James M Mchenry

US Patent:

51837889, Feb 2, 1993

Filed:

Oct 10, 1991

Appl. No.:

7/775646

Inventors:

Allan J. Jacobson - Houston TX
Wen-Yih F. Lai - Fair Lawn NJ
Michael G. Matturro - Lambertville NJ
Harry W. Deckman - Clinton NJ
James A. McHenry - Washington NJ
Robert P. Reynolds - Clinton NJ
Qiyao Zhang - Belvidere NJ

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

B01J 3504

US Classification:

502 4

Abstract:

Accordingly, there is provided a catalytic membrane comprising a porous substrate having a first surface and a second surface. The substrate has micropores, for example, pores ranging from about 10. ANG. to about 2000. ANG. in diameter, at least in a region extending from the first surface toward the second surface for a preselected distance. Preferably, the preselected distance will be sufficient to provide a measurable resistance to the flow of a fluid, such as a gas, through the micropores. A catalyst is deposited at least on the first surface of the substrate, although optionally, the catalyst is deposited on the substrate in the micorpore region. A transport layer is provided on the first surface of the substrate, including any catalyst on the first surface.