公开(公告)号：US20030233014A1

公开(公告)日：2003-12-18

申请号：US10452220

申请日：2003-06-03

Applicant: Korea Institute of Science and Technology.

Inventor： Myung-Suk Chun ,  In Kyu Song ,  Suk Woo Nam

IPC: C07C051/235 ,  B01J021/12 ,  B01J021/14 ,  B01J021/08

CPC classification number: C07C51/235 ,  B01J27/188 ,  B01J37/031 ,  B01J38/68 ,  C07C51/252 ,  Y02P20/584 ,  C07C57/04

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.

Abstract translation: 本发明涉及一种制备杂多酸催化剂的方法及其制备方法。 更具体地说，本发明涉及一种制备杂多酸催化剂的方法，该方法是通过将杂多酸和/或其盐溶解在碱性有机溶剂中进行重结晶并进行热处理制备的，进一步涉及一种使用 其中杂多酸催化剂的使用增加了由杂多阴离子改性的电子性质引起的氧化反应的活性，并由甲基丙烯醛高效生产甲基丙烯酸，因为溶剂的碱性可以抑制杂多酸的特殊酸性。