基于纤维素的固体酸催化剂的制备及其催化高酸值 废油脂生产生物柴油

以廉价的纤维素为原料,经不完全炭化和磺化制得含高密度（1.69mmol/g）SO3H基团的固体酸催化剂Cellulose-SO3H.结果表明,该催化剂适宜的制备条件为：在400oC炭化15h,再在150oC磺化15h.所得催化剂在油酸与甲醇的酯化反应中表现出明显高于其它几种典型固体酸催化剂（铌酸,Amberlyst-15,硫酸化氧化锆）的活性,同时还能高效地催化棕榈酸或硬脂酸以及高酸值废油脂（较多脂肪酸）与甲醇的酯化反应.在醇/油摩尔比为25,催化剂用量为10%（基于废油脂的质量）,于85°C反应10h的条件下,生物柴油收率约为95%,明显高于上述三种典型固体酸催化剂.连续使用30批次（每批次...

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Bibliographic Details
Published in催化学报 Vol. 32; no. 11; pp. 1755 - 1761
Main Author 娄文勇 蔡俊 段章群 宗敏华
Format Journal Article
LanguageChinese
Published 湖北工业大学发酵工程省部共建教育部重点实验室,湖北武汉430068%湖北工业大学发酵工程省部共建教育部重点实验室,湖北武汉,430068%华南理工大学轻工与食品学院,广东广州,510640 2011
华南理工大学轻工与食品学院,广东广州510640
Subjects
固体酸催化剂
废油脂
生物柴油
纤维素
酯化
废油脂
纤维素
固体酸催化剂
酯化
生物柴油
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ISSN0253-9837
1872-2067
DOI10.3724/SP.J.1088.2011.10711

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Summary:以廉价的纤维素为原料,经不完全炭化和磺化制得含高密度（1.69mmol/g）SO3H基团的固体酸催化剂Cellulose-SO3H.结果表明,该催化剂适宜的制备条件为：在400oC炭化15h,再在150oC磺化15h.所得催化剂在油酸与甲醇的酯化反应中表现出明显高于其它几种典型固体酸催化剂（铌酸,Amberlyst-15,硫酸化氧化锆）的活性,同时还能高效地催化棕榈酸或硬脂酸以及高酸值废油脂（较多脂肪酸）与甲醇的酯化反应.在醇/油摩尔比为25,催化剂用量为10%（基于废油脂的质量）,于85°C反应10h的条件下,生物柴油收率约为95%,明显高于上述三种典型固体酸催化剂.连续使用30批次（每批次10h）后,Cellulose-SO3H仍能保持初始催化活性的90%以上,表现出极好的操作稳定性.可见,所制Cellulose-SO3H催化剂在生物柴油领域具有较好的应用潜力.
Bibliography:LOU Wenyong, CAI Jun, DUAN Zhangqun, ZONG Minhua, College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 00, Guangdong, China Key Laboratory of Fermentation Engineering （Ministry of Education）, Hubei University of Technology, Wuhan 430068, Hubei, China
cellulose; solid acid catalyst; biodiesel; esterification; waste oil
21-1195/O6
A cheap cellulose-derived solid acid catalyst （Cellulose-SO3H）, containing SO3H groups （1.69 mmol/g）, was successfully prepared through sulfonation of incompletely carbonized cellulose. Various preparation variables exerted remarkable effects on the catalytic activity of the prepared catalyst, and the optimal preparation conditions were found as follows： carbonization at 400 oC for 15 h and subsequent sulfonation at 150 oC for 15 h. The resulting catalyst showed significantly higher activity for esterification of oleic acid with methanol than several typical solid acid catalysts （niobic acid, amberlyst-15, and sulfated zirconia）. The Cellulose-SO3H
ISSN:0253-9837
1872-2067
DOI:10.3724/SP.J.1088.2011.10711