高酸值麻疯树籽油制备生物柴油的杂多酸催化预酯化研究.pdf

2014年第39卷第2期
中国油脂
生
高酸值麻疯树將油制备生物柴油的杂多酸
催化预酯化研究
张琳叶,李志业,魏光涛2,范超云,黄汉能,王磊,刘晓玲,李仲民
(1.广西大学化学化工学院,南宁53004;:2.广西る化资源加工及过程强化技术重点实验室,南宁S3000
摘要:以探索生物柴油制备中预酯化的绿色技术为目的,研究了杂多酸H1PW2O催化预酯化高酸
值麻瘋树将油。以单因素实验考察了酯化反应中各因素对酯化率的影响,得到H13PW120。催化预
番化的最佳条件为:反应温度65℃,反应时间3h,醇油物质的量比9:1,催化剂H3PW120。用量
1%。在最佳条件下,麻疯树耔油的酯化率为96.1%,酸值(KOH)降至0.61mgy/g。提出了高酸值
麻疯樹将油制备生物柴油中杂多酸催化预酯化的エ艺路线,分析显示エ艺具有一定优势
关键词:杂多酸;预酯化;麻疯树籽油;生物柴油
中分类号:T645;TQ426文献标志码:A文章编号:1003-7969(2014)02-0063-04
Pre-esterification of Jatropha curcas Lseed oil with high acid value
catalyzed by heteropolyacid for biodiesel production
ZILANG Linye LI Zhiye WEI Guangtao", FAN Chaoyun
HUANG Hanneng, WANG Lei, LIU Xiaoling L Zhongmin
(1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
2. Guangi Key Laboratory of Petrochemical Resource Processing and Process
Intensification Technology, Nanning 530004, China
Abstract: The reesterification of Jatropha cureas L, seed oil with high acid value catalyzed by hetero
polyacid H PW 2O was studied to explore the green lechnology of pre-esterification for biodiesel produc-
tion. The effects of different factors on esterification ae were investigaed by single factor experime
and the optimal pre-esterification conditions were obtained as follows: H PW O o dosage 1%, reaction
temperature 65, reaction time 3 h, molar ratio of methanol to oil 9: 1. Under the optimal conditions
the esterification rate of Jatropha curcas L. seed ail reached 96. 1, and the acid value decreased to
0.6 mgkoh/g Moreover, the process f pre-esterimicaton of op cweas L.seed oil with high acid
value catalyzed by heteropolyacid for biodiesel production was putforward, and the analysis showed that
the process had some advantages
Key words heteropolyacid; pre-esterification; Jatropha cureas I. seed oil; biodiesel
麻瘋树是一种落叶小乔木或灌木,根系发达,生长迅速,生命力强,不但人工造林容易,而且天然更
新能力强,可以在干旱、贫瘠、退化的土壤中种植生
收稿日期;2013-05-10
长。麻瘋树种仁含油率高达50%~80%,且1棵成
基金项目:高等学校博士学科点专项科研基金资助頭目熟的麻疯树1年结种3次,每次可产10~15kg种
(2010100西自然科学基金资助项目子,因此麻疯树耔油是一种重要的制备生物柴油的
(2011 CXNSFR18017、2013 CXNSFAA019296);广西大学大
非食用植物油-。麻疯树将油中含有大量的游离
学生创新创业训练计划项目(1301054)
作者介:联球叶(91),女,讲,士,主要从事色化脂肪酸“,其酸值(KOH)为10~15myge°"。
学与可再生资源研究(E-mail)yezi@gxu,edhu.cn
在碱催化交换制备生物柴油中为了避免游离脂肪
通信作者:魏光涛,教授,博士(E- mail)gtwei(@gru,ecdu.m。酸对碱催化剂的失活影响,通常需要严格控制麻疯
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