Methane steam reforming in asymmetric Pd- and Pd-Ag/porous SS membrane reactors
1994; Elsevier BV; Volume: 119; Issue: 2 Linguagem: Inglês
10.1016/0926-860x(94)85199-9
ISSN1873-3875
AutoresJun Shu, Bernard P. A. Grandjean, Serge Kaliaguine,
Tópico(s)Catalytic Processes in Materials Science
ResumoThis work is devoted to applying electrolessly deposited Pd- and Pd-Ag/porous stainless steel composite membranes in methane steam reforming. The methane conversion is significantly enhanced by the partial removal of hydrogen from the reaction location as a result of diffusion through the Pd-based membranes. For example, at a total pressure of 136 kPa, a temperature of 500°C, a molar steam-to-methane ratio of 3, and in the presence of a commercial Ni/Al2O3 catalyst together with continuous pumping on the permeation side, a methane conversion twice as high as that in a non-membrane reactor was reached by using a Pd/SS membrane. These effects were examined under a variety of experimental conditions. A computer model of the membrane reactor was also developed to predict the effects of membrane separation on methane conversion.
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