| 摘要 |
A solid fluorocarbon polymer containing pendant sulfonic acid groups and supported on a solid substrate is prepared using an intermediate which is either thermoplastic or soluble to a measurable extent in a solvent. The intermediate is formed into the desired shape and then the intermediate is converted as desired to the sulfonic acid form for use as a catalyst. A preferred embodiment is a solid polymeric acid catalyst consisting essentially of a thin film, less than 2 mils thick, of a solid perfluorocarbon polymer containing pendant acid groups and supported on the surface of a solid impermeable substrate such as a heat conductive metallic composition.
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