Toluene Adsorption Performance Research Articles

Toluene adsorption performance study of cathode air filter for high-power hydrogen fuel cell vehicles

The durability of polymer electrolyte membrane fuel cells (PEMFCs) is impacted by airborne contaminants, and it is necessary to install a cathode air filter to remove harmful pollutants. To learn more about the effect of key process variables (particle size and bulk density) on the adsorption performance of cathode air filters, the breakthrough behaviour of toluene was evaluated using activated carbon (AC) beds. The results showed that with a decrease in particle size and increase in bulk density, the initial breakthrough ratio was reduced, while the pressure drop increased. The breakthrough time increased from 18 min to 45 min with increasing particle size. In addition, kinetic modelling indicated a dominant role of pore diffusion in the whole adsorption process with an enhanced toluene uptake ratio on carbon with a smaller particle size and higher bulk density. A new evaluation index based on energy consumption was proposed, showing that a decrease in particle size will increase the energy consumption, while a change in carbon density has no obvious effect on the energy consumption. Thus, increasing the bulk density of air filters, such as by utilizing a greater number of carbon cloth filters in series, deserves our attention.

Preparation and characterization of lignin-derived nitrogen-doped hierarchical porous carbon for excellent toluene adsorption performance

Preparation and characterization of lignin-derived nitrogen-doped hierarchical porous carbon for excellent toluene adsorption performance

Precise preparation of biomass-based porous carbon with pore structure-dependent VOCs adsorption/desorption performance by bacterial pretreatment and its forming process

Pore distribution characteristic is one of the most crucial factors for porous adsorption materials, and the variety of volatile organic compounds (VOCs) approaches about how to simply and accurately tailor practical porous carbons for VOCs adsorption has gradually attracted attention. Here, precursors with different lignocellulose mass ratios have been used to produce porous carbon for model experiments to investigate the influence of the precursor lignocellulose contents on the pore structure and distribution characteristics of porous carbon, and the applicability of these mechanisms to real biomass materials has been further verified through bacteria-targeted bagasse decomposition: the microvolumes of ultra-micropores have decreased with decrease in cellulose contents, while mesopores have followed the reverse trend. The dynamic toluene adsorption/desorption performances of the obtained samples have been tested. The BACs-36 exhibits high toluene adsorption performance in low concentration with 635 mg/g while the BACs-48 shows excellent reusability in 10 times cycles. Based on this the balance between the adsorptive and regenerative capacities has been observed which indicates that carbon materials with abundant micropores and narrow mesopores have much better adsorption performance than porous carbon with a hierarchical pore structure, while the latter show better regeneration abilities than the former, which resulting in less desorption as a counter-acting force at the pore wall. Furthermore, the porous carbon has been shaped by one-step co-pyrolysis method using phenolic resin, which can not only maintain the hardness but also can avoid pore plugging phenomenon.

Study on Adsorption Performance of Fe-Modified ZIF-67 Bimetallic Organic Framework for Toluene

Volatile Organic Compounds (VOCs) are significant contributors to air pollution and play a crucial role as precursors for secondary pollutants such as O3, thereby posing severe health risks and attracting global attention. ZIF-67, a metal-organic framework (MOFs), possesses a porous microstructure and high specific surface area, offering exceptional adsorption performance, catalytic activity, and structural stability. In this investigation, a solvent-thermal method was employed to synthesize a series of Fe-modified ZIF-67 denoted as FCMx. The impact of Fe doping and temperature on the dynamic adsorption performance of toluene was examined. The results revealed satisfactory adsorption performance of FCMx when the Fe doping was 14 mol%. FCM14 achieved saturation adsorption of toluene in approximately 5000 s, exhibiting a saturated adsorption capacity of 1769.80 mg/g at 25 °C. This represented a 25% improvement in adsorption time and a 30% increase in saturated adsorption capacity compared to undoped ZIF-67. Furthermore, at a reaction temperature of 150 °C, FCM14 exhibited saturation time of approximately 4300 s and a saturated adsorption amount of 1471.43 mg/g, indicating a combined effect of chemical and physical adsorption. The findings of this research provide valuable experimental data and theoretical support for the potential industrial application of MOFs in VOC adsorption.

Nitrogen-Doped Porous Carbon from Biomass with Efficient Toluene Adsorption and Superior Catalytic Performance.

