Nanosheets as highly active solid acid catalysts for green chemical syntheses

被引：175

作者：

Takagaki, Atsushi ^{[1
]}

Tagusagawa, Caio ^{[2
]}

Hayashi, Shigenobu ^{[3
]}

Hara, Michikazu ^{[4
]}

Domen, Kazunari ^{[2
]}

机构：

[1] JAIST, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan

[2] Univ Tokyo, Dept Chem Syst Engn, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

[3] Natl Inst Adv Ind Sci & Technol, Res Inst Instrumentat Frontier, Tsukuba, Ibaraki 3058565, Japan

[4] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2010年 / 3卷 / 01期

关键词：

PHOTOCHEMICAL HYDROGEN EVOLUTION; RHODIUM HYDROXIDE NANOPARTICLES; LOADED K4NB6O17 PHOTOCATALYST; MANGANESE OXIDE NANOSHEETS; CALCIUM NIOBATE NANOSHEETS; POLYMERIZED COMPLEX METHOD; TRANSITION-METAL OXIDE; LAYERED PEROVSKITE; NIOBIUM OXIDE; ION-EXCHANGE;

D O I：

10.1039/b918563a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 Bronsted 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.

引用

页码：82 / 93

页数：12

共 164 条

[1] Preparation of ion-exchangeable thin films of layered niobate K4Nb6O17 [J].