Granular Catalyst Research Articles

Field study on PCDD/F decomposition over VOx/TiO2 catalyst under low-temperature: Mechanism and kinetics analysis

One commercial granular catalyst was investigated, including catalysts characteristics, removal efficiencies (RE) and mechanism of polychlorinated-ρ-dibenzodioxins and dibenzofurans (PCDD/F) and NOx, kinetics analysis of PCDD/F. The high surface area (96.77 m2/g), the dominative species of V5+ (74.79%), and good redox ability and anatase-TiO2 provided the advantages on catalysis of PCDD/F. The RE of PCDD/F were high and followed 94.59% for total PCDD/F (95.43% for toxic PCDD/F)＞90.57% (91.74%)＞87.48% (84.98%), with decreasing operating temperature of SCR (200 ℃, 180 ℃ and 160 ℃, respectively), which were closely associated with the decreasing catalytic reaction rate (k). While the RE of NOx was generally low and decreased from 67.51% to 45.03% and 42.74%, respectively. The catalyst better favors the PCDF removal in higher operating temperature (200 ℃, 180 ℃) but PCDD removal in lower temperature (160 ℃). Kinetics analysis revealed the k of most PCDD/Fs generally decreased with the decreasing operating temperature, and the correlation coefficient (R2) with the k of PCDD, PCDF and PCDD/F were 0.91, 0.99 and 0.97, respectively. The apparent activation energy (Ea) of PCDD/F was 14.40 kJ/mol, and the Ea of PCDD (11.26 kJ/mol) was lower than that of PCDF (17.11 kJ/mol).

Double-layered catalytic wall-plate microreactor for process intensification of dry reforming of methane: Reaction activity improvement and coking suppression

Based on thermodynamic equilibrium, we speculated that a reactor with high heat transfer and lower pressure loss would be effective for suppressing coking. Thus, a double-layer catalytic wall-plate microreactor (DL-CWPMR) with a baffled channel is proposed herein. In the dry reforming of methane (CH4/CO2 = 1/1, GHSV = 36,000 mlSTP‧(gcat.‧h)‒1), the CH4 conversion was improved to nearly equilibrium at 500–800 °C using DL-CWPMR with a baffle. Moreover, compared to the tubing micropacked bed reactor, the temperature gradient due to the endothermic reaction was obviously reduced, where the operating temperature was lowered by 50 K to afford 90 % methane conversion. The coking level attained a maximum at 650 °C, and its value was lower for the DL-CWPMR with a baffled channel. These two effects are due to the excellent heat transfer properties of CWPMR. DL-CWPMR can be loaded with any granular catalyst. The authors developed a DL-CWPMR with a high overall catalyst loading capacity compared to that of catalyst-coated plate reactors.

Impacts of preparation method on catalytic properties and activity of Shell@Core structure of CuO@ZrO2/FeMgAl-LDO catalyst for ethanol dehydrogenation

Core-shell particles is a type of materials that consist of an inner core structure and an outer shell made from different components. They have been employed as a catalyst due to their unique properties, arising from the combination of the core and shell materials. In addtion, the properties of the core-shell particles can be designed using several suface modification techniques in order to improve the activity and stability of the catalyst. Chemical grafting is a surface modification method that involves the reaction between a metal alkoxide precursor and the surface hydroxyl group of a support. This technique has been reported to be one of the most interesting surface modification techniques that provide a well-dispersed metal oxide on the surface of a support. Micro-emulsion is also considered as one of the simplest and effective methods for the preparation of nano-sized particles with a narrow size distribution, which can be immobilized on the surface of a support. In this work, the impact of preparation methods on the physical and chemical properties of the CuO@ZrO 2 /FeMgAl-LDO shell@core catalyst and 1,3-butadiene production were investigated. The catalyst samples were characterized using several techniques, including XRD, XRF, BET, NH 3 -TPD, CO 2 -TPD, TEM-EDX, and SEM-EDX. The activity of catalyst samples on ethanol conversion was performed in a continuous U-tube fixed-bed reactor at 400 ​°C and atmospheric pressure. It was found that the conversion of ethanol to 1,3-butadiene was a surface sensitive reaction. Therefore, the specific catalyst preparation method was required in order to achieve a high 1,3-butadiene yield. Particularly, in this case, the catalyst that provided the highest yield of 1,3-butadiene was in the form of ZrO 2 -grafted granular catalyst (CuO@gf-ZrO 2 /g-FeMgAl-LDO one). Based on the characterization results, the grafted granular core-shell catalyst was the one that had the highest ratio of total base/acid sites. • Impact of preparation methods on the properties of shell@core catalyst and 1,3-butadiene production. • Core-shell catalysts with a CuO shell and grafted and micro-emulsioned ZrO 2 /powder and granule FeMgAl-LDO cores. • It was found that transformation of ethanol to 1,3-butadiene was a surface sensitive reaction. • A specific catalyst preparation method was required in order to achieve a high 1,3-butadiene yield. • The catalyst with grafted granular core provided the highest 1,3-butadiene yield, owing to the highest base/acid ratio.

