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Toward a rational control of solid acid catalysis for green synthesis and biomass conversion

✍ Scribed by Shimizu, Ken-ichi; Satsuma, Atsushi

Book ID
119976738
Publisher
Royal Society of Chemistry
Year
2011
Tongue
English
Weight
668 KB
Volume
4
Category
Article
ISSN
1754-5692

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✦ Synopsis

Design of solid acid catalysts is one of the key technologies to establish environmental friendly catalytic processes. Featuring cation-exchanged clay and metal salts of heteropolyacids as model solid acid catalysts, a strategy for design of active catalysts for green chemical and biomass conversion processes is discussed. The important role of solid Lewis acids was suggested in acetylation of alcohols with acetic anhydride by cation-exchanged clay, Friedel-Crafts acylation and alkylation of aromatic compounds with metal salts of heteropolyacids, and hydrolysis of cellulose into saccharides. The significant influence of reactor design and reaction conditions on dehydration of saccharides into 5-hydroxymethylfurfural (HMF) is also discussed.

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## Abstract An effective microwave‐induced, solid acid‐catalyzed, environmentally benign synthesis of substituted pyrroles, indoles and carbazoles under solvent‐free conditions is described. The new synthetic methodology is based on the use of a considerably strong solid acid, K‐10 montmorillonite.