The chemical composition and surface groups of the carbon support affect the adsorption capacity of toluene. To investigate the effect of catalyst substrate on the catalytic performance, two different plant biomasses, banana peel and sugarcane peel, were used as carbon precursors to prepare porous carbon catalyst supports (Cba, Csu, respectively) by a chemical activation method. After decorating PtCo3 nanoparticles onto both carbon supports (Cba, Csu), the PtCo3-su catalyst demonstrated better catalytic performance for toluene oxidation (T100 = 237 °C) at a high space velocity of 12,000 h-1. The Csu support possessed a stronger adsorption capacity of toluene (542 mg g-1), resulting from the synergistic effect of micropore volume and nitrogen-containing functional groups, which led to the PtCo3-su catalyst exhibiting a better catalytic performance. Moreover, the PtCo3-su catalyst also showed excellent stability, good water resistance properties, and high recyclability, which can be used as a promising candidate for practical toluene catalytic combustion.

Preparation of carbon black‐based porous carbon adsorbents and study of toluene adsorption properties

AbstractBackgroundCarbon black, which has a low utilization rate, is a powdered carbon material produced by incomplete combustion or decomposition of hydrocarbons. Carbon black is used in rubber, coating and ink industries, the product quality will be affected due to its powder structure, and serious environmental pollution will be caused in the stacking process. However, carbon black used as the raw material for the preparation of porous carbon materials with high volatile organic compounds (VOCs) adsorption capacity, which can realize the resource utilization of carbon black and environmental protection.ResultsPorous carbon based adsorbents (PCBAs) were prepared by low‐temperature physical pore‐forming and high‐temperature chemical pore‐forming with waste carbon black as raw material and (NH4)2CO3 as pore‐forming agent. The high pore‐forming temperature was beneficial to the pore structure to be formed. The surface morphology of the prepared PCBAs was more wrinkled and loose, and the specific surface area, micropore ratio and graphitization degree showed a volcanic change trend with the increase of pore‐forming temperature. The micropore ratio reached the maximum (81.7%) and the graphitization degree reached the maximum (ID/IG = 1.15) at the pore‐forming temperature of 850 °C. When the pore‐forming temperature was 850 °C, the toluene saturated adsorption capacity of PCBA850 adsorbent was 298.9 mg/g. In addition, the kinetic fitting results show that the adsorption behavior of toluene molecules on the adsorbent is mainly affected by the pore diffusion.ConclusionAlthough increasing pore‐forming temperature did not change the surface chemical properties of PCBAs, high temperature pore‐forming could significantly increase the microporosity and surface area of PCBAs. The high microporous ratio and specific surface area can provide more active sites for toluene adsorption, thus improving the toluene adsorption performance of the porous carbon‐based adsorbent. In addition, the PCBA adsorbent prepared at 850 °C can restore the toluene adsorption performance at 120 °C, which provides a possibility for its practical application. © 2022 Society of Chemical Industry (SCI).

Degradation of Toluene from Gas Streams by Heterogeneous Fenton Oxidation in a Slurry Bubble Reactor with Activated Carbon-Based Catalysts.

A novel approach for the treatment of volatile organic compounds from gaseous streams was developed. In order to accomplish this, a semi-batch bubble reactor was used, aiming to assess the toluene (selected as model compound) degradation from gaseous streams via heterogeneous Fenton oxidation. Activated carbon-based catalysts—metal-free or iron-impregnated—with different textural and chemical surface properties were used for the first time as catalysts, in order to degrade gaseous toluene using such technology. Complementary characterization techniques, such as nitrogen adsorption at –196 °C, elemental analysis, pH at the point of zero charge (pHPZC), inductively coupled plasma optical emission spectrometry (ICP-OES) and transmission electron microscopy (TEM), were used. The materials’ chemical surface properties, particularly the presence of N-surface groups, were herein found to play an important role in toluene adsorption and catalytic performance. The maximum amount of toluene transferred, 6.39 × 10−3 mol, was achieved using melamine-doped activated carbon (N-doped material) that was impregnated with iron (sample herein called ACM-Fe). This iron-based catalyst was found to be quite stable during three reutilization cycles.

Low-Temperature Oxidation of Toluene over MnOx-CeO2 Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation.

