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Keggin型杂多酸化合物的热稳定性高,又具有强酸性和氧化还原性,故其催化作用很引人注目.由于其结构上的特点,反应物分子能出入催化剂的体相内部,因而体相中的活性中心也起作用,被称作“假液相”催化.杂多酸用于甲醇催化转化为烃的反应有不少研究.据报道,12-钨磷酸(H_3PW_(12)O_(40))和12-钨硅酸(H_4SiW_(12)O_(40))、12-钨磷酸铜(Cu_(3/2)PW_(12)O_(40))对甲醇转化反应都有相当高的活性.1,4-二嗪和1,3,5-三嗪的12-
Due to its high thermal stability, strong acidity and redox activity, Keggin-type heteropolyacid compounds attract attention because of their structural characteristics, which make it possible for the reactant molecules to enter and exit the bulk of the catalyst. The active center in the phase also plays a role, known as the “pseudo-liquid phase.” Heteropolyacid has been studied for the catalytic conversion of methanol to hydrocarbons. It has been reported that 12-tungstophosphoric acid (H_3PW_ (12) O_ 40) and 12-tungstosilicic acid (H_4SiW_ (12) O_ (40)) and 12-copper trungotungstate (Cu_ (3/2) PW_ (12) O_ (40) Activity of 1,4-diazine and 1,3,5-triazine 12-