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US 4,543,436 AGranted
Chromium phosphate as an alkylation catalyst
AssigneePhillips Petroleum Company
InventorsMarvin M. Johnson, Gerhard P. Nowack
Life of this patent
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Abstract
An amorphous chromium (III) phosphate catalyst is used in alkylating aromatics and in the dehydration of alcohols to ethers.
Claims9
A process for the alkylation with alcohols of aromatics which comprises contacting said aromatics with said alcohol in the presence of a mixture of Cr.sup.+3 and a phosphate chosen from at least one of PO.sub.4.sup.-3 and HPO.sub.4.sup.-2.
A process according to claim 8 where said chromium-to-phosphorus ratio ranges from about 1.2:1 to about 1.7:1.
Dependencies are inferred from the claim text.