Synergistic interaction derived by a heterointerface structure on the surface of metal oxide catalysts has a crucial role in improving the catalytic activity. In this work, MnOx nanoparticles were dispersed on the surface of CeO2 nanorods to generate a MnOx-CeO2 heterointerface structure, and its effect on toluene adsorption and catalytic oxidation performance was investigated. The results show that MnOx is well dispersed on CeO2 nanorods, and the interaction of Mn-Ce significantly reduces the strength of the Ce-O bond and increases the conversion of Ce4+ to Ce3+, which further promotes the activation of oxygen. Compared to MnOx on SiO2 without synergistic interaction, the enhancement of toluene adsorption on this novel MnOx-CeO2 hetero-interface structure can also make a great contribution to the improvement of the catalytic reaction process. Among them, the synergistic effect of CeO2-MnOx could reduce the temperature of 90% toluene conversion to 210 °C (this value is 83 °C lower than that over pure CeO2 nanorods). In addition, the fresh MnOx-CeO2 catalyst not only shows excellent stability and moisture resistance but also retains highly low-temperature activity even after thermal aging at 750 °C for 100 h.

Facile synthesis of Cu-BTC@biochar with controlled morphology for effective toluene adsorption at medium–high temperature

The development of adsorbents suitable for volatile organic compounds (VOCs) adsorption at medium–high temperature is urgently required for the control of VOCs in coal-fired power plant flue gas. In this study, a size-controlled broccoli-like Cu-BTC-loaded biochar composite (Cu-BTC@biochar) was synthesized with a facile one-pot method. Cu-BTC@biochar showed hierarchical pore structure features and significantly improved BET surface area (728.5 m2/g) compared with raw biochar (10.0 m2/g). The results of fixed-bed adsorption experiments show that Cu-BTC@biochar has outstanding toluene (typical components of VOCs) adsorption performance at the medium–high temperatures of 60 °C and 150 °C, the adsorption capacities can reach 501.8 and 88.8 mg/g, respectively. Molecular simulations were used to reveal the toluene adsorption mechanism and the results show that the van der Waals interaction plays an important role in the toluene adsorption process, but the electrostatic interaction of Cu-BTC@biochar has a significantly higher proportion than that of Cu-BTC (31 % vs 7 %), which is more pronounced when the temperature increases. Our findings demonstrate that this low-cost Metal-organic frameworks (MOFs) composite material presents great potential as the adsorbent for VOCs at medium–high temperature.

Green synthesis of metal-organic framework MIL-101(Cr) – An assessment by quantitative green chemistry metrics

MIL-101(Cr) is a metal–organic framework with high surface area and porosity synthesized for environmental applications, even though conventional synthesis uses toxic chemicals such as N, N-dimethylformamide (DMF) or hydrofluoric acid (HF). Therefore, we present a green evaluation of a novel synthesis that avoids adding any toxic modulator and uses waste polyethylene terephthalate (PET) as a source of the organic linker terephthalic acid (H2BDC). As a result of this strategy, MIL-101(Cr)-PET had a similar crystalline structure to conventional synthesized MIL-101(Cr)-BDC. Nitrogen gas adsorption measurements were applied to analyze textural properties; MIL-101(Cr)-PET presents a lower BET surface area (1852 m2/g) than MIL-101(Cr)-BDC (3431 m2/g). However, MIL-101(Cr)-PET exhibited similar toluene adsorption performance (42 mmol/g) than MIL-101(Cr)-BDC (40 mmol/g). A green assessment of MIL-101(Cr)-BDC synthesis using DOZN™ green chemistry evaluator revealed that the major impacts are in the Green Chemistry Principles of Prevention, Less Hazardous Chemical Synthesis, Safer Solvents and Auxiliaries, and Inherently Safer Chemistry for Accident Prevention due to the use of DMF in the activation process. Based on the environmental score, a reduction of 50 % in impacts on the 12 Green Chemistry Principles was achieved when PET was used as a source of H2BDC in addition to the elimination of nitric acid as a modulator and the use of non-toxic solvents. The outcomes of this study show that the greener synthesis of MIL-101(Cr) has the potential to become a competitive material for toluene adsorption at diluted concentrations for indoor air quality applications.

