05871650 is referenced by 48 patents and cites 66 patents.

The present invention is directed toward a new zeolite membrane which exhibits a columnar cross-sectional morphology and preferred crystallographic orientation comprising a porous substrate having coated thereon a mesoporous growth enhancing layer and a layer of columnar zeolite crystals on said mesoporous growth enhancing layer, and wherein said mesoporous growth enhancing layer comprises nanocrystalline or colloidal sized zeolites, nanocrystalline or colloidal zeolite and metal oxide, or nanocrystalline or colloidal zeolite and colloidal metal, or nanocrystalline or colloidal zeolite, colloidal metal and metal oxide, and wherein said mesoporous growth enhancing layer has interstices of about 20 to about 2000 .ANG., and wherein said columnar zeolite layer is a polycrystalline layer wherein 99.9% of said columnar zeolite crystals have at least one point between adjacent crystals that is .ltoreq.20 .ANG.. The invention is further directed to a process of producing a zeolite membrane exhibiting a columnar crystallographic orientation.

Title
Supported zeolite membranes with controlled crystal width and preferred orientation grown on a growth enhancing layer
Application Number
8/272361
Publication Number
5871650
Application Date
July 8, 1994
Publication Date
February 16, 1999
Inventor
Johannes Petrus Verduijn
Leefdaal
BE
James Alexander McHenry
Washington
NJ, US
Harry William Deckman
Clinton
NJ, US
Wenyih Frank Lai
Fair Lawn
NJ, US
Agent
Estelle C Bakun
Assignee
Exxon Research and Engineering Company
NJ, US
IPC
B01D 61/00
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