林业工程学报2016，Vol.1Issue(5)：89-94,6.DOI:10.13360/j.issn.2096-1359.2016.05.016
响应面法优化钙基固体碱KF／CaO催化沉香籽油制备生物柴油
Optimized preparation of biodiesel from KF/CaO-catalysed Aquilaria sinensis seed oil using response surface method
摘要
Abstract
Aquilaria sinensis seed contains rich oil, and is one of the important raw materials of biomass energy. In the context of China�s energy shortage, A. sinensis seed has an important significance. Fatty acid compositions of A. sinensis seed oil are mainly oleic acid, palmitic acid and palmitoleic acid. Solid base KF/CaO was used to catalyze transesterifi⁃cation to prepare traditional biodiesel( fatty acid methyl ester) . The SEM, XRD and FTIR analyses showed that the cata⁃lyst KF/CaO had a structure of multilayer chip with a large specific surface area of (107±0�5) m2/g. The catalytic com⁃ponent on the surface of the catalyst was mainly KCaF3 , and the existence of Ca—O—F lattice was verified by the Fou⁃rier transformed infrared spectrum ( FTIR) . Single factor experiment was used to optimize the factors affecting the trans⁃esterification reaction of A. sinensis seed oil, and the optimum transesterification reaction was obtained when the reaction time was 100 min;dosage of the catalyst ( KF/CaO) was 2�0%;molar ratio of methanol to A. sinensis seed oil was 8∶1;and the reaction temperature was 79℃. The response surface experiment was then optimized by using the Box⁃Behnken module of the Design⁃Expert software. The influence of catalyst dosage ( A) , reaction temperature ( B) , the molar ratio of methanol to oil ( C) , reaction time ( D) and the interaction between these factors on the conversion rate was investiga⁃ted. The results showed that the influence of all the factors was highly significant. The optimum parameters of the catalyt⁃ic transesterification reaction of A. sinensis seed oil was:time of the reaction was 107�2 min;dosage of the catalyst ( KF/CaO) was 2�02%;molar ratio of methanol to A. sinensis seed oil was 8�36∶1;temperature of the reaction was 79�14℃. The prepared bio⁃diesel can meet the requirements of the national standard.关键词
生物柴油/KF/CaO/响应面/沉香籽/固体碱Key words
biodiesel/KF/CaO/response surface/Aquilaria sinensis seed/solid base分类
化学化工引用本文复制引用
张爱华,易智彪,吴红,李昌珠,肖志红..响应面法优化钙基固体碱KF／CaO催化沉香籽油制备生物柴油[J].林业工程学报,2016,1(5):89-94,6.基金项目
湖南省自然科学基金项目（14JJ2141）；广东省高新区专项（2012B011000050）。 （）
