Solid Acid Used as Highly Efficient Catalyst for Esterification of Free Fatty Acids with Alcohols  

作　　者：Zhang Qiuyun Li Hu Qin Wenting Liu Xiaofang Zhang Yuping Xue Wei Yang Song 

机构地区：[1]State-Local Joint Laboratory for Comprehensive Utilization of Biomass,State Key Laboratory Breeding Base of Green Pesticides and Agricultural Bioengineering,Center for Research and Development of Fine Chemicals,Guizhou University

出　　处：《China Petroleum Processing & Petrochemical Technology》2013年第1期19-24,共6页中国炼油与石油化工（英文版）

基　　金：financially supported by the International Science & Technology Cooperation Program of China(No.2010DFB60840);the Key Science and Technology Project of Guizhou Province(No.20076004);the Social Development S&T Program(No.SZ-[2009]3011);the National Key Technology R&D Program(No.2006BAD07A12)

摘　　要：Anovel solid acid catalyst, which was prepared from sodium alginate (SA) and metal chlorides and characterized with XRD and FT-IR spectrometry, was used for the preparation of biodiesel via esterification reaction. The study results showed that the aluminum-alginate complex prepared in a cheap and easy way exhibited high catalytic activity, and a 92.6% conversion of methyl oleate was obtained in the presence of 4m% of catalyst dosage upon refluxing for 3h of methanol and acid mixed in a molar ratio of 10:1. It should be noted that the catalyst can be applied to the esterification reaction of fatty acids with various carbon chain length on methanol or different short chain alcohols, indicating that the catalyst is suitable for the preparation of biodiesel from waste oils with a high acid value.A novel solid acid catalyst, which was prepared from sodium alginate （SA） and metal chlorides and characterized with XRD and FT-IR spectrometry, was used for the preparation of biodiesel via esterification reaction. The study results showed that the aluminum-alginate complex prepared in a cheap and easy way exhibited high catalytic activity, and a 92.6% conversion of methyl oleate was obtained in the presence of 4 m% of catalyst dosage upon refluxing for 3 h of methanol and acid mixed in a molar ratio of 10：1. It should be noted that the catalyst can be applied to the esterification reaction of fatty acids with various carbon chain length on methanol or different short chain alcohols, indicating that the catalyst is suitable for the preparation of biodiesel from waste oils with a high acid value.

关 键 词：sodium alginate solid acid ESTERIFICATION BIODIESEL 

分 类 号：O643.32[理学—物理化学]