酸功能化离子液体磺烷基咪唑对甲苯磺酸盐催化合成松香甲酯的研究

›› 2007, Vol. 27 ›› Issue (S1): 11-14.

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Synthesis of Methyl Abietine Catalyzed by Acidic Functional Ionic Liquid Sulfonic Alkylimidazole p-Toluenesulfonate

LIU Shi-wei^1,2, YU Shi-tao², LIU Fu-sheng², XIE Cong-xia³, ZHANG Peng-peng²

1. Institute of Chemical Industry of Forest Products, CAF;Key and Open Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, China;2. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;3. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

Received:2007-06-13 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-20

Abstract

Abstract: An acidic functional ionic liquid 1-(3-sulfonic group)propyl-3-methylimidazole p-toluenesulfonate[(HSO₃-pmim)pTSA] was synthesized, characterized and used to catalyze the esterification of rosin with methanol. The influences of reaction condition, such as amount of methanol and acidic functional ionic liquid, reaction time and reaciton temperature were examined. The optimum condition for esterification was obtained as follows:methanol 15 g, acidic ionic liquid 2.5 g, rosin 5 g, reaction temperature 200℃ and reaction time 4 h. Under the above condition, the acid value of methyl abietate was 17.4 mg/g. The recyclability of the ionic liquid was investigated. When the ionic liquid was repeatedly used for five times, the acid value of methyl abietate was still 20.1 mg/g.The catalyst for this synthesis has advantages of high yield, simple experimental operation and product isolation, and easy reusability of the catalyst, and it was expected to realize an clean and environmental friendly strategy for the production of methyl abietate.

Key words: acidic functional ionic liquid, rosin, methyl abietate, esterification

CLC Number:

TQ655

LIU Shi-wei;YU Shi-tao;LIU Fu-sheng;XIE Cong-xia;ZHANG Peng-peng. Synthesis of Methyl Abietine Catalyzed by Acidic Functional Ionic Liquid Sulfonic Alkylimidazole p-Toluenesulfonate[J]. , 2007, 27(S1): 11-14.

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Synthesis of Methyl Abietine Catalyzed by Acidic Functional Ionic Liquid Sulfonic Alkylimidazole p-Toluenesulfonate

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