Title:
METHOD OF REGENERATING A CATALYST FOR SYNTHESIS OF ALKYLENE CARBONATE AND/OR ALKYLENE GLYCOL, AND A METHOD FOR PRODUCING ALKYLENE CARBONATE AND/OR ALKYLENE GLYCOL
Document Type and Number:
WIPO Patent Application WO/2013/028039
Kind Code:
A2
Abstract:
The present invention relates to a method of regenerating a catalyst and a method for producing alkylene carbonate and/or alkylene glycol which can be used by regenerating a deactivated catalyst. The method of regenerating a catalyst comprises the steps of: concentrating, through the use of a thin film evaporation apparatus, a resultant product obtained by the reaction between alkylene oxide and carbon dioxide in the presence of a catalyst of a quaternary phosphonium iodide compound and/or quaternary phosphonium bromide compound; and allowing the concentrate to react with an iodine salt and/or bromine salt.
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Inventors:
YANG HONG-JU (KR)
LEE SUNG-HUN (KR)
HONG JUN-TAEK (KR)
LEE SUNG-HUN (KR)
HONG JUN-TAEK (KR)
Application Number:
PCT/KR2012/006786
Publication Date:
February 28, 2013
Filing Date:
August 24, 2012
Export Citation:
Assignee:
LOTTE CHEMICAL CORP (KR)
YANG HONG-JU (KR)
LEE SUNG-HUN (KR)
HONG JUN-TAEK (KR)
YANG HONG-JU (KR)
LEE SUNG-HUN (KR)
HONG JUN-TAEK (KR)
International Classes:
B01J38/02; B01J27/14; C07C29/94; C07C31/20
Foreign References:
| KR100880135B1 | 2009-01-23 | |||
| US4400559A | 1983-08-23 | |||
| KR910007046B1 | 1991-09-16 | |||
| KR800000941B1 | 1980-09-15 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (649-10 Yoksam-dongKangnam-Ku, Seoul 135-080, KR)
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Claims: