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US 4,052,474 AGranted
Toluene disproportionation process using an unsupported perfluorinated polymer catalyst
AssigneeShell Oil Company
InventorJames D. McClure
Life of this patent
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Abstract
A process and catalyst for the disproportionation of toluene is disclosed. The catalyst is an unsupported solid perfluorinated polymer containing pendent sulfonic acid groups.
Claims3
A process for the catalytic disproportionation of toluene which comprises contacting a toluene feed stream in a reaction zone at a temperature of between about 150.degree. C and 225.degree. C with an unsupported solid perfluorinated polymer catalyst wherein said catalyst contains a repeating structure selected from the group of:
- ##STR6## where n is 0, 1 or 2;
- R is a radical selected from the group consisting of fluorine and perfluoroalkyl radicals having from 1 to 10 carbon atoms;
- and X is selected from the group consisting of:
- [O (CF.sub.2).sub.m ], [OCF.sub.2 CFY] or [OCFYCF.sub.2 ]
- where m is an integer from 2 to 10 and Y is a radical selected from the class consisting of fluorine and the trifluoromethyl radical.
2 more elements
Dependencies are inferred from the claim text.