РЕШЕНИЕ ЗАДАЧИ В РАБОЧЕЙ ЗОНЕ. ЧИСЛЕННЫЙ РАСЧЕТ МОДЕЛИ НИЖНЕКАМСКОГО РЕАКТОРА ДЛЯ ПОЛУЧЕНИЯ СТИРОЛА (ЧАСТЬ 3)

Heterogeneous catalytic processes conducted in axial or radial type reactors with a still catalytic layer are some of the most important elements of the chemical technology. The attention of scientists and manufacturers to the investigation and application of these contact units deals with the following advantages: a highly developed surface of a phase separation, a possibility to provide a high flow velocity and hence to decrease sizes and a material consumption, a construction simplicity and a reliability of an exploit. Improving an operation of contact units may be achieved by refining present technologies, catalysts, disperse system structures and by creating new ones. Nevertheless, in some cases large scale hydrodynamic heterogeneities in a working zone of the unit cancel out efforts to increase an efficiency of chemical, heat/mass transfer and other processes. The exploration of reasons of the hydrodynamic heterogeneities formation requires an investigation of liquid and gas motion physics features in granular layers. A practice of a chemical reactors exploitation reveals that technical and economical indicators of an industrial process are as a rule lower than the calculated ones, derived on a stage of the process design. Now it can be considered proven that one of the reasons affecting the reactor output is the heterogeneity of a reagents flow in a granular catalyst layer. The article deals with a mathematical modeling of an incompressible liquid flow in flat and radial contact units with the still granular layer and a creation of numerical realization methods for the model We propose a cycle of articles dealt with a model of a real reactor that consists of three parts: a distributing manifold, a collecting manifold and a working zone, where the still layer of a granular catalyst is loaded. An input and an output are made with a Z-shaped scheme. We consider processes and their equations in each reactor zone in detail.

Electrocatalytic dechlorination of 2,4-DCBA using CTAB functionalized Pd/GAC movable granular catalyst: Role of adsorption in catalysis

The CTAB-Pd/GAC catalyst was obtained by functionalizing palladium/granular activated carbon (Pd/GAC) with cetyltrimethylammonium bromide (CTAB), which was used for the electrocatalytic reductive dechlorination of 2,4-dichlorobenzoic acid (2,4-DCBA). The degradation rate of 2,4-DCBA by 40 mg g−1 CTAB-Pd/GAC was 9.8 × 10−3 (min−1 g−1 Pd), which was 11 folds than that by Pd/GAC (0.9 × 10−3 min−1 g−1 Pd), and the value of qe, 2,4-DCBA/qe, BA was 2.33 as compared to 0.67 for Pd/GAC. The combined result of dechlorination and adsorption experiments suggested that the functionalization by CTAB would enhance the 2,4-DCBA concentration on the surface of CTAB-Pd/GAC, and accelerate the degradation rate. However, the removal efficiency of 2,4-DCBA would decrease when the CTAB load reached 80 mg g−1, due to the excessive adsorption capacity for dechlorinated product. Density functional theory (DFT) calculations also proved that CTAB would increase adsorption capacity of catalyst and selective adsorption behavior of 2,4-DCBA, which accelerated the degradation rate of 2,4-DCBA.

Simultaneous removal of NOx and chlorobenzene on V2O5/TiO2 granular catalyst: Kinetic study and performance prediction

The synergetic abatement of multi-pollutants is one of the development trends of flue gas pollution control technology, which is still in the initial stage and facing many challenges. We developed a V2O5/TiO2 granular catalyst and established the kinetic model for the simultaneous removal of NO and chlorobenzene (i.e., an important precursor of dioxins). The granular catalyst synthesized using vanadyl acetylacetonate precursor showed good synergistic catalytic performance and stability. Although the SCR reaction of NO and the oxidation reaction of chlorobenzene mutually inhibited, the reaction order of each reaction was not considerably affected, and the pseudo-first-order reaction kinetics was still followed. The performance prediction of this work is of much value to the understanding and reasonable design of a catalytic system for multi-pollutants (i.e., NO and dioxins) emission control.

