Esterification of camphene over heterogeneous heteropoly acid catalysts: Synthesis of isobornyl carboxylates

被引：32

作者：

de Meireles, Augusto L. P. ^{[1
]}

da Silva Rocha, Kelly A. ^{[2
]}

Kozhevnikov, Ivan V. ^{[3
]}

Gusevskaya, Elena V. ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil

[2] Univ Fed Ouro Preto, Dept Quim, BR-35400000 Ouro Preto, MG, Brazil

[3] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England

来源：

APPLIED CATALYSIS A-GENERAL | 2011年 / 409卷

关键词：

Biomass-based feedstock; Esterification; Camphene; Heterogeneous acid catalysis; Heteropoly acid; ALPHA-PINENE OXIDE; HYDRATION; ACETOXYLATION; ISOMERIZATION; SILICA;

D O I：

10.1016/j.apcata.2011.09.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Silica supported H3PW12O40 (PW), the strongest heteropoly acid in the Keggin series, is an active and environmentally friendly solid acid catalyst for liquid-phase esterification of camphene, a renewable biomass-based substrate, with C-2, C-4 and C-6 short-chain fatty acids. The reaction provides isobornyl carboxylates, useful as fragrances, in virtually 100% selectivity and 80-90% yield. The reaction is equilibrium-controlled and occurs under mild conditions with a catalyst turnover number of up to 3000. The use of hydrocarbon solvent prevents PW from leaching to allow easy catalyst recovery. The catalyst can be reused several times without loss of activity and selectivity. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：82 / 86

页数：5

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