Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (7): 788-793.DOI: 10.11944/j.issn.1000-0518.2015.07.140390

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Production of the Novel Biodiesel over Potassium Floride and Calcium Oxide Loaded Kaolinite Solid Base Catalyst

GUO Xiangfeng, CHEN Juan, LIU Cong, LI Yanhui, JIA Lihua*   

  1. Key Laboratory of Fine Chemicals of College of Heilongjiang Province College of Chemistry and Chemical Engineering Heilongjiang Qiqihar University,Qiqihar,Heilongjiang 161006,China
  • Received:2014-11-13 Accepted:2015-03-25 Published:2015-06-30 Online:2015-06-30
  • Contact: Lihua JIA
  • Supported by:
    Supported by the Science Research Project of the Ministry of Education of Heilongjiang Province of China(No.12511Z030)

Abstract:

A series of supported solid-base catalysts (GCK) was prepared by loading KF and CaO over kaolinite by impregnation. Their activity was investigated for the catalytic transesterification of methyl laurate (ML) with ethylene glycol monomethyl ether (EGME) to produce the novel biodiesel. The catalyst was characterized by X-ray diffraction, scanning electron microscopy and Hammett indicators methods. Moreover, the effect of loading amount of KF and main reaction parameters on the yield of novel biodiesel was examined. The base strength of the GCK (H_ value) varies from 7.2 to 18.4. The KCaF3 phase is the main active sites in GCK. The highest yield of novel biodiesel reaches 97.1 % under 25% loading of KF over GCK, EGME/ML molar ratio of 3.0, 4.5% loading of the catalyst (relative to the ML) and reacting for 2 h at 120 ℃. At last, the recycle of the catalyst was investigated.

 

Key words: potassium floride and calcium oxide, kaolin, impregnation, solid base catalyst, transesterification, novel biodiesel

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