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Citation: JIN Fuquan. Preparation and Characterization of KF/Zn-Al Solid Base Catalyst for Biodiesel[J]. Chinese Journal of Applied Chemistry, ;2013, 30(11): 1319-1325. doi: 10.3724/SP.J.1095.2013.30001 shu

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 Date: 4 January 2013
Revised Date: 15 February 2013

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.
- hydrotalcite-like compound,
- complex oxide,
- solid base,
- catalyst,
- biodiesel
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