Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide
AssigneeE. I. Du Pont de Nemours and Company
InventorsMark Andrew Harmer, Qun Sun
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Abstract
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.
Claims5
A process for regenerating a catalyst comprising a porous microcomposite comprising perfluorinated ion-exchange polymer with pendant sulfonic and/or carboxylic acid groups entrapped within and highly dispersed throughout a network of metal oxide, wherein the weight percentage of perfluorinated ion-exchange polymer in the microcomposite is from about 0.1 to about 90 percent, wherein the size of the pores in the microcomposite is about 1 nm to about 75 nm, comprising the steps of:
- (a) contacting the microcomposite with an acid;
- and
- (b) removing the excess acid to yield the regenerated catalyst.
Dependencies are inferred from the claim text.