中南大学学报（自然科学版）2011，Vol.42Issue(5)：1226-1231,6.
采用固体磷钨酸铯盐催化光皮树油制备生物柴油
Preparation of biodiesel from Cornus wilsonian oil catalyzed by solid cesium phosphotungstates
摘要
Abstract
Solid cesium phosphotungstates CsxH3-xPW12O40(x=2.0, 2.5, 3.0) were synthesized and characterized by FT-IR, XRD and BET techniques. CsxH3-xPW12O40(x=2.0, 2.5, 3.0) were used as a solid catalyst for the production of biodiesel from Cornus wilsoniana oil with methanol respectively. The three catalysts were compared under the same conditions of reaction temperature, reaction time, molar ratio of methanol to oil and catalyst dosage on the conversion rate of Comus wilsoniana oil. The results show that Cs2.5H0.5PW12O40 has higher catalytic activity than Cs2HPW12O40 and Cs3PW12O40. The conversion of Comus wilsoniana oil can be up to 91％ under the reaction condition of molar ratio of methanol to oil 9:1, catalyst dosage 2.8％, temperature 65 ℃, reaction time 20 h by the catalyst of Cs2.5H0.5PW12O40.Solid cesium phosphotungstates of high surface area and the most acid strength are not affected by free fatty acid content and moisture in Cornus wilsoniana oil. Furthermore, they can be separated from the biodiesel easily and can be used repeatedly. Therefore, solid cesium phosphotungstates are green environmental protection solid catalysts for the production of biodiesel.关键词
固体磷钨酸铯盐/固体催化剂/生物柴油/光皮树油/酯交换分类
能源科技引用本文复制引用
李念,钟世安..采用固体磷钨酸铯盐催化光皮树油制备生物柴油[J].中南大学学报（自然科学版）,2011,42(5):1226-1231,6.基金项目
湖南省科学技术厅科技计划立项项目(2008SK4032) （2008SK4032）
