期刊
APPLIED CATALYSIS A-GENERAL
卷 309, 期 2, 页码 162-168出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2006.03.060
关键词
heterogeneous oxidation; supported catalyst; phthalocyanine; aerobic oxidation; chitosan; isophorone
The immobilisation of water-soluble metallophthalocyanine complexes on chitosan aerogel microspheres affords new bifunctional catalysts which have been used for the aerobic oxidation of beta-isophorone. Chitosan is both the support of the metal complex and the organic base necessary for the reaction. These new materials have been characterized by nitrogen adsorption/desorption, scanning electron microscopy, diffuse reflectance UV-vis and N-15 NMR spectroscopies. The influence of the reaction parameters on the efficiency of heterogeneous oxidation of beta-isophorone, an important substrate for the preparation of flavour and fragrance fine chemicals has been studied. Combination of basic and oxidation sites in one solid material provided a more efficient heterogeneous clean oxidation of beta-isophorone by O-2 without any waste. (C) 2006 Elsevier B.V. All rights reserved.
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