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.
Claims6
An improved process for the esterification of a carboxylic acid with an olefin wherein the improvement comprises contacting said carboxylic acid with a catalytic 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, and wherein the size of the pores in the microcomposite is about 0.5 nm to about 75 nm.
Dependencies are inferred from the claim text.