2‐methylfuran) (2) in 25% yield.

Studies on photochemical vapor generation of selenium with germicidal low power ultraviolet mercury lamp

Photochemical vapor generation (photo-CVG) with flow injection - atomic fluorescence spectrometry was investigated for the determination of selenium, using formic and acetic acids as photochemical reagents. Using a germicidal low power ultraviolet mercury-based lamp, emitting both the 185 and 254nm Hg lines, mild reaction conditions can be achieved in formic acid medium, where optimal sensitivity was obtained at 0.3–0.5% w/w acid concentrations, whereas the optimal sensitivity could be attained with acetic acid in the range from 12 to 35% w/w. The only volatile Se product identified by gas chromatography–mass spectrometry from formic acid-based photo-CVG was selenium carbonyl. A series of dedicated experiments were performed using photo-CVG and pure dimethylselenide in order to identify reaction pathways contributing to the formation of non-volatile selenium species or to the degradation of volatile selenium species. Under the optimized conditions in formic acid, using 250μL sample volume, the limits of detection and quantification were 0.10 and 0.35μgL−1, respectively. The effect of several interfering species was investigated and the method was tested in the analysis of certified reference materials.

On-line UV photochemical generation of volatile copper species and its analytical application

Volatile Cu species were on-line generated by photochemical reduction in a formic acid medium utilizing a unique flow-through photochemical reactor. Digests of biological samples in 18% formic were introduced to the photochemical vapor generation (PVG) reactor under conditions wherein copper-containing species were initially retained on the reactor wall following a purge of the line with air and desorbed in the presence of a plug of 60% formic acid to yield volatile species which were transported to a gas–liquid separator and introduced to multi-collector inductively coupled plasma spectrometry (MC-ICPMS). Sensitivity of the proposed method could be further improved if a sample solution is repeatedly introduced using several cycles comprising loading and drying steps. However, the unstable volatile Cu species generated by PVG together with the early release of Cu during drying step resulted in a poor measurement precision of near 30% (n=4, RSD) and a non-linear correlation between the signal intensity and the Cu2+ concentration. Despite the above shortcomings, the accurate and precise determination of Cu concentrations in biological samples was achieved by applying isotope dilution (ID) calibration. A method detection limit of 8ngg−1 normalized to a nominal test mass of 0.25g of sample was obtained based on ID quantification. Method validation was demonstrated by analysis of three biological certified reference materials of TORT-3, SRM 1566b and DOLT-5 with satisfying results. Concentrations of 490.8±0.6, 71.88±0.06 and 34.95±0.04μgg−1 (1SD, n=4) with precisions of 0.12, 0.08 and 0.13% RSD for Cu were obtained in TORT-3, SRM 1566b and DOLT-5, respectively, in good agreement with certified values.

Determination of thimerosal in pharmaceutical industry effluents and river waters by HPLC coupled to atomic fluorescence spectrometry through post-column UV-assisted vapor generation

A high performance liquid chromatography coupled with atomic fluorescence spectrometry method for the determination of thimerosal (sodium ethylmercury thiosalicylate, C9H9HgNaO2S), ethylmercury, and inorganic mercury is proposed. Mercury vapor is generated by the post-column reduction of mercury species in formic acid media using UV-radiation. Thimerosal is quantitatively converted to Hg(II) followed by the reduction of Hg(II) to Hg(0). This method is applied to the determination of thimerosal (THM), ethylmercury (EtHg) and inorganic Hg in samples of a pharmaceutical industry effluent, and in waters of the San Luis River situated in the west side of San Luis city (Middle West, Argentine) where the effluents are dumped. The limit of detections, calculated on the basis of the 3σ criterion, where 0.09, 0.09 and 0.07μgL−1 for THM, EtHg(II) and for Hg(II), respectively. Linearity was attained from levels close to the detection limit up to at least 100μgL−1.

