稀土复合固体酸催化合成棕榈酸生物柴油的研究

doi:10.3969/j.issn.1673-5854.2014.06.005

生物质化学工程 ›› 2014, Vol. 48 ›› Issue (6): 25-29.doi: 10.3969/j.issn.1673-5854.2014.06.005

稀土复合固体酸催化合成棕榈酸生物柴油的研究

司展, 蒋剑春, 王奎, 徐俊明

中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏南京 210042

收稿日期:2014-05-02 出版日期:2014-11-30 发布日期:2014-12-10
通讯作者: 蒋剑春(1955-), 男, 研究员, 博士, 博士生导师, 主要从事生物质能源和炭材料的研究开发工作;E-mail:bio-energy@163.com. E-mail:bio-energy@163.com
作者简介:司展(1989-), 女, 辽宁营口人, 硕士生, 研究方向为生物质能源;E-mail:sizhan43@126.com
基金资助:
"十二五"国家科技支撑计划资助(2011BAD22B05);林业公益性行业科研专项经费资助(201204801)

Biodiesel Production from Palmitic Acid Esterificatin with Rare Earth Composite Solid Acid as Catalysts

SI Zhan, JIANG Jian-chun, WANG Kui, XU Jun-ming

Institute of Chemical Industry of Forestry Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key of Open Lab.of Forest Chemical Engineering; SFA, Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China

Received:2014-05-02 Online:2014-11-30 Published:2014-12-10

摘要/Abstract

摘要： 用溶胶凝胶法制备稀土复合固体酸催化剂SO₄^2-/TiO₂/Ce⁴⁺,将其用于棕榈酸与甲醇的加压酯化反应.考察了不同制备条件对催化剂性能的影响,并对其结构进行表征.结果表明,在Ce⁴⁺浓度0.05 mol/L、H₂SO₄浓度1.38 mol/L、煅烧温度450 ℃和煅烧时间3 h的制备条件下,催化剂活性最高.棕榈酸与甲醇的加压酯化反应最佳工艺条件为:醇酸物质的量之比10:1、反应温度110 ℃、反应时间30 min、催化剂用量3%,此时转化率可达到96.33%.催化剂在重复使用4次后,转化率仍在50%以上.

关键词: 固体酸, 稀土, 酯化, 生物柴油

Abstract: Solid acid catalyst modified with rare earth,SO₄^2-/TiO₂/Ce⁴⁺, was prepared by sol-gel method and used for the esterification of palmitic acid and methanol.The effects of different preparation conditions on the catalyst activity were investigated,and its structure was characterized.The results indicated that the highest catalyst activity was exhibited when Ce⁴⁺ concentration 0.05 mol/L,H₂SO₄ concentration 1.38 mol/L,calcination temperature 450 ℃ and calcination time 3 h.It was found that the optimum condition were molar ratio of methanol to palmic acid 10:1,reaction temperature 110 ℃,reaction time 30 min and catalyst amount 3%,respectively.The conversion of palmitic acid was 96.33% under these conditions.The conversion rate was still above 50% when the catalysts were reused for four times.

Key words: solid acid, rare earth, esterification, biodiesel

中图分类号:

TQ351

司展, 蒋剑春, 王奎, 徐俊明. 稀土复合固体酸催化合成棕榈酸生物柴油的研究[J]. 生物质化学工程, 2014, 48(6): 25-29.

SI Zhan, JIANG Jian-chun, WANG Kui, XU Jun