Recent advances in immobilization of heteropolyacids
Recent advances in immobilization of heteropolyacids
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DOI：
10.1163/156856798x00500
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发表时间：
1998-01-01
影响因子：
3.3
通讯作者：
Izumi, Y
中科院分区：
文献类型：
--
作者：
Izumi, Y
自由水溶性杂多酸可以通过负载在活性炭上或通过形成酸性铯盐而变得不溶。此外，12-钨磷酸和它的酸性铯盐可以有效地固定在硅胶基质通过溶胶-凝胶技术，其中涉及的正硅酸乙酯的水解，得到不溶性，易于回收，和高活性的固体酸催化剂的乙酸乙酯的水解。
Freely water-soluble heteropolyacid could be made insoluble either by supporting on active carbon or by forming acidic cesium salts. In addition, 12-tungstophosphoric acid and its acidic cesium salt could be effectively immobilized in silica matrices by means of a sol-gel technique which involves the hydrolysis of ethyl orthosilicate to give insoluble, readily recoverable, and highly active solid acid catalysts for the hydrolysis of ethyl acetate.