HKUST-1 infused woven cotton filter for enhanced adsorptive removal of toluene vapor from gaseous streams

The utilization of metal–organic frameworks (MOFs) has recently increased in air/gas purification, especially for the adsorptive removal of volatile organic compounds (VOCs). However, the dynamic adsorption properties of fine powdery porous MOFs (e.g., HKUST-1) tend to suffer from a number of defects, especially a significant space velocity/pressure drop upon being loaded in a packed-bed adsorbent system. To overcome such shortcomings, a new fibrous MOF-based woven fiber sorbent filter was prepared via in-situ growth of HKUST-1 crystals on woven cotton substrates (thickness ≈1mm, diameter = 4.3 cm) at five different mass ratios of infused MOFs (i.e., 2.4, 6.6, 9.5, 31.2, and 41.8 wt/wt%). The adsorption efficacy of this filtration system was studied in reference to the packed bed sorbent using 1 Pa toluene vapor at near-ambient conditions. The relative adsorption performance of toluene was accounted for by the combined effects of the content of infused HKUST-1 (e.g., 41.8 > 31.2 > 9.5 > 6.6 > 2.4 wt/wt%) and the surface availability (m2 [g∙HKUST-1]−1) (e.g., 432 < 527 < 534 < 679 < 852, respectively: e.g., in relation to the increases in surface active sites). Based on the kinetics modeling, the adsorption mechanism was controlled dominantly by physisorption phenomena that consist of surface and pore diffusion as a rate-limiting step. This research offers valuable insights into the significance of morphological features of MOFs-based filtration media when employed for air purification by adsorption technique.

Three birds with one stone: Designing a novel binder-free monolithic zeolite pellet for wet VOC gas adsorption

Zeolites are promising materials for the adsorption of volatile organic compounds (VOCs), thanks to their unique pore structure, large specific surface area, and excellent stability. However, the synthesis of monolithic zeolites with a well-defined macroscopic shape, significant mechanical strength, and high VOCs adsorption capacity in humid conditions remains challenging. Here, the synthesis of binder-free monolithic zeolite pellets, possessing robust mechanical strength, high adsorption capacity, and excellent water tolerance, is reported through a citric acid sacrifice strategy. By in situ dealuminization, Y zeolite pellets have greatly improved the specific surface area and mesopore volume, leading to superior acetone and toluene adsorption performance. Moreover, the extracted aluminum species produced during the dealuminization act as a “bridge” to promote the zeolite particles into pelletization with a sufficiently high mechanical strength. Under 90% relative humidity, the acetone and toluene adsorption capacity of the synthesized zeolite pellets reach above 90% of the adsorption capacity under dry conditions, showing potential in practical industrial application. It is anticipated that this synthetic strategy will benefit the forming and development of monolithic zeolite.

Effects of several additives on silica aerogel properties and adsorption performance for n-hexane, carbon tetrachloride and toluene

In this work, hydrophobic and monolithic silica aerogels were prepared at ambient pressure by using β-cyclodextrin, cetyltrimethylammonium bromide and ethylene glycol as additive. The aerogels were characterized and used for adsorption of n-hexane, carbon tetrachloride and toluene. These additives have different effects on the morphology and specific surface area of silica aerogels. Compared to cetyltrimethylammonium bromide and ethylene glycol, introducing β-cyclodextrin into silica aerogel could increase adsorption capacity for of n-hexane, carbon tetrachloride and toluene more effectively.

Adsorption of acetone and toluene by N-functionalized porous carbon derived from ZIF-8

In this study, a N-functionalized porous carbon derived from ZIF-8 (NFPC) was prepared and applied for the gaseous acetone and toluene adsorption removal. The NFPC perfectly inherited the morphology of parent ZIF-8, posed a high specific surface area (SBET = 1228 m2·g−1), be rich in surface nitrogen functional groups, and resulting in a good dynamic adsorption of the VOCs. The NFPC-1000 exhibited the best adsorption performance of low concentration acetone and toluene, with equilibrium adsorption capacity of 203.4 and 297.1 mg·g−1 at 25 °C respectively. The acetone and toluene adsorption were spontaneously and exothermic, given the negative values of free energy (ΔG) and enthalpy (ΔH). The difference of acetone and toluene adsorption on NFPC attributed to the affinity difference (boiling point, polarity and molecular diameter), the nitrogen-containing functional groups (pyridinic-N) and the cation-π bonding. Therefore, the NFPC was found to be more favorable for aromatic compounds adsorption, the toluene adsorption of NFPC-1000 only decreased 5.3% after 6 cycles reuse, while its adsorption capacity of acetone lost more than 60%.

