Selective hydrogenolysis of glycerol to 1,2-propanediol: comparison of batch and continuous process operations

TitleSelective hydrogenolysis of glycerol to 1,2-propanediol: comparison of batch and continuous process operations
Publication TypeJournal Article
Year of Publication2010
AuthorsRode, CV, Ghalwadkar, AA, Mane, RB, Hengne, AM, Jadkar, ST, Biradar, NS
JournalOrganic Process Research & Development
Volume14
Issue6
Pagination1393-1400
Date PublishedNOV
ISSN1083-6160
Abstract

The screening of copper chromite catalysts with various promoters such as Al, Zn, and Ba for glycerol hydrogenolysis to 1,2-propanediol (1,2-PDO) in a batch reaction showed that Cu-Cr (Ba) catalyst gave the highest conversion of 34% and selectivity of 84% to 1,2-PDO. In a continuous operation (23 g catalyst bed) the same catalyst showed higher conversion of glycerol and selectivity for 1,2-PDO of 65% and > 90%, respectively, with an on-stream activity of similar to 800 h. Better performance in a continuous operation could be due to the in situ activation of the catalyst, suppression of glycerol cracking to ethylene glycol, as well as excessive hydrogenation of 1,2-PDO to 2-propanol due to lower contact time of 1.3 h as compared to that in a batch operation (5 h). Effects of various process parameters on conversion and selectivity also have been compared for batch and continuous operations.

DOI10.1021/op1001897
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.207
Divison category: 
Organic Chemistry