Zeolite Y Research Articles

Direct modification of pelletized 13X zeolite by atomic layer deposition toward effective CO2 capture from flue gas

As a promising sorbent material for post combustion CO2 capture, 13X zeolite has been broadly investigated in pressure/vacuum swing adsorption (P/VSA). However, recent P/VSA process simulation studies have posited that some metal organic frame works (MOFs) with reduced CO2 and N2 adsorption affinities and adsorption enthalpies can enable process level improvements, suggesting that the CO2/N2 adsorption strength in 13X may be stronger than what is optimal for post combustion CO2 capture (PCC) via P/VSA. Via preferential H2O adsorption on strong adsorption sites in 13X zeolite, we found that temporarily passivating these sites led to enhancements in CO2 working capacity (5–15 kPa CO2, 30 °C) and CO2/N2 separation factor (5–15 kPa CO2, 1–85 kPa N2, 30 °C) by 12 % and 94 %, respectively. To permanently weaken the adsorption strength in 13X, we employed H2O/TiCl4 atomic layer deposition (ALD) to “passivate” the strong adsorption sites and thus fabricate a novel adsorbent, Ti-13X, and investigated the effect of selective inhibition of high adsorption strength sites on the thermodynamic CO2/N2 adsorption properties. The modification technique resulted in suppressed CO2 and N2 adsorption affinity, manifesting in a 10 % and 133 % increase in the CO2 working capacity (5–15 kPa, 30 °C) and CO2/N2 separation factor (5–15 kPa CO2, 1–85 kPa N2, 30 °C), respectively. CO2 microcalorimetry experiments showed a suppressed and homogenized CO2 heat of adsorption in Ti-13X versus pristine 13X, indicating that high enthalpy CO2 adsorption was inhibited while the CO2 physisorption behavior was preserved. When evaluated using the General Evaluation Metric (GEM), Ti-13X scored similarly to promising MOFs and significantly outscored pristine 13X, suggesting its merit for future investigation.

Effect of synthesis conditions on the properties of 13X zeolites for CO2 adsorption

ABSTRACT The 13X zeolites were successfully synthesized from sodium silicate and sodium aluminate via hydrothermal treatment, and applied to the adsorption of carbon dioxide (CO2). The properties of the 13X zeolites were characterized and tested by powder X-ray diffraction (XRD), N2-physisorption measurements, CO2-temperature programmed desorption (CO2-TPD) and CO2 adsorption measurements. The results demonstrate that H2O/Na2O, Na2O/SiO2, and SiO2/Al2O3 molar ratios have an important influence on the adsorption performance of CO2 because of their different physicochemical properties. The pure 13X zeolite can be obtained with the optimal H2O/Na2O, Na2O/SiO2 and SiO2/Al2O3 molar ratios of 60, 4 and 3 in the preparation process, respectively. The 13X sample prepared with suitable synthesis conditions possesses the highest crystallinity, the maximum values of specific surface area (720.8 m2/g) and pore volume (0.458 cm3/g) and moderate strength of the interaction between 13X and CO2, thus presenting the highest adsorption capacity of CO2 (118.3 mg/g).

Experimental Study on Heat Release Performance for Sorption Thermal Battery Based on Wave Analysis Method

Recent developments in water-based open sorption thermal batteries (STBs) have drawn burgeoning attention due to their advantages of high energy storage density and flexible working modes for space heating. One of the main challenges is how to improve heat release performance, e.g., longer stable heat output and effective output temperature. This paper aims to explore the heat release performance of sorption thermal batteries based on wave analysis methods. Zeolite 13X is used for the experimental investigation in terms of the relative humidity of inlet gas, system air velocity, and the length of the reactor. The results demonstrate that the optimal stable temperature output time of the sorption thermal battery experimental rig is 80 min, and heat release per unit volume reaches 115.6 MJ for the most appropriate reactor length. Thus, the optimal heat release time of the STB under the condition of various relative humidity and air velocities is 152 min and 182 min, respectively, and the corresponding stable heat release could reach 161.1 MJ and 136.5 MJ, respectively. Therefore, the heat release performance of STBs could be adjusted by adopting the wave analysis method, which would facilitate the reactor design and system arrangement.

Valorization of sponge iron industrial waste into iron-modified zeolite X for ciprofloxacin removal: a multi-parameter optimization study.