Enhancement of hydrogen production and power density in a bio-reformed formic acid fuel cell (BrFAFC) using genetically modified Enterobacter asburiae SNU-1

The objective of this research was to enhance hydrogen production and power density of a bio-reformed fuel cell (BrFAFC) in the fermentative hydrogen-producing bacterium, Enterobacter asburiae SNU-1, by genetic manipulation and treatment for cell stability. At certain formate concentrations and pHs, formate hydrogen lyase (FHL) decomposes formate to hydrogen and CO 2 . FHL is expressed by the FhlA transcription activator. Consequently, over-expressing the fhl A gene will increase FHL activity. We tested hydrogen productivity in peptone-yeast extract-glucose (PYG) growth medium and in formate production medium using fhl A over-expressed E. asburiae SNU-1 and found that specific hydrogen production was enhanced by 36.89% and 56.28%, respectively. Using a 25 mM optimized concentration of MgSO 4 , cell autolysis, which impedes hydrogen production in formic acid media, decreased; therefore, hydrogen production increased by 18%. A BrFAFC performance test was conducted in 300 mM formic acid containing 25 mM MgSO 4 . The BrFAFC using fhl A over-expressed SNU-1 as a cell catalyst for hydrogen production showed similar fuel cell performance up to 0.6 V compared to that of a proton exchange membrane fuel cell supplying pure H 2 gas, and also generated a two-fold maximum power density than that using the SNU-1wild type. • Hydrogen production and power density of a bio-reformed fuel cell (BrFAFC) were enhanced. • Using fhl A over-expressed Enterobacter asburiae SNU-1 enhanced specific hydrogen production. • Using optimized concentration of MgSO4, cell autolysis decreased, therefore, increasing hydrogen production. • The enhanced BrFAFC showed similar performance up to 0.6 V compared to that of a proton exchange membrane fuel cell supplying pure H 2 gas. • The enhanced BrFAFC generated a two-fold maximum power density than that using the SNU-1wild type.

First insights of the Pdpt/C and Pdptru/C Electrocatalysts Towards Glycerol Electro-Oxidation in Alkaline Medium

Platinum is a powerful and widely catalyst used for oxidation of various molecules like glycerol [i] . Compared to others catalysts (example Au), Pt has a lower oxidation potential in alkaline medium, however shows low kinetics for the reaction [ii] ,[iii] . Furthermore several studies have shown that the glycerol electrooxidation on Pt electrodes leads to the formation of various by-products causing decrease in the efficiency of the systemiv. Another disadvantage of Pt as catalysts is that platinum is an expensive noble metal and has low natural abundance.In this study we used PdPt and PdPtRu based electrocatalysts for glycerol electro-oxidation in alkaline medium. The carbon-supported materials were prepared by formic acid medium[iv]. After thorough physic-chemical characterizations, they were evaluated with regards to the glycerol electro-oxidation reaction. The experiments were conducted in 1.0 M NaOH solutions at 25°C, in absence/presence of 0.1 M of glycerol.In absence of glycerol, the cyclic voltammograms (CV) for all electrocatalysts show typical behavior of Pd, Pt and Ru materials. In presence of glycerol, Pd25Pt25Ru50/C electrocatalyst presented better performance; the onset potential for this material was close to 0.4 V vs. RHE, similar to Pt/C and the maximum peak current obtained was 107 mA cm-2, against 76 mA cm-2obtained for Pt/C electrocatalyst.FTIR measurements for all electrocatalysts were assessed to investigate the possible by-products from the glycerol electro-oxidation reaction (Fig. 1). For all materials, Pt/C, Pd/C, Pd50Pt50/C and Pd25Pt25Ru50/C, was possible identify four main absorption bands from glycerol electro-oxidation, which clearly evidence that the main products from glycerol electro-oxidation reaction are the same for any of these catalysts. The absorption band at 1308 cm-1 is typical of oxalate ions and it is presented in all electrocatalysts. The double band at 1349 and 1382 cm-1 are typical of formate ions standard spectra. The double band was only seen for Pd/C and Pd25Pt25Ru50/C electrocatalysts.As glycerol electro-oxidation leads to the formation of various by-products, formic acid can be one, however platinum electrocatalysts is able to oxidize formate ion to CO2. These results are consistent, since for Pt/C (Fig. 1B) electrocatalysts was not identified the double band feature of formic acid, however a single band was identified at 1387 cm-1, feature of carbonate from CO2. Pd50Pt50/C (Fig. 1C) electrocatalysts exhibited similar behavior for Pt/C.Then, according to results obtained from FTIR spectroscopy, the electro-oxidation of glycerol on Pt/C and Pd50Pt50/C electrocatalysts leads to the formation of by-products such as oxalate, carbonate and other carboxylates (1572 cm-1), whereas Pd/C and Pd25Pt25Ru50/C (Fig. 1A and B, respectively) leads to the formation of oxalate, formate and carboxylates ions. Probably, carbonate also may be produced but the presence of double band in the range of 1349 – 1382 cm-1 may be overlapped the carbonate band. This seems to mean that the higher amount of Pt in the catalysts contribute to the oxidize glycerol directly to CO2.The authors thank Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (particularly, process n. 2012/10856-7) [[i]]Garcia, R. Besson, M. Gallezot, P. Chemoselective catalytic oxidation of glycerol with air on platinum metals. Appl Catal A: Gen . v. 127, p. 165-176, 1995. [[ii]]Gomes, J. F. Tremiliosi-Filho, G. Spectroscopic studies of the glycerol electro-oxidation on polycrystalline Au and Pt surfaces in acidic and alkaline media. Electrocatalysis. v. 2, p. 96- 105. 2011.[[iii]]Kwon, Y. Schouten, P. J. Koper, M. T. M. Mechanism of the catalytic oxidation of glycerol on polycrystalline gold and platinum electrodes. ChemCatChem. v. 3, p. 1176-1185. 2011.[[iv]]Pinheiro, A.L.N. Oliveira-Neto, A. de Souza, E.C. Perez, J. Paganin, V.A. Ticianelli, E.A. Gonzalez, E.R. Electrocatalysis on noble metal and noble metal alloys dispersed on high surface area carbon. J. New Mater. Electrochem. Syst. 6 (2003)

