SO_4^(2-)/FeNH_4Y固体超强酸的酸性研究

Studies on acidity of SO_4^(2-)/FeNH_4 Y Superacidity

α-Fe2O3中的Fe可以在高温下与SO42-配位而产生超强酸性,由SO42-活化的α-Fe2O3可以催化许多反应。交换进入沸石内的Fe3+是否会与SO24-作用,对酸性有什么影响,本文制备了SO42-/FeNH4Y固体超强酸并以NH3的吸附为探针技术研究了这一课题。酸催化活性以丙酸与正丁醇的酯化反应来评定。

Fe ions inα-Fe2O3may cordinate with SO42 -at high temperature to form Superacidity,which may catalyze a lot reactions. This paper is to reflect a studies on whether Fe3 +ions exchanged withNaY zeolite can act with SO42 -and its dependence on the acidity by means of NH3desorption technique.The acid catalytic acitivity of the sample was evaluated using esterification of propanioic acid and n -bu-tand.