Ciprofloxacin (CIP), a commonly used antibiotic, is frequently detected in water bodies and the natural environment. The profound health consequences of CIP have led to growing attention focusing on environmental concerns. Adsorption is highly preferred because of its adaptability and remarkable efficiency in removing CIP. Therefore, the current work focuses on synthesizing an eco-friendly and economical adsorbent for removing CIP. The work aims to remove CIP using zeolite X (ZX), synthesized from dolochar, and subsequently modified ZX into iron-modified zeolite X (FeZX) via ion exchange. The synthesized FeZX had a crystallinity of 82.701%, an average pore size of 5.917 nm, a micropore volume of 0.298 cc/g, a micropore area of 451.807 m2/g, and a total surface area of 478.521 m2/g. The effect of parameters such as initial CIPconcentration, pH, contact period, adsorbent dosage, and iron dosage was analyzed in the batch adsorption studies of CIP using ZX and FeZX. CIP removal of 37.786% was achieved using ZX; hence, the adsorption parameters were optimized to maximize the CIP removal using response surface methodology (RSM), specifically Box-Behnken Design (BBD) using FeZX. Maximum removal of 97.974% was achieved under optimum conditions of 8.06 pH, contact period of 59.422 min, CIP concentration of 17.117 mg/L, and adsorbent dosage of 0.478 g/L. Freundlich isotherm and pseudo-second-order kinetic models werethe most accurate representations of the experimental data. The findings indicatethe significance of using this iron-modified mesoporous zeolite as an adsorbent for efficiently treating CIP wastewater.

Microwave drying coupled with convective air and steam for efficient dehydration of extruded zeolite honeycomb monolith

Zeolite honeycomb monoliths (ZHMs) as key adsorbents or catalysts are widely applied in industries, for which, however, the popularization is limited by its low production efficiency due to the long and careful drying process of the fragile ZHMs green body. Here we address this challenge by developing a microwave drying strategy coupled with convective air and steam. The individual microwave, microwave-air, and microwave-air-steam drying characteristics on the honeycomb and slab monoliths of 13X zeolite were systematically studied, and the drying quality-microwave power/air temperature/humidity relationship was correlated. The results showed that microwave achieves rapid dehydration of ZHMs, eliminating 29.94 % relative mass of water within only 660 s. However, the uncontrollable microwave adsorbing inhomogeneity and thermal accumulation over the hydrophilic ZHM resulted in overburning, cracking and deformation issues. Introducing convective air at room temperature eliminates overburning and cracking phenomena, and after coupled with 110 g/m3 steam, the irregular deformation of ZHMs was further mitigated (shrinkage rate reduced from 2.10 % to 1.11 %) with even increased drying efficiency by 4.47 %. The advantageous mechanism of microwave-air-steam coupling drying was revealed as the combined effect of the heat and mass transfer through the honeycomb hole enhanced by convective air and the heating and dehydration homogeneity improved by uniform microwave absorbing on surface-condensable steam. The efficacy of the optimized drying strategy was demonstrated by significantly shortened time for scale-up production of 1 m3 ZHMs from nearly 1 month to 2 days. This work affords new insights for improving production efficiency of high-quality ZHMs and presents microwave-air-steam drying process as a platform to advancing structured material preparation.

Influence of Ni-Fe load in a bimetallic catalyst supported on Zeolite 13X for CO2 methanation in a fixed bed reactor

In this work three Ni-Fe catalysts supported on zeolite 13X were tested for CO2 methanation at different temperatures. The study shows the influence of the active species load on the synthesized catalysts. In addition, the effect of Ni-Fe ratio present on the catalysts was observed.

Simulation of a zeolite thermochemical heat storage reactor: Impact assessment of isotherm model selection

Efficient modeling of thermochemical heat storage reactors is required to predict their performance in various operating conditions and optimize their design. Such modeling necessitates an accurate description of the properties of storage materials, which is still challenging to this day. This paper specifically investigates the influence of the choice of the sorption isotherm model. To this aim, the Langmuir, Dubinin-Astakhov (DA) and modified Brunauer-Emmet-Teller (BET) isotherm models are studied. The 1D model of an open fixed bed reactor based on the hydration and dehydration of zeolite 13X is presented. The model couples heat and mass transfer and uses the linear driving force approximation. Experimental investigations are also performed to characterize the sorption equilibrium of the material, its adsorption kinetics at the reactor scale and the resulting heat storage performance. The model is validated simultaneously on the basis of mass and of heat transfer measurements (i.e., breakthrough and temperature curves).The BET isotherm is shown to be the most relevant for the description of water adsorption on zeolite 13X because it considers multilayer adsorption. It fits the experimental isotherm best. At the reactor scale, the modified BET model also provides the best results, closely followed by the DA model. Still, for consistent predictions, the characterization of the chosen sorbent (i.e., the experimental data used to correlate the isotherm model or the heat of sorption) is of utmost importance and the initial water loading must be adequately specified.

