Preparation of bulk and supported heteropolyacid salts
Preparation of bulk and supported heteropolyacid salts
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DOI：
10.1016/s0920-5861(96)00235-0
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发表时间：
1997-04
期刊：
影响因子：
5.3
通讯作者：
S. Soled;S. Miseo;G. Mcvicker;W. Gates;Antonio Gutierrez;J. Paes
中科院分区：
文献类型：
--
作者：
S. Soled;S. Miseo;G. Mcvicker;W. Gates;Antonio Gutierrez;J. Paes
叙述了块体和负载型铯铵杂多酸及12-钨磷酸酸盐的制备。讨论了制备不溶性铯酸盐和铵酸盐的新合成方案，并描述了它们在模型化合物异构化和烷基化反应中的行为。特别地，我们讨论了用一种新的原位反应/沉淀方法制备的二氧化硅挤出物上支持cs酸盐的蛋清形态。本文还介绍了直接制备12-钨磷酸铵酸盐的水热技术以及该技术在其他杂多酸盐中的推广。
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.