Electromagnetic induction effect induced high-efficiency hot charge generation and transfer in Pd-tipped Au nanorods to boost plasmon-enhanced formic acid dehydrogenation

Improving the photo-induced hot charge utilization rate in granular catalysts with specific nanostructure is hindered by limited hot electron production and rapid recombination in plasmonic metal particles; therefore, promoting photo-induced hot charge generation and transfer during the plasmonic process is a vital approach for enhancing plasmonic catalytic performance. In this work, with the intention of constructing Pd-tipped Au nanorod heterostructures to achieve plasmon-enhanced formic acid dehydrogenation, the magnetic-field-derived electromagnetic induction effect is utilized to further boost the generation and transfer of plasmonic hot charges in Au nanorods. By exposing the plasmonic catalytic system to a rotating permanent magnet at 28 °C, formic acid dehydrogenation efficiency was improved by approximately 60%. The improvement rate in the same system can exceed 150% at 45 °C. This enhancement is attributed to the increase in plasmonic hot charges and the suppression of charge recombination based on the electromagnetic induction effect of plasmonic Au nanorods in a rotating magnetic field. This work provides a practical strategy for designing high-activity catalysts regulated via magnetic field for formic acid dehydrogenation. • The magnetic-field is utilized to further boost the plasmonic hot charge generation and transfer from Au nanorods to Pd. • The formic acid dehydrogenation efficiency were improved 60% and 150% at 28 °C and 45 °C in rotatingmagnetic field. • The increase in plasmonic hot charges and the suppression of charge recombination by the electromagnetic induction effect.

Catalytic self-activation of Ca-doped coconut shell for in-situ synthesis of hierarchical porous carbon supported CaO transesterification catalyst

This study reports a one-step facile synthesis of a novel heterogeneous granule base catalyst, dubbed CaO/AC that contains small calcium oxide (CaO) nanoparticles embedded within hierarchical activated carbon (AC). The CaO/AC hybrid exhibited a 98.59 wt% fatty acid methyl esters yield, with 89.75% less catalyst compared to pristine CaO. In addition, the CaO/AC granular catalyst, which was easily recovered without any post-treatment, presented sustainable catalytic activity after two cycles of transesterification. The calcium cations penetrated into the cell wall of coconut shell by vacuum impregnation, and the carbonization of cell wall suppressed the agglomeration of calcium compound, which was essential for the catalytic self-activation of Ca-doped coconut shell. The pyrolysis atmosphere and dwelling time were investigated to demonstrate the dual function of calcium. Owing to the catalytic effect of Ca during the self-activation process, the hierarchical activated carbon with improved mesopores was manufactured. On the other hand, CaO nanoparticles with an average size of 14.7 nm were in-situ encapsulated within the mesopores of hierarchical carbon matrices. The additional formation of mesopores and high dispersion of CaO nanoparticles were responsible for the enhanced inner mass transfer and the number of accessible alkaline sites in transesterification of triglycerides, leading to the high catalytic activity and stability of CaO/AC.

Apparatus for Producing Elemental Sulfur from Highly Concentrated Hydrogen Sulfide-Containing Gases

A device is proposed for producing sulfur, in the form of a cylindrical reactor with several catalyst blocks consisting of heat exchange elements with an internal space for the passage of the coolant; the space between the elements is filled with a granular catalyst. The device additionally contains a steam heater for hydrogen sulfide-containing gas, a section for condensing sulfur vapors (surface condenser located below the catalyst units), and a thermosyphon device for removing reaction heat from the catalyst blocks. In this case, the catalyst units are equipped with devices for distribution of oxygen-containing gas over the cross section of the apparatus. The thermosyphon device is composed of a manifold distributor of the liquid heat carrier, a manifold-collector of the vapor-liquid mixture, and a separation space, which houses a steam heater of the hydrogen sulfide-containing gas. When highly concentrated hydrogen sulfide is oxidized (up to 90 vol. %) on the experimental apparatus, the sulfur removal is 4.0–4.1 kg/hr for every 1 liter of catalyst, the sulfur yield is 99.6% and a high-potential vapor is obtained (250°C, 4.0 MPa).

