论文信息 - Methane steam reforming in asymmetric Pd- and Pd-Ag/porous SS membrane reactors

Methane steam reforming in asymmetric Pd- and Pd-Ag/porous SS membrane reactors

Abstract This 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.

[1] E. C. Sanford,et al. Progress in catalysis , 1992 .

[2] Bernard P. A. Grandjean,et al. Simultaneous deposition of Pd and Ag on porous stainless steel by electroless plating , 1993 .

[3] J. Armor,et al. Catalysis with permselective inorganic membranes , 1989 .

[4] Moustafa A. Soliman,et al. On the non-monotonic behaviour of methane—steam reforming kinetics , 1990 .

[5] Bernard P. A. Grandjean,et al. Catalytic palladium‐based membrane reactors: A review , 1991 .

[6] Yu. I. Aristov,et al. Intensification of hydrogen production via methane reforming and the optimization of H2:CO ratio in a catalytic reactor with a hydrogen-permeable membrane wall , 1992 .

[7] Masato Machida,et al. Promotion of hydrogen permeation on metal-dispersed alumina membranes and its application to a membrane reactor for methane steam reforming , 1994 .

[8] J. P. Hook. Methane-steam reforming , 1980 .

[9] Shigeyuki Uemiya,et al. Steam reforming of methane in a hydrogen-permeable membrane reactor , 1990 .

[10] G. Froment,et al. Methane steam reforming, methanation and water‐gas shift: I. Intrinsic kinetics , 1989 .

[11] Johannes Schmitz,et al. Steam reforming of natural gas with intergrated hydrogen separation for hydrogen production , 1987 .

[12] Said S.E.H. Elnashaie,et al. A fluidized bed membrane reactor for the steam reforming of methane , 1991 .