论文部分内容阅读
杂多化合物是一类含有氧桥的多核配位物。本世纪七十年代,日本在丙烯水合生产上,采用杂多酸型催化剂,已成功地实现工业化,由甲基丙烯醛制甲基丙烯酸的杂多酸型催化工艺正在建厂。杂多酸型催化剂正为各国科学工作者所注目,据认为它与复合氧化物,分子筛等催化剂比较有独特的优点,在许多反应中它的催化活性、选择性超过复合氧化物和分子筛。杂多酸型催化剂具有如下特点: 1.Keggin型的杂多化合物(包括杂多酸
Heteropoly compounds are a class of polynuclear ligands containing oxygen bridges. Seventies of this century, Japan in the hydration of propylene production, the use of heteropoly acid catalyst, has been successfully industrialized, methacrolein-based heteropoly acid-based catalytic process is being built. Heteropolyacid type catalysts are attracting the attention of scientists from all over the world. It is believed that it has unique advantages over catalysts such as complex oxides and molecular sieves, and its catalytic activity and selectivity exceed that of composite oxides and molecular sieves in many reactions. Heteropoly acid type catalyst has the following characteristics: 1.Keggin-type heteropoly compounds (including heteropoly acid