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Issue 1, 2010
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Nanosheets as highly active solid acid catalysts for green chemical syntheses

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Abstract

Solid acid catalysts offer the opportunity to reduce environmental impact owing to such advantages as ease of product separation and recyclability of the catalyst, which contribute considerably to green chemistry. Nanosheets, crystalline two-dimensional metal oxide sheets prepared from cation-exchangeable layered metal oxides through exfoliation and aggregation, are a novel class of potential solid acid catalysts for replacing liquid acids, such as sulfuric acid. This article reviews the acid strength and acid catalysis of several types of nanosheets, which are strongly dependent on novel strong Brønsted acid sites attributed to bridged OH groups formed only on nanosheets. An efficient acid catalysis of layered protonated niobium molybdate in Friedel–Crafts alkylation, esterification and hydrolysis, owing to its unique intercalation availability, is also discussed.

Graphical abstract: Nanosheets as highly active solid acid catalysts for green chemical syntheses

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Publication details

The article was received on 08 Sep 2009, accepted on 26 Oct 2009 and first published on 04 Dec 2009


Article type: Review Article
DOI: 10.1039/B918563A
Citation: Energy Environ. Sci., 2010,3, 82-93
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    Nanosheets as highly active solid acid catalysts for green chemical syntheses

    A. Takagaki, C. Tagusagawa, S. Hayashi, M. Hara and K. Domen, Energy Environ. Sci., 2010, 3, 82
    DOI: 10.1039/B918563A

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