Preparation of bulk and supported heteropolyacid salts

被引:85
作者
Soled, S
Miseo, S
McVicker, G
Gates, WE
Gutierrez, A
Paes, J
机构
[1] Exxon Res. and Engineering Company, Annandale, NJ 08801
关键词
heteropolyacid; heteropolyacid salt;
D O I
10.1016/S0920-5861(96)00235-0
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
We describe the preparation of bulk and supported cesium and ammonium heteropolyacid and acid salts of 12-tungstophosphoric acid. Novel synthetic schemes to prepare supported forms of insoluble cesium- and ammonium-acid salts are discussed, and their behavior in model compound isomerization and alkylation reactions is described. In particular, we discuss the egg-white morphology associated with Cs-acid salts supported on silica extrudates prepared by a novel in situ-reaction/precipitation route. We also describe hydrothermal techniques developed for directly preparing the ammonium-acid salts of 12-tungstophosphoric acid and the extension of that technique to other heteropolyacid salts.
引用
收藏
页码:441 / 450
页数:10
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