Mechanistic insights into ball milling enhanced montmorillonite modification with tetramethylammonium for adsorption of gaseous toluene

Montmorillonite is widely used for pollutants adsorption due to its porous structure and low price. However, the low specific surface area and small porosity limit its application in gas adsorption field. In this study, montmorillonite was organically modified using a facile dry ball milling method by tetramethylammonium bromide. The adsorption behaviour of toluene as a model VOC compound on organic montmorillonite was systematically investigated through adsorption breakthrough curves, adsorption kinetics and isotherms. After modification by ball milling, the specific surface area of ball milling with tetramethylammonium bromide for montmorillonite modification (BMTMt) was increased from 20.6 m2/g to 186.4 m2/g, and the microporosity proportion was up to 47%. Dynamic adsorption experiments showed that the best performance of BMTMt for toluene (55.9 mg/g) was 6 times higher than that of original montmorillonite (8.8 mg/g). Compared with the water bath preparation method, ball milling method promoted the intercalation of tetramethylammonium bromide into the layers of montmorillonite, resulting in a higher proportion of micropores. Density functional theory calculations indicated that the interaction between tetramethylammonium bromide and montmorillonite was mainly electrostatic forces, and the enhanced adsorption performance for toluene was mainly through microporous filling. BMTMt was proved to be a promising adsorbent for VOCs removal.

Hierarchical porous activated carbon from wasteZanthoxylum bungeanum branches by modified H3PO4 activation for toluene removal in air.

Activated carbon adsorbents were prepared by chemical activation with waste Zanthoxylum bungeanum branches as raw materials and H3PO4/H2SO4 as composite activator under different dosages of the auxiliary activator H2SO4. The prepared samples were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) specific surface area test, Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The adsorption/desorption performances of low concentration toluene in the air were evaluated, and its reusability was evaluated by the adsorption/desorption cycle. Adsorption results were fitted using the quasi-first, quasi-second, and Bangham models. The adsorption properties of activated carbon adsorbent for toluene in the air show a "volcanic-type change trend" with the increase of H2SO4 dosage. The toluene adsorption properties of the prepared activated carbon adsorbents from high to low are as follows: BAC02 > BAC05 > BAC01 > BAC10 > BAC00. When the mass fraction of auxiliary activator H2SO4 was 2.0%, the adsorption amount of toluene on the prepared BAC02 activated carbon adsorbent increased by 51%, reaching 511mg/g. After thermal desorption at 200℃, the adsorption performance of toluene was regenerated. The adsorption process of toluene conforms to the quasi-first-order model and Bangham model. The whole adsorption process can be divided into three stages: outer surface adsorption, intra-channel diffusion, and adsorption equilibrium. The addition amount of H2SO4 significantly affected the specific surface area, pore volume, and pore size distribution of the prepared activated carbon adsorbent.

Constructing novel hyper-crosslinked conjugated polymers through molecular expansion for enhanced gas adsorption performance

The porous organic polymers have been considered as effective materials for gas storage and adsorption. Herein, we synthesized highly crystalline nitrogen-rich covalent triazine frameworks (CTFs) by polycondensation for preparing the novel hyper-cross-linked conjugated polymers (HCCPs) with tunable specific surface area and pore volume through coupling Friedel-Crafts reaction, in which 1,4-Bis(chloromethyl)benzene and 4,4-Bis(chloromethyl)biphenyl as the expansion molecules were pillared between the layers of CTF-HUST. This technology not only increased the specific surface area and total pore volume of CTF-HUST by 2.56 and 4.68 times, but also greatly enhanced the utilization of adsorption sites of CTF-HUST. The HCCP2–1.25 exhibited the highest surface area (1349.29 m2g−1) among these HCCPs and demonstrated excellent adsorption performance for ethyl acetate (1605.14 mg/g), ethanol (1371.49 mg/g), 1,2-Dichloroethane (1971.68 mg/g), benzene (1151.77 mg/g) and toluene (1024.28 mg/g) due to the multiple C-H…O, C-H…Cl, O-H…N and C-H…π interactions between volatile organic compounds (VOCs) and HCCPs framework. Moreover, CO2 and H2 storage capacities of the HCCP2–1.25 were 8.02 wt% and 1.54 wt%, 1.66 and 1.67 times higher than CTF-HUST, respectively. This study developed a simple and effective molecular expansion strategy to synthesize a series of novel high-surface-area porous polymers for potential applications in the environmental field.

