The Impact of Reaction Pressure on the Catalytic Performance of the PdSb/TiO2 Catalyst in the Acetoxylation of Toluene into Benzyl Acetate

The acetoxylation of toluene in the presence of acetic acid and oxygen was performed over a PdSb/TiO2 catalyst at 210°C and at various reaction pressures (1-10bar). A remarkable improvement in the catalytic performance and a significant shortening of the induction period were found with an increase...

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Published inChemCatChem Vol. 5; no. 1; p. 185
Main Authors Madaan, Neetika, Gatla, Suresh, Kalevaru, Venkata Narayana, Radnik, Jörg, Pohl, Marga-Martina, Lücke, Bernhard, Brückner, Angelika, Martin, Andreas
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 01.01.2013
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Summary:The acetoxylation of toluene in the presence of acetic acid and oxygen was performed over a PdSb/TiO2 catalyst at 210°C and at various reaction pressures (1-10bar). A remarkable improvement in the catalytic performance and a significant shortening of the induction period were found with an increase in pressure. At a pressure of 6bar, the highest toluene conversion of 75% and 100% selectivity for benzyl acetate were observed. This result could be due to both the restructuring of the catalyst surface and to the formation of active PdSb particles of desired size, composition, and shape during the course of the induction period. Samples of the most-active and spent catalysts were studied by ex situ and insitu XRD, XPS, and TEM. [PUBLICATION ABSTRACT]
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.201200522