Suppression of external activity of metal-containing zeolite catalysts
Abstract
Abstract A METHOD OF TREATING A ZEOLITE CONTATINING A CATALYTICALLY ACTIVE METAL COMPONENT ON ITS EXTERNAL SURFACE TO RENDER THE EXTERNAL SURFACE OF SAID ZEOLITE LOWER IN CATALYTIC ACTIVITY WITHOUT AFFECTING THE CATALYTIC ACTIVITY OF THE INTERIOR OF SAID ZEOLITE WHICH COMPRISES CONTACTING SAID ZEOLITE WITH A SOLUTION OF A COMPOUND OF A METAL OTHER THAN THAT CONSTITUTING SAID CATALYTICALLY ACITVE METAL COMPONENT IN A SOLVENT INCAPABLE OF ENTERING THE PORES OF SAID ZEOLITE AND DEPOSITING THE METAL OF SAID COMPOUND ON THE SURFACE OF SAID ZEOLITE CONTAINING SAID CATALYTICALLY ACTIVE METAL COMPONENT, WHEREBY THE CATALYTIC ACTIVITY OF THE EXTERNAL SURFACE OF SAID ZEOLITE IS DIMINISHED WITHOUT EFFECTING REMOVAL OF A SUBSTANTIAL PORTION OF SAID CATALYTICALLY ACTIVE METAL FROM SAID ZEOLITE. ALSO, THE ZEOLITE PREPARED BY THE AFORESAID METHOD AND CATALYTIC HYDROCARBON CONVERSION IN THE PRESENCE THEREOF.
Inventors
- 👤 Emmerson Bowes
Bibliographic Details
Claims Analysis
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