基本信息:
- 专利标题： PROCESS FOR RECOVERING AND RECYCLING AN ACID CATALYST
- 专利标题（中）：回收和回收酸催化剂的方法
- 申请号：PCT/US2011/051490 申请日：2011-09-14
- 公开(公告)号：WO2012040007A2 公开(公告)日：2012-03-29
- 发明人： BARNICKI, Scott, Donald , FALLING, Stephen, Neal , KANEL, Jeffrey, Scott , KLINE, Robert, Sterling , MACKENZIE, Peter, Borden
- 申请人： EASTMAN CHEMICAL COMPANY
- 申请人地址： 200 South Wilcox Drive Kingsport, TN 37660 US
- 专利权人： EASTMAN CHEMICAL COMPANY
- 当前专利权人： EASTMAN CHEMICAL COMPANY
- 当前专利权人地址： 200 South Wilcox Drive Kingsport, TN 37660 US
- 代理机构： KNIGHT, Jennifer, R.
- 优先权： US12/889,045 20100923
- 主分类号： B01D11/04
- IPC分类号： B01D11/04 ; C07C59/06
摘要：
Disclosed is a process for the extractive recovery of an acid catalyst from an aqueous mixture of glycolic acid with an extraction solvent comprising a tertiary amine or an onium carboxylate compound, a modifier, and a diluent. The acid catalyst, which can comprise strong acids such as sulfuric acid, alkyl sulfonic acids, and fluoroalkyl sulfonic acids, can be recovered by back extraction with aqueous formaldehyde and recycled to a process for the preparation of glycolic acid by the acid-catalyzed carbonylation of formaldehyde.
摘要（中）：
公开了一种从乙醇酸的水性混合物与包含叔胺或羧酸铝化合物，改性剂和稀释剂的萃取溶剂萃取回收酸催化剂的方法。 可以包含强酸如硫酸，烷基磺酸和氟代烷基磺酸的酸催化剂可以通过用甲醛水溶液反萃取回收，并循环至通过酸催化的羰基化反应制备乙醇酸的方法 甲醛。