Kinetics of furfural destruction in a formic acid medium

Kinetics of furfural degradation in a formic acid catalyst was studied, and it was found out that the overall order of the reaction changes with the amount of acid catalyst.

Response to Comment on “Mechanism of PtIVSonochemical Reduction in Formic Acid Media and Pure Water”

Contrary to radiolysis, sonochemistry is not only based on radical processes and further effects such as local activation or heating must be considered in particular for the sonolysis of formic acid. In the same way, the high local concentration of radicals observed in sonochemistry can induce different mechanisms compared to radiolysis.

Comment on “Mechanism of PtIV Sonochemical Reduction in Formic Acid Media and Pure Water”

Sonochemical formation of Pt0 nanoparticles in formic acid media involves the reduction of PtVI by carboxyl radicals (.CO2H/CO2.−).

Single-step procedure for trace element determination in synovial fluid by dynamic reaction cell-inductively coupled plasma mass spectrometry

A fast and single-step procedure for the dissolution of human synovial fluid in formic acid and further determination by dynamic reaction cell-inductively coupled plasma mass spectrometry (DRC-ICPMS) with a high-efficiency sample introduction system was developed. The samples were collected, treated and analyzed in the same screw-capped tubes. In order to overcome the effect of considerable carbon content, the sample introduction, nebulization and ICP operating conditions were carefully optimized. Furthermore, DRC technology with CH4 as reaction gas was used for the elimination of spectral interferences due to polyatomic ions. The effect of the sample matrix was evaluated and mitigated through comparison of direct calibration against aqueous standards, direct calibration in formic acid media and analyte addition calibration. The recommended procedure involved low dilution and low detection limits (from 0.003μgL−1 for U to 13.3μgL−1 for Ti) with adequate precision (from 0.6% for Co to 6.6% for Ti). The proposed method was successfully applied to determine 16 trace elements in concentrations from 0.03μgL−1 (Cd) to 88.2μgL−1 (Cu) in human synovial fluid samples.

Отримання та дослідження епоксиду ріпакової олії як модифікатора для дорожніх бітумів

Petroleum bitumen, used for making asphalt coatings do not always meet the high quality standards. Therefore, they are modified by various modifiers. It was found that bitumen epoxy compounds of higher olefins based on renewable raw materials allows improving the operational characteristics of road surfaces. An urgent need of this work is to obtain epoxide rapeseed oil and to determine its properties in particular thermal stability. The most widespread way of preparation of epoxy rapeseed oils is epoxidation in the medium of formic acid and hydrogen peroxide. A thermal stability was investigated by comprehensive thermogravimetric, differential and thermal analysis, and infrared spectroscopy. Analyzing the results of comprehensive thermogravimetric, differential and thermal analysis and infrared spectroscopy, we can conclude that the ERO heating of to 130 ° C, it is thermally stable. These data allow us to determine the optimal conditions for making compositions for bitumen modification. Also in the the course of work we proposed a way epoxidation of oils by cutting process stages and without the use of solvent