Effect of pretreatment conditions on the catalytic activity of nano-sized TPA/ZrO2 dispersed in SBA-15 channels in acetylation reactions

TitleEffect of pretreatment conditions on the catalytic activity of nano-sized TPA/ZrO2 dispersed in SBA-15 channels in acetylation reactions
Publication TypeJournal Article
Year of Publication2007
AuthorsSawant, DP, Hartmann, M, Halligudi, SB
JournalMicroporous and Mesoporous Materials
Volume102
Issue1-3
Pagination223-233
Date PublishedMAY
Type of ArticleArticle
ISSN1387-1811
Keywordsacetylation, SBA-15, TPA/ZrO2, veratrole, wet-impregnation
Abstract

Acetylation of an aromatic compounds such as veratrole (1,2-dimethoxybenzene), anisole, thioanisole, isobutyl benzene and 2-methoxynaphthalene with acetic anhydride has been investigated over a nano-sized 12-tungstophosphoric acid (TPA)/22.4 wt.%ZrO2/SBA- 15 catalysts in the liquid phase conditions. Catalysts with different (%) TPA and zirconia loadings calcined at different temperatures were prepared by wet-impregnation and characterized by XRD, N-2 adsorption-desorption, FT-Rarnan, X-ray photoelectron spectroscopy (XPS). The acidic behavior of the catalyst was studied by TPD of ammonia and FT-IR pyridine adsorption. Among the catalysts, 15 wt.%TPA/22.4 wt.%ZrO2/SBA- 15 calcined at 1123 K had the highest acidity and was the most active catalyst in veratrole acetylation with acetic anhydride. (C) 2007 Elsevier Inc. All rights reserved.

DOI10.1016/j.micromeso.2006.12.046
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.349
Divison category: 
Catalysis and Inorganic Chemistry