Ethyl levulinate production from agricultural residue through tin oxide with grafted propylsulfonic Faujasite catalysis

A novel combination of strong Brønsted acidity (B), from propyl sulfonic acid functionalized on H–Y zeolite (HY-PrSO3H); Lewis acidity (L), by dispersion of SnO2; and confinement control showed high reactivity and selectivity in the conversion of cellulose to ethyl levulinate (EL). An optimal catalyst for EL formation was found by combining the Faujasite (FAU) structure, which incorporates strong Brønsted and Lewis acids in a B/L acidity ratio of 3.9. The resulting catalyst showed high yield of EL 63.7, 57.6 and 24.8%, from fructose, glucose, and empty palm fruit bunch (EFB), respectively. By isolating the cellulose from EFB, the yield from cellulose in EFB could be increased to 42.8% with a selectivity of 74.8%. Moreover, the catalyst could be reused up to 3 times with decreased of EL formation; and moreover, 90% of initial activity was regained after regeneration.

Zeolites and their composites as novel remediation agent for antibiotics: A review

Antibiotic residues in aquatic environments pose significant challenges when exceeding permissible limits. Zeolites, particularly aluminosilicate zeolites, have emerged as effective adsorption materials and solid substrates for semiconductor photocatalysts, facilitating the removal of antibiotics from wastewater. This review highlights the versatility of zeolites and their composites in antibiotic remediation, showcasing recent advancements in adsorption and photocatalytic degradation. Noteworthy examples include Fe (III)-modified synthetic zeolite 13X, exhibiting a maximum tetracycline adsorption capacity of approximately 200 mg/g, and MoS2@Zeolite achieving a remarkable efficiency of 396.70 mg/g for tetracycline removal. Additionally, zeolite-based photocatalysts like Fe-TiO2/BEA zeolite and exceptional CdS/CaFe2O4-clinoptilolite demonstrate high removal percentages, reaching 100% for tetracycline and 86% for cefazolin, respectively. The discussion encompasses an introduction to zeolites, including synthetic and natural zeolites, as well as techniques for modifying natural zeolites. It further delves into the production of synthetic zeolites as well as the fabrication of zeolite-based composite materials. These findings underscore the potential of zeolites and their composites as novel remediation agents for tackling antibiotic contamination in aquatic ecosystems, paving the way for sustainable wastewater treatment strategies. It highlights key elements, distinct qualities, and areas needing further research, paving the way for future studies.

Facile Synthesis of Self-Supported Solid Amine Sorbents for Direct Air Capture.

Conventional usage of tetraethylenepentamine (TEPA) via being supported on porous solid materials for carbon capture is susceptible to oxidative degradation during regeneration cycles. This study reports a novel method to synthesize a TEPA based solid polymer for efficient CO2 removal via direct air capture (DAC). The polymer was obtained through epoxy-amine crosslinking reaction, leading to the transformation of liquid TEPA to a self-supported solid polymer. The synthesis was conducted under ambient conditions via a one-pot process with no waste products, which is aligned with green synthesis. The performance of the solid amine was evaluated in DAC under realistic conditions and compared with TEPA supported on SiO2 and zeolite 13X prepared through the conventional method. The solid TEPA amine exhibited a high CO2 uptake of 6.2 wt.% comparable to the conventional counterparts. More importantly, the solid TEPA amine demonstrated high resistance to oxidation during the accelerated ageing process at 80 °C in air for 24 h, whereas the two supported TEPA samples experienced severe degradation, with zeolite 13X supported TEPA incurring a reduction of 86.5 % in CO2 capturing capacity after the ageing. This work sheds light on the novel usage of TEPA as an efficient solid amine for practical DAC operation.