Ammonia Combustion Properties of Copper Oxides-based Honeycomb and Granular Catalysts

Ammonia Combustion Properties of Copper Oxides-based Honeycomb and Granular Catalysts

Spherical montmorillonite-supported molybdenum disulfide nanosheets as a self-sedimentary catalyst for organic pollutants removal

Water containing organic and carcinogenic pollutants has become a serious environmental problem, threatening the life of the aquatic ecosystem and human beings. Molybdenum disulfide (MoS2), especially monolayered MoS2 sheets, has been proven as an effective catalyst for degradation of organic contaminants due to its more exposed edges and active sites for electron transfer. However, monolayered MoS2 nanosheets easily aggregate due to their high surface energy and strong π-π electron interaction, heavily affecting the catalytic performances. In addition, monolayered MoS2 nanosheets with small tiny size are difficult to recover from the mixture, restricting the capacity of recyclability and further mass application. Herein, we solved these issues via supporting the small tiny MoS2 nanosheets on spherical montmorillonite (SMt). The SMt can not only provide large pore volume and specific surface area for supporting abundant MoS2 but also reduce the fouling and enhance the transport during the mass production process. The prepared microspheres exhibited a high catalytic activity towards organic pollutants including methylene blue (MB) and 4-nitrophenol (4-NP) in the presence of NaBH4 due to the strong adsorption capacity of SMt and the large catalytic surface area for electron transfer. Furthermore, the micro-sized granular catalyst can be facile recovered and reused without any devices involved due to the excellent self-sedimentary capacity and large size. Moreover, the catalytic performance and the morphology were almost unaltered after recycling 20 times. Our straightforward strategy to solve the issues through porous micro-sized self-sedimentary SMt supporting tiny monolayered MoS2 nanosheet with high catalytic activity facilitates the practical application of these kinds of catalyst towards the reduction of organic and carcinogenic pollutants.

Flue gas purification from NO using supported Cu–Mn and Cu–Mn–Nb catalysts synthesized by electroless metal deposition method

In the present work, granular fixed-bed catalysts with active Cu–Mn and Cu–Mn–Nb layers synthesized by electroless metal deposition method were prepared and tested for purification of a flue gas from nitrogen monoxide (NO) by CO. Lightweight expanded clay aggregate with i.d. of 2–4 mm and 8–10 mm was used as a substrate for deposition of the active layer. Elemental composition of the prepared catalytic layers was determined by means of inductively coupled plasma optical emission spectroscopy and energy-dispersive X-ray analysis. Field emission scanning electron microscopy and X-ray photoelectron spectroscopy were applied to investigate morphology of the active layers and the oxidation state of the main components (Mn, Cu and Nb), respectively. Additionally, X-ray diffraction analysis and energy-dispersive X-ray mapping were conducted to provide comprehensive information about the structure and dispersion of active components on the surface of the catalysts prepared. It was demonstrated that electroless metal deposition method allows preparation of a relatively uniform active layer with highly distributed active sites on the substrate surface, while the Cu0.012–Mn0.986Nb0.0012 active layer synthesized by electroless metal deposition can be successfully applied for selective catalytic reduction of NO with the use of CO as a reductant. The effective NO conversion (90–95%) was observed at temperatures of 300–400 °C and higher. X-ray photoelectron spectroscopy revealed that significant amount of Mn3+ and Mn4+ species and predominance of chemisorbed oxygen over the lattice oxygen should be responsible for NO conversion efficiency of the catalyst prepared.

Design and operation of a pilot plant for syngas to low-aromatic gasoline via DME

Pilot tests of a syngas-to-gasoline (STG) technology for the synthesis of liquid hydrocarbons through oxygenates (methanol and dimethyl ether (DME)) for different process flow diagrams were carried out were carried out. The resulting product was light synthetic oil with a low concentration of aromatic compounds (8–16 wt %). The results of the pilot run were analyzed and compared with the results of tests performed on a small micropilot unit. It was shown, that in the absence of a kinetic description of the reaction, the space time and dimensionless criteria for heat and mass transfer modeling in a granular catalyst bed can be used as reference parameters. It was found that the scale-up had no effect on the selectivity for product formation.

