期刊
CATALYSIS COMMUNICATIONS
卷 8, 期 11, 页码 1759-1762出版社
ELSEVIER
DOI: 10.1016/j.catcom.2007.01.029
关键词
functionalized ionic liquid; esterification; catalyst; dioctyl phthalate
Dioctyl phthalate were synthesized by using acid functionalized ionic liquid as catalyst. The results indicated that HSO3-functionalized Bronsted acidic ionic liquids show better catalytic and reusable performance than non-functionalized ionic liquids or the combination of neutral ionic liquids and Bronsted acid. Under the optimum conditions, using 1-methyl-3-(3-sulfopropyl)-imidazolium hydrogen sulfate as catalyst, the conversion of phthalic anhydride was 98%. After easily separated from the products the ionic liquid could be reused 8 times without any disposal, and the conversion of phthalic anhydride was not less than 95%. Therefore, an environmental friendly approach for the synthesis of dioctyl plithalate is provided. (c) 2007 Elsevier B.V. All rights reserved.
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