title: Preparation of diethylene glycol monomethyl ether monolaurate catalyzed by active carbon supported KF/CaO.
abstract: Diethylene glycol monomethyl ether monolaurate (DGMEML) was synthesized via the reaction of diethylene glycol monomethyl ether (DGME) with methyl laurate (ML) by a new solid base catalyst of KF/CaO/AC, which was prepared by impregnation method using active carbon as carrier. The catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), nitrogen physisorption-desorption and Hammett indicator methods; the effect of the mole ratio of KF to CaO, DGME to ML molar ratio, amount of catalyst, reaction time and temperature on the yield of DGMEML were studied; and the relationship between the structure of the catalyst and the yield of DGMEML was investigated. The formed KCaF3 and K2O were acting as the main active components in the catalytic transesterification; the highest yield of 96.3 % was obtained as KF-to-CaO molar ratio of 2.0, DGME to ML molar ratio of 4.0, catalyst amount of 5 wt%, and reaction time of 30 min at 75 °C; and the catalyst displayed good stability in the transesterification.
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihaer, 161006 China.
authors.forename: Shengfeng
authors.initials: S
authors.lastname: Lou
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihaer, 161006 China.
authors.forename: Lihua
authors.initials: L
authors.lastname: Jia
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihaer, 161006 China.
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Guo
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihaer, 161006 China.
authors.forename: Ping
authors.initials: P
authors.lastname: Wu
authors.affiliation: College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihaer, 161006 China.
authors.forename: Lianbing
authors.initials: L
authors.lastname: Gao
authors.affiliation: Heilongjiang Haohua Chemical Corporation Limited, Qiqihaer, 161033 China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Wang
keywords: Active carbon; CaO; Diethylene glycol monomethyl ether monolaurate; KF; Transesterification