Synthesis, characterization, and XPS study of woolen-like zeolite X-palladium nanoparticles: its application as a suitable catalyst for carbon-carbon coupling reaction

Here, a green methodology for synthesis of powerful catalyst of zeolite X-palladium nanoparticles (Z-X-Pd NPs) is reported. The physicochemical properties of the samples were carried out by X‐ray diffraction (XRD), X-ray photoelectron spectroscopy, Brunauer Emmett Teller and Fourier-transform infrared spectroscopy, transmission electron microscopy, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, scanning electron microscopy mapping images techniques with a clear interpretation of each analysis. From the XRD’s calculation, it can demonstrate the improvement of the crystallinity index (92.99%) and D (22.55%) values of Z-X-Pd NPs sample, compared with zeolite X (Z-X) sample. Z-X-Pd NPs not only did not have impure phases, but also a characteristic grooved-like of structures were disclosed with a good distribution of Pd NPs on the Z-X surface, confirmed by other analysis outputs. Afterward, the Suzuki-Miyaura (S-M) reaction was precisely studied by applying the desired conditions. Under the optimized conditions acid derivatives were efficiently reacted with aryl halides with their various conjugates, resulting in good yields of about 99% (particularly in aryl fluorides).

Lab-scale pilot for CO2 capture vacuum pressure swing adsorption: MIL-160(Al) vs zeolite 13X

Carbon capture is among the key technologies to quickly reduce anthropogenic CO2 emissions to a net zero emission by 2050. Among the different separation technologies, adsorption is one of the most promising. Several Vacuum and/or Pressure Swing Adsorption cycles have been developed and tested for CO2 capture using mainly zeolite 13X. Metal organic frameworks, due to their exceptional tunability, can improve the performance of adsorption processes. Nevertheless, there is a lack of experimental results for these materials at pilot scale. To address this gap, a versatile VPSA lab-scale pilot (3 columns of 1.1 L) has been developed to evaluate adsorbents at kilogram scale for CO2 capture in various adsorption process configurations. The metal organic framework MIL 160(Al), synthesized and shaped at 60 kg, was also studied on this installation and compared to zeolite 13X with a 3-bed 6-step VPSA cycle for the separation of a 15/85 %vol of CO2/N2 mixture between 0.1 and 2 bar. Results obtained reveal purity of 90 % and recovery of 92.7 % for the MIL-160(Al) while zeolite 13X only reaches 79.7 % of purity and 85 % of recovery, proving the efficiency of this material for CO2 capture. These results contradict conventional indicators and demonstrate the importance of testing a material in VPSA cycle at kg scale to fully assess its performance.

Modeling and optimization of an integrated membrane – P/VSA separation process for CO2 removal from coal plant flue gas

This work presents a mathematical framework for the simulation and optimization of an integrated membrane – Pressure/Vacuum Swing Adsorption (P/VSA) process for CO2 removal from coal plant flue gas. The integrated process includes a membrane module in the first stage and a P/VSA unit in the second stage and it is optimized to minimize energy requirement for 95% and 90% total CO2 purity and recovery, respectively. Three membrane specifications, with CO2/N2 selectivity of 75, 50 and 25, and two adsorbents, zeolite 13X and MOF UTSA-16, are examined. The configuration which includes a membrane module with a CO2/N2 selectivity of 75 followed by a P/VSA unit with a UTSA-16 adsorbent leads to a minimum energy demand of 163 kWh/tn CO2, which is lower than the energy requirements of competitive CO2 separation processes, such as a two-stage P/VSA and multi-stage membrane processes. In addition, lowering the CO2/N2 selectivity from 75 to 50, leads to a minimum energy requirement of 177 kWh/tn CO2, which is still competitive to the other CO2 capture technologies. Furthermore, a comparison between different operating temperatures demonstrates that although a higher temperature increases the total energy demand, it has no impact on the optimal operating conditions and separation efficiency.

Sorption-enhanced intensified CO2 hydrogenation via reverse water–gas shift reaction: Kinetics and modelling

Intensification of CO2 hydrogenation via the reverse water–gas shift (RWGS) reaction for CO production can be achieved through in situ removal of water when hydrophilic adsorbents are incorporated alongside the catalyst in the reaction bed. In this work, seeking to move a step closer to the industrial implementation of this innovative CO2 valorization process, a comprehensive reactor model, validated by experimental data obtained in a fixed-bed reactor, was developed to simulate the behavior of this sorption-enhanced (SE) RWGS process. Simulation and experimental data matched with good accuracy, demonstrating the striking benefits brought by the adsorbent addition, such as an almost doubling of the CO production rate at 300 °C. The kinetics of RWGS reaction over a Cu-based catalyst and H2O adsorption on a 13X zeolite adsorbent were studied both experimentally and theoretically and the kinetic models were integrated into the reactor model to assess the performance of SE-RWGS process. Fitting of the RWGS reaction rates by a Langmuir-Hinschelwood-Hougen-Watson-type heterogeneous kinetic model suggested that the rate-determining step of the reaction is the surface interaction between an adsorbed CO2 molecule and a H* species on catalytic sites of different nature. Meanwhile, the dynamic behavior of water adsorption was effectively simulated by a semi-empirical double-stretched exponential model combined with the Sips isotherm model. The results of this work could be applied to the design and scale-up of the SE-RWGS process, which offers considerable improvements over the thermodynamically constrained conventional process. The intensified approach represents a promising avenue for the effective conversion of carbon dioxide into CO, as well as into other value-added chemicals as part of a multi-stage CO2 reduction process.

