Studies on membrane catalysis IV. Pd-Al2O3 membrane reactor

Abstract

Alumina membrane which included palladium indignent was prepared by the sol-gel method. Dehydrogenation of ethanol to acetaldehyde was carried out in this Pd-Al2O3 membrane reactor; and the yield of acetaldehyde was higher than that in the pure Al2O3 membrane. The average pore diameter of the Pd-Al2O3 membrane was 5-6nm, within the range that a Knudsen process acts. But the separation factor of H2/Ar was higher than Knudsen value, this suggested the increase of the selectivity of permeation of H2. This Pd-Al2O3 membrane was also characterized by XRD and SEM.

Key words: ETHANOL, ALUMINIUM OXIDE, ACETALDEHYDE, X-RAY DIFFRACTION ANALYSIS, DEHYDROGENATION, CERAMICS, SCANNING ELECTRON MICROSCOPES, PALLADIUM, LAMINATED FILMS

CLC Number:

O643

Cite this article

ZHOU PO;CAO ZHAO;DENG JINGFA. Studies on membrane catalysis IV. Pd-Al2O3 membrane reactor[J]. Acta Chimica Sinica, 1995, 53(9): 878-882.

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膜催化研究IV: 钯-氧化铝/陶瓷复合膜