Development of (γ-Al2O3-Zeolite Y)/α-Al2O3-HPCM Catalyst based on Highly Porous α-Al2O3-HPCM Support for Decreasing Oil Viscosity

Highly porous cellular material (α-Al2O3-HPCM) support was synthesized by the template method. Highly porous support was used for the synthesis of the catalyst. A thin secondary layer with 25–30 μ thick γ-Al2O3 and zeolite Y was applied on the α-Al2O3-HPCM surface ((γ-Al2O3 (85%)-zeolite Y (15%))/α-Al2O3-HPCM). The catalyst based on the highly porous support was tested in a process of decreasing oil viscosity. The catalyst in the form of cylindrical granules and a thermal process of decreasing oil viscosity without the catalyst were used as the basis for comparison. α-Al2O3-HPCM in the catalyst provides low-quantity pores (d < 10 nm) and a quantity of general acid centers compared with the granular catalyst. On the other hand, it shows a more significant oil viscosity decrease (from 2500 to 41 cPs) and a low rate of gas generation (137 mL/h) for the catalyst with highly porous support. A high oil fraction was observed in the presence of the (γ-Al2O3-zeolite Y)/α-Al2O3-HPCM compared to the granular catalyst. The presence of large transport cells (pores) 1500–2000 μ for the catalyst based on highly porous support allowed a work period four times longer than that of experiment only with temperature without catalysts.

Combined adsorption and catalytic oxidation for low-temperature toluene removal using nano-sized noble metal supported on ceria-granular carbon

New and granular catalysts, which can be used directly for fixed-bed catalytic reactors, have been prepared, characterized and tested for low-temperature removal of toluene, typical and difficult-to-treat volatile organic compounds (VOCs). These dual functional materials performed both adsorption (by carbon) and catalytic oxidation (by nano-metallic particles). Using the metal-sol method, nano-sized particles of noble metal (Au, Pd, and Au-Pd) were successfully dispersed on ceria/granular carbon support. The textural properties of these ready-to-practically use catalysts were characterized to confirm the presence of nano-sized noble metal on the ceria/granular carbon. The size of the noble metal particles was significantly reduced to less than 5 nm when both Au and Pd were presented. Due to the synergistic adsorption-catalysis, the catalysts showed high catalytic performance for toluene removal in the temperature range of 100 °C–200 °C even at high humidity and low toluene concentration. Even at low toluene concentration of 314 ppmv and with a relative humidity of 60 %, about 90 % of toluene can be stably removed by the nano 0.5 %Au-0.27 %Pd/CeO2/GC at 175 °C and GHSV of 30,600 h-1. Particularly, the analysis of kinetics for the catalytic oxidation of nano-sized 0.5 %Au-0.27 %Pd/CeO2/GC catalyst from 45-set of experiments showed that the Mars-van Krevelen mechanism provided a good agreement towards the experimental data and allowed to measure the kinetic parameters of the reaction-rate law (-rT=k1.k2.CT.CO2γ.k2. CT+k1.CO2). The activation energy for reoxidation, the oxidation of toluene by lattice oxygen on the catalyst was reported.

Biomass-based composite catalysts for catalytic wet peroxide oxidation of bisphenol A: Preparation and characterization studies

The wet granulation process was used to prepare new, efficient, and cost-effective granular biomass-based composite catalysts for catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA). The most stable composite granules was prepared by mixing biomass-based carbon residue (CR) with metakaolin (MK) combined with calcium oxide (CaO) or cement and a solvent (NaOH or KOH). For all the prepared composite granules, the optimized binding agents to carbon ratio was 0.3, the solvent to carbon ratio 1.2, and the agitation rate 1200 rpm. The specific surface area of the prepared catalysts was 152–205 m2/g. The composite granular catalyst (CR + MK + CaO + NaOH) had the most durable and stable structure (compressive strength of 27 N) and the most basic surface (15 mmol/g) measured with temperature programmed desorption. This catalyst was the most active in CWPO of BPA and total organic carbon removal of 50% and 48%, respectively.

Preparation of Purified Hydrogen by Selective Hydrogenation of Carbon Monoxide in a Mixture of Steam Reforming Products of Organic Substrates Using a Membrane Catalytic Reactor

The scientific basis has been developed for the production of purified hydrogen via the hydrogenation of CO formed by the steam reforming of fermentation products in a porous Ni(Al)–Co converter made by self-propagating high-temperature synthesis. It has been shown that the rate of CO hydrogenation in catalytic channels of the converter is higher by a factor of 3–3.5 than the rate achieved in a flow reactor with a fixed bed of a granular catalyst of the same composition. If the steam reforming processes with an H2O/organic substrate ratio of ~15–20 are self-consistent with the subsequent hydrogenation of carbon monoxide by the “intrinsic” hydrogen, the carbon monoxide conversion per pass at 300°C is 97.5% with a residual CO content in the gas of ≤0.1%. The approach considered in the paper is promising for producing hydrogen as a fuel for medium-temperature fuel cells.

Catalytic combustion of isopropanol over Co-ZSM-5 zeolite membrane catalysts in structured fixed-bed reactor.

