Preparation and Characterization of KF/Zn-Al Solid Base Catalyst for Biodiesel

doi:10.3724/SP.J.1095.2013.30001

Chinese Journal of Applied Chemistry

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Preparation and Characterization of KF/Zn-Al Solid Base Catalyst for Biodiesel

JIN Fuquan

(Department of Chemistry and Chemical Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)

Received:2013-01-04 Revised:2013-02-07 Published:2013-11-10 Online:2013-11-10

Abstract

Abstract: KF/Zn-Al solid base catalyst was prepared by coprecipitation and calcination by doping KF on calcined Zn-Al hydrotalcite-like compounds. Effects of different preparation conditions on the catalytic activity of the KF/Zn-Al solid base were investigated through orthogonal experiments. The optimal condition was obtained at aging temperature of 353 K, aging time of 16 h, calcination temperature of 823 K, calcination time of 6 h and KF/Zn-Al mass ratio of 1. When the reaction was carried out at 338 K for 0.5 h with alcohol/oil molar ratio of 9, catalyst/oil mass ratio of 0.04, rapeseed oil conversion could reach 97.75% in the presence of the KF/Zn-Al catalyst prepared at optimal conditions. The catalyst and its precursor were characterized using TG-DTG, BET, XRD, SEM and Hammett indicator method. Relationship between the structure and the surface properties of the catalyst and its activity was discussed.

Key words: hydrotalcite-like compound, complex oxide, solid base, catalyst,biodiesel

CLC Number:

O614
TQ645

JIN Fuquan. Preparation and Characterization of KF/Zn-Al Solid Base Catalyst for Biodiesel[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.30001.

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Preparation and Characterization of KF/Zn-Al Solid Base Catalyst for Biodiesel

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