苯甲醚在复合催化剂上的催化酰化(英文)

Catalytic Acylation of Anisole over Co-catalysts

复合催化剂首次用于催化苯甲醚与酰化剂乙酰氯的酰化反应.发现不同沸石的单独使用仅给出很低产率的对-甲氧基苯乙酮.但是由HY沸石(硅铝比=40)或USY(超稳Y沸石)和SnO组成的复合催化剂的催化活性比单独使用沸石时高得多.增加由USY沸石和不同量的SnO组成的复合催化剂中的SnO的量,导致对-甲氧基苯乙酮产率的提高.由H型沸石(HY和H-ZSM-5沸石)和SnO组成的复合催化剂在苯甲醚与乙酰氯的酰化反应中的催化活性主要取决于所用沸石的硅铝比.

The co-catalysts was first used to eatalyse the aeylation reaction of anisole with an aeylating agent, aeetyl chloride. It was found that the single use of various zeolites gave only a very low yield of 4-methoxyaeetophenone, but that the co-catalysts consisting of HY （SiO2/Al2O3 molar ratio = 40） or USY zeolite and SnO possessed much higher activity than the use of zeolite only. Increasing the amount of SnO present in the co-catalysts consisting of USY zeolite and various amounts of SnO led to a rise in the yield of 4-methoxyaeetophenone. The activity of the co-catalysts consisting of H form zeolites （HY, H-β and HZSM-5 ） and SnO in the reaction of anisole with aeetyl chloride mainly depended upon the SiO2/Al2O3 molar ratio of the zeolite used.