Catalytic combustion of isopropanol in the structured fixed-bed reactor was investigated over Co–ZSM-5 zeolite membrane catalysts. Firstly, ZSM-5 zeolite membrane catalysts with different Si/Al ratios were coated onto the surface of stainless steel fibres via secondary growth method and wet lay-up paper-making method. Then, cobalt oxides were loaded onto the zeolite membranes by impregnation method. The performance of catalytic combustion of isopropanol was conducted over the prepared zeolite membrane catalysts, and the experimental results showed that the catalyst with infinite Si/Al ratio has the highest catalytic activity for the combustion with the lowest T90 of isopropanol (285°C). Finally, the effects of bed structure, feed concentration, gas hourly space velocity and reaction temperature on the catalytic performance were investigated to analyse the kinetics of isopropanol over the catalyst with infinite Si/Al ratio in the structured fixed-bed reactor. The results showed that the longer residence time could cause higher reaction contact efficiency of isopropanol combustion. T90 of isopropanol can be dramatically decreased by 105°C in the fixed-bed reactor packed with Co–ZSM-5 zeolite membrane catalysts, compared to the fixed-bed reactor packed with granular catalyst.

A novel nickel-based structured catalyst for CO2 methanation: A honeycomb-type Ni/CeO2 catalyst to transform greenhouse gas into useful resources

The purpose of this study is to construct a honeycomb-type structured catalyst with a high methanation performance to effectively transform CO2 to CH4. To select the best methanation component for structuring, a 10wt% Ni-loaded granular catalyst was prepared by evaporation to dryness using Al2O3, TiO2, ZrO2, Y2O3, MgO and CeO2 as the support materials. The granular Ni/CeO2 catalyst displayed the highest activity at 200–500°C, while the granular Ni/Al2O3, Ni/MgO and Ni/TiO2 catalysts showed low CO2 conversions. The variable affecting the Ni/CeO2 catalyst having a high performance would be related to the large amount of adsorbed CO2 and the production of many chemical species that originated from the CO2 on the surface. The structured catalyst with the Ni/CeO2 component was prepared by a wash-coating method on an aluminum substrate with a honeycomb-fin configuration. The prepared catalyst showed a high methanation performance, indicating that the cell density and the configuration of the honeycomb-fin clearly influenced the performance. Especially, the structured catalyst with the stacked-type-fin enhanced the methanation performance that improved the mass transfer properties in the reaction field. Furthermore, the structured Ni/CeO2 catalyst showed a steady catalytic performance that maintained the high activity and the high selectivity during a durability test at 350°C. The honeycomb-type catalyst developed in this study has the potential to be a practicable catalyst for producing energy resources from CO2.

Catalytic combustion of isopropanol over Co-Mn mixed oxides modified ZSM-5 zeolite membrane catalysts coated on stainless steel fibers

Abstract A novel gradient porous Co-Mn mixed oxides modified ZSM-5 zeolite membrane/PSSF (paper-like stainless steel fibers) catalyst was prepared for catalytic combustion of isopropanol in a membrane reactor. First, the paper-like sintered stainless steel fibers (PSSF) support was fabricated by wet lay-up papermaking method and sintering process. Then, ZSM-5 zeolite membranes were synthesized on the surface of stainless steel fibers by using secondary growth process. Finally, the cobalt and manganese mixed oxides modified ZSM-5 zeolite membrane catalysts were prepared by wet impregnation method. These novel modified membrane catalysts were characterized by using SEM, XRD, N2 adsorption–desorption isotherms and XPS, respectively. The catalytic activity test was carried out over a membrane reactor filled with ZSM-5 zeolite membrane catalysts and granular catalysts, respectively. The experimental results showed that the junctures of stainless steel fibers were completely sintered together to form a three-dimensional network structure and ZSM-5 zeolite membrane was fabricated on the PSSF support with the thickness of 1.78 μm. The cobalt element existed as Co3+and Co2+, maganese element existed as Mn4+ and Mn3+. The results of catalytic activity tests showed that catalytic activity for isopropanol over ZSM-5 zeolite membrane catalyst was superior to that over granular ZMS-5 catalyst, the reaction temperature of 50% and 90% conversion of isopropanol over ZSM-5 zeolite membrane catalyst dramatically decreased. The Co-Mn(1:4)/ZSM-5/PSSF catalysts presented the most excellent catalytic activity for isopropanol combustion, compared with Co/ZSM-5/PSSF and Mn/ZSM-5/PSSF catalysts, respectively.