Invention Application
US20030233014A1 Method for preparing a heteropolyacid catalyst from basic solvent treatments and method for preparing methacrylic acid using thereof 失效
从碱性溶剂处理制备杂多酸催化剂的方法和使用其制备甲基丙烯酸的方法

Method for preparing a heteropolyacid catalyst from basic solvent treatments and method for preparing methacrylic acid using thereof
Abstract:
The present invention relates to a method for preparing a heteropolyacid catalyst and method for preparing methacrylic acid using thereof. More particularly, the present invention relates to a method for preparing heteropolyacid catalyst, which is produced by the recrystallization of a heteropolyacid and/or its salt dissolved in a basic organic solvent and heat-treatment, and further to a method for preparing metachrylic acid using thereof, wherein the use of the heteropolyacid catalyst increases the activity of oxidation reaction induced by the modified electronic properties of heteropolyanions and provides high efficiency production of methacrylic acid from methacrolein, since the basic property of solvent inhibits peculiar acidic property of heteropolyacid.
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