Heteropolyacids supported on mesoporous AlSBA-15 as efficient catalysts for esterification of levulinic acid

TitleHeteropolyacids supported on mesoporous AlSBA-15 as efficient catalysts for esterification of levulinic acid
Publication TypeJournal Article
Year of Publication2019
AuthorsLucas, N, Gurrala, L, Athawale, A
JournalJournal of Porous Materials
Volume26
Issue5
Pagination1335-1343
Date PublishedOCT
Type of ArticleArticle
Abstract

A comparative study of different heteropoly acids supported on mesoporous AlSBA-15 for the synthesis of ethyl levulinate has been undertaken for the first time. The catalysts were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma-optical emission spectrometry, thermo gravimetric analysis, temperature programmed desorption of NH3 and N-2 sorption studies. Insights into crucial parameters for the esterification reactions are also furnished. A distinct correlation was observed between acid density and conversion revealing that the distribution of acidic sites and their accessibility by the reactant moieties plays an important role in determining the overall activity. The effects of various reaction parameters were investigated to enhance the catalytic activity and yield of ethyl levulinate. Under the optimized conditions, levulinic acid conversion of 87.4 mol% and ethyl levulinate selectivity of 100% could be obtained with silicotungstic acid supported on AlSBA-15.

DOI10.1007/s10934-019-00734-w
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

1.947

Divison category: 
Catalysis and Inorganic Chemistry