Zirconium phenyl phosphonate phosphite as a highly active, reusable, solid acid catalyst for producing fatty acid polyol esters

TitleZirconium phenyl phosphonate phosphite as a highly active, reusable, solid acid catalyst for producing fatty acid polyol esters
Publication TypeJournal Article
Year of Publication2013
AuthorsVarhadi, P, Kotwal, M, Srinivas, D
JournalApplied Catalysis A-General
Volume462
Pagination129-136
Date PublishedJUL
ISSN0926-860X
KeywordsBiolubricants, Esterification of fatty acid, Fatty acid glycerides, Hydrophobic solid acid catalyst, Polyol esters, Zirconium phenyl phosphonate phosphite
Abstract

The application of zirconium phenyl phosphonate phosphite (ZrPP) as a solid acid catalyst for producing polyol esters by esterification of glycerol or trimethylolpropane with a fatty acid (C-8-C-18.1) is reported for the first time. ZrPP exhibits high catalytic activity and in particular, (di + tri) esters selectivity (92.3 mol%). These esters of polyols are known for their application as biolubricants. The catalyst prepared using phosphorous acid to phenyl phosphonic acid molar ratio of 3:1 was found superior. The influence of process parameters on activity and selectivity of the catalyst was investigated. ZrPP was reusable in at least three recycling experiments. Hydrophobicity due to exposed phenyl groups on the surface is the possible cause for superior esterification activity of this novel, solid catalyst. (C) 2013 Elsevier B.V. All rights reserved.

DOI10.1016/j.apcata.2013.04.043
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.674

Divison category: 
Catalysis and Inorganic Chemistry