Preparation of encaged heteropoly acid catalyst by synthesizing 12-molybdophosphoric acid in the supercages of Y-type zeolite
Preparation of encaged heteropoly acid catalyst by synthesizing 12-molybdophosphoric acid in the supercages of Y-type zeolite
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DOI：
10.1016/s0926-860x(97)00203-2
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发表时间：
1997-12
影响因子：
5.5
通讯作者：
S. Mukai;T. Masuda;I. Ogino;K. Hashimoto
中科院分区：
文献类型：
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作者：
S. Mukai;T. Masuda;I. Ogino;K. Hashimoto
12-以氧化钼和磷酸为原料，在Y型沸石晶体和去离子水的混合浆液中合成了包埋在Y型沸石超笼中的磷钼杂多酸。在热水中彻底洗涤后，发现12-正磷酸以估计为0.09 g（g-载体）-1的量保留在Y型沸石中。发现由此获得的催化剂对乙酸与乙醇的酯化反应显示出活性，表明该催化剂可在涉及水的各种液相反应中用作固体酸催化剂。
12-molybdophosphoric acid encaged in the supercages of Y-type zeolite was synthesized from molybdenum oxide and phosphoric acid, in a slurry mixture of Y-type zeolite crystals and deionized water. After thorough washing in hot water, the 12-molybdophosphoric acid was found to remain in the Y-type zeolite, at an amount estimated to be 0.09 g (g-support)−1. Catalysts thus obtained were found to show activity for the esterification of acetic acid with ethanol, indicating that this catalyst could be used as a solid acid catalyst in various liquid phase reactions which involve water.