MOF-derived 3D porous carbon aerogels as an efficient adsorbent for toluene in humid air

Due to the ecological and health hazards of volatile organic compounds (VOCs), the removal of industrial VOCs has become an important issue of increasing concern. In this work, we synthesized easy-processing ZIF-8/agarose composite porous carbon aerogels and investigated their toluene adsorption performance. Results indicated that carbon aerogels had large specific surface area, uniform microporous structure and high nitrogen content. The toluene adsorption capacity of carbon aerogel was 511.2 mg/g under RH50%, which was higher than that of commercial adsorbents and other MOFs with the same specific surface area. The adsorption mechanism of carbon aerogels was further studied via DFT method and was determined as pore-filling effect, π-π interaction and electron donor/acceptor interaction. In addition, carbon aerogels also showed high efficiency and recyclability which kept 70% adsorption capacity at ambient humidity and successfully regenerated after three cycles without obvious loss of adsorption capacity. Therefore, the high adsorption capacity and recyclability facilitate the synthesized aerogels become a promising adsorbent in VOCs adsorption field.

Hydrophobic modification of UiO-66 by naphthyl ligand substitution for efficient toluene adsorption in a humid environment

Adsorption method has been proved an effective method to remove low-concentration volatile organic compounds (VOCs) from the flue gas, however, it is challenged by the rapid deficiency of adsorption capacity under humid environment, due to the collapse of pore structure or more inclined adsorption for water than low-polarity VOCs such as BTEX. Therefore, developing adsorbents with high hydrothermal stability and hydrophobicity is urgently needed and very important. The outstanding chemical, thermal and structural stability enable UiO-66 a promising adsorbent candidate, however, hydrophobic modification is required to an obtain high adsorption capacity of BTEX in the humid flue gas. In this work, non-polar functional groups naphthyl groups were introduced into UiO-66 to increase hydrophobicity, so that the materials maintain stability and high adsorption efficiency in humid environments. UiO-66-NDC(X = 25,50,100) was synthesized by using 1,4-naphthalenedicarboxlic acid to substitute X percent terephthalic acid in a solvothermal process. Dynamic adsorption experiments were carried out to test the adsorption performance of toluene on UiO-66 and UiO-66-NDC(X). Compared with the pristine UiO-66, the modified adsorbent present improved adsorption capacity in varied humidity, especially, UiO-66-NDC (50) presents the highest toluene adsorption capacity at a relative humidity (RH) of 50%, increased by 69% compared with pristine UiO-66. Furthermore, the modified samples exhibited an excellent recyclability performance, which maintains a higher toluene adsorption capacity after five cycles, indicating that UiO-66-NDC (X) is an effective and regenerative adsorbent in humid environments. Mechanism diagram of UiO-66-NDC(X) adsorption of toluene in humid air. • UiO-66-NDC(X) was successfully synthesized with mixed organic ligands. • The non-polar group naphthyl group was successfully introduced into UiO-66. • UiO-66-NDC(X) shows excellent volatile organic compound adsorption performance in humid environments. • UiO-66-NDC(X) exhibited an excellent recyclability performance.

Synthesis and formation mechanism analysis of meso‐microporous ZSM‐5 with controllable mesoporous volume

AbstractBACKGROUNDZSM‐5 molecular sieve has an important application value in industrial adsorption. Due to the existence of micropores, it is hard for larger molecules to enter the ZSM‐5 molecular sieve. Meso‐microporous MFI zeolite was prepared by hydrothermal crystallization regarding the organosilane as the structure‐directing agent. Then the samples were characterized by X‐ray diffraction, infrared spectroscopy and so on. The effect of organosilane on mesoporous volume and the mechanism of mesoporous formation were further investigated. Finally the performance of adsorption for volatile organic compounds (VOCs) on meso‐microporous ZSM‐5 were analyzed by static adsorption and dynamic adsorption experiments.RESULTSThe meso‐microporous ZSM‐5, which were prepared with the organosilanes, contained not only large and uniform mesopores but also certain amounts of micropores. The results of N2 physisorption showed that the meso‐microporous ZSM‐5 obtained by propyl trimethoxy silane had the highest specific surface area (438.19 m2 g−1) and mesoporous volume (0.15 cm3 g−1). When the molar ratio of SiO2: octyl trimethoxy silane was 1: 0.1, the specific surface area (508.03 m2 g−1) and mesoporous volume (0.23 cm3 g−1) of the O‐ZSM‐5 were maximum. Compared with traditional ZSM‐5, the toluene adsorption performance of meso‐microporous ZSM‐5 had been effectively improved.CONCLUSIONThis research focused on offering the simple and high efficiency meso‐ microporous ZSM‐5 synthetic routes. The newly intercrystalline mesoporosity in ZSM‐5 zeolite showed a controllable mesoporous channel, which was better than traditional ZSM‐5. The prepared molecular sieve was a promising adsorption material for the volatile organic compounds. © 2021 Society of Chemical Industry (SCI).