Zeolites synthesis from phyllosilicates and their performance for CO2 adsorption

Five phyllosilicates (kaolinite, montmorillonite, saponite, sepiolite and palygorskite) have been selected as starting materials for the synthesis of zeolites. Among them, kaolinite and montmorillonite display the lowest Si/Al molar ratio leading to aluminosilicates with high crystallinity. Thus, the hydrothermal treatment under basic conditions forms 4A zeolite when kaolinite is used as starting material while 13X zeolite is obtained when montmorillonite is used as starting material. The microporosity and CO2-adsorption capacity of the prepared zeolites are directly related to its crystallinity. Thus, in order to improve it, raw phyllosilicates were subjected to a microwave-assisted treatment to remove undesired Mg or Fe-species, which have a negative effect in the assembling of the zeolites by hydrothermal basic conditions in a second step. The highest adsorption value was 3.85 mmol/g at 25 °C and 760 mm of Hg for Mont-A-B sample after the consecutive treatments.

Evaluation of the CH4/CO2 separation by adsorption on coconut shell activated carbon: Impact of the gas moisture on equilibrium selectivity and adsorption capacity

Upgrading biogas to biomethane is of great interest to change the energy matrix by feeding the renewable fuel produced from biomass waste into natural gas grids or directly using it to replace fossil fuels. The study aimed to assess the adsorption equilibrium of CH4, CO2, and H2O on a coconut-shell activated carbon (CAC 8X30) to provide data for further studies on its efficiency in upgrading biogas by Pressure Swing Adsorption (PSA). The adsorbent was characterized, and equilibrium parameters were estimated from monocomponent CH4, CO2, and H2O equilibrium isotherms. Binary and ternary equilibrium isotherms were simulated, and the selectivity and adsorption capacity of the CAC 8X30 were calculated in dry and wet conditions and then compared with zeolite 13X as a reference material. Regarding characterization, Nitrogen and Hydrogen Physisorption results indicated that 94 % of the pore volume is concentrated in the region of micropores. The adsorption affinity with CAC 8X30 estimated from monocomponent isotherms was in the order KH20>KCO2>KCH4. IAST-Langmuir model simulations presented good agreement with experimental binary equilibrium data. Further simulations indicated equilibrium selectivity for CO2 over CH4 (e.g., 4.7 at 1 bar and 298 K for a mixture of CH4/CO2, 60/40 vol%), which increased in the presence of moisture, indicating its suitability for upgrading humid biogas. Simulations for zeolite 13X suggested that the material is unsuitable in the presence of water vapor but presents higher selectivity than the CAC 8X30 in dry conditions. Hence, the integration of both materials might be helpful for biogas upgrading.

Geopolymers functionalised by antibacterial zeolite against biocorrosion

Aluminosilicate geopolymer with remarkable chemical and biological resistance is a promising material solution to the persistent challenge of microbial induced concrete corrosion (MICC) in sewers. In this work, novel Sor-zeolite, assembled by using microporous 13X zeolite as a host of antimicrobial ion sorbate, is incorporated into fly ash-slag geopolymer to form bio-resistant materials with long-lasting efficacy and densified microstructure. The inclusion of pure zeolite and Sor-zeolite increase the strength and refine the pore structure of geopolymer pastes owing to the seeding nuclei effects during the geopolymerisation process. The enhanced dissolution of FA and slag by the seeding effects of pure zeolite and Sor-zeolite, accelerates and enriches the precipitation of geopolymeric gels, mainly a mixture of K-A-S-H and C-A-S-H (abbreviated as K-(C)-A-S-H). The Sor-zeolite-functionalised geopolymer possesses outstanding antibacterial properties against sulphur oxidising bacteria Acidithiobacillus thiooxidans, inhibiting biofilm formation on the surface and reducing corrosion depth. The main biodegradation products of geopolymers are gypsum and silica-rich gels, resulted from decalcification and dealumination of Si–O–Al and Ca–O bonds in K-(C)-A-S-H.

Significant improvement of adsorption thermal energy storage of zeolite by simple cation exchange, inducing strong polarization of water

A series of zeolite 13X with various cations was tested as a candidate for water-adsorption-based thermal storage. In the case of pristine commercial zeolite 13X pellet, >99.9 % of cation in the zeolite is confirmed to be Na+. Via conventional cation-exchange method, the Na+ could be almost completely exchanged to Li+, K+, Cs+, Mg2+, Ca2+, and Ba2+ to the thermodynamical levels. The improvement of adsorption thermal storage requires both the increases of water adsorption capacity and heat of desorption. Thermogravimetric analysis (TGA) and Differential Scanning Calorimetry (DSC) measurements were performed for the zeolites, showing that Li+-, and Mg2+-ion form zeolite samples exhibited 26 % and 29 % higher water adsorption capacities at room temperature under fully saturation condition than pristine sample, respectively, and that especially Mg2+-ion form shows 18 % higher heat of desorption than pristine Na+-form. Although Li+-ion form shows notably high water adsorption capacity, its desorption occurs mostly at low temperature (<388 K). The increase of thermal storage as exchanging the cation to Mg2+ and Li+ was fundamentally explained by density functional theory calculation. The cations induce the strong polarization of the adsorbed water molecules, which leads to strong interactions between water molecules and an increase in the amount of water stored.

Desulfurization of Gasoline and Diesel by Fly Ash‐Derived FAU Zeolite

AbstractSulfur in fossil fuels is a major environmental and public health concern worldwide due to emissions of sulfur oxides formed during combustion. This may require new developments or upgrades of existing refining technologies. Hence, further desulfurization of gasoline and diesel to combat hazardous emissions could be a significant step toward environmental protection. In this study, adsorptive desulfurization of gasoline and diesel was achieved using a low‐cost fly ash‐derived faujasite (FAU) zeolite as complementary to the conventional hydrodesulfurization method. Sulfur levels of fuel samples, brought to the laboratory from typical fuel stations, were detected by a turbidimetric method before and after desulfurization. FAU zeolite sorbent, prepared from coal fly ash, was contacted with the fuel samples at stopped flow, and the residual fuels were analyzed to determine the sorbent's desulfurization performance. The process was optimized to enhance the sorbent's performance by varying the reaction conditions such as temperature, fuel volume, and the sorbent chemical composition. The results indicated that, at ambient temperature and pressure, the zeolitic desulfurization could reduce the sulfur content approximately by 40 % of its initial concentration, from 61 to 37 ppm and 155 to 97 ppm, in gasoline and diesel, respectively. Therefore, fly ash zeolites offer a possible opportunity for further desulfurization of refining petroleum fuels which may lead to economic and environmental gains.

Microporous Adsorbent-Based Mixed Matrix Membranes for CO2/N2 Separation

As the atmospheric carbon dioxide (CO2) concentration rapidly rises, carbon capture, utilization, and storage (CCUS) is an emerging field for climate change mitigation. Various carbon capture technologies are in development with the help of adsorbents, membranes, solvent-based systems, etc. One of the main challenges in this field is the removal of CO2 from nitrogen (N2) gas. This paper focuses on mixed matrix membrane technology, for which the CO2/N2 separation performance is based on differences in gas permeations. Membrane separation and purification technologies are widely studied for carbon capture. Microporous adsorbents such as zeolites and metal organic frameworks (MOFs) for carbon capture have been attracting researchers’ attention due to their highly porous structures, high selectivity values, and tunable porosities. Utilizing microporous adsorbents dispersed within a novel, blended polymer matrix, fourteen membranes were prepared with the commercial MOF ZIF-8, zeolite 13X, and kaolin, with methyl cellulose (MC) and polyvinyl alcohol (PVA), which were tested using a single gas permeation setup in this study. The addition of polyallylamine (PAH) as a chemisorbent was also investigated. These membranes were synthesized both with and without a polyacrylonitrile (PAN) support to compare their performances. MC was found to be an ideal polymeric matrix component to develop free-standing MMMs. At 24 °C and a relatively low feed pressure of 2.36 atm, a free-standing zeolite-13X-based membrane (MC/PAH/13X/PVA) exhibited the highest N2/CO2 selectivity of 2.8, with a very high N2 permeability of 6.9 × 107 Barrer. Upon the optimization of active layer thickness and filler weight percentages, this easily fabricated free-standing MMM made of readily available materials is a promising candidate for CO2 purification through nitrogen removal.