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A novel structured zeolite membrane reactor based on a Cu–Mn (1:6)/ZSM-5/PSSF catalyst was developed for catalytic combustion of volatile organic compounds (VOCs). First, the ZSM-5 membrane/PSSF (paper-like sintered stainless steel fibers) composite was fabricated by the wet layup papermaking/sintering process and secondary growth process. The copper/manganese binary oxides modified ZSM-5 membrane catalyst was synthesized by an incipient wetness impregnation method. Catalytic combustion of VOCs in single and binary components was investigated over these structured zeolite membrane reactors using different gas hourly space velocity (GHSV) (3822–11466 h–1). Results showed that the complete destruction of isopropyl alcohol or ethyl acetate in a single component can be achieved below the temperature of 300 °C. The study exhibited that the presence of toluene in the binary mixture had a slight effect on the conversion of isopropyl alcohol or ethyl acetate. Isopropyl alcohol and ethyl acetate were found to be more reactive than toluene in the binary mixture. A higher temperature above 300 °C was needed to totally destroy toluene in the binary mixture. The structured zeolite membrane reactor exhibited a relatively lower bed pressure drop, excellent reaction stability, reasonable mass/heat transfer efficiency, and excellent contacting efficiency as well as relatively lower diffusion resistance.
Chen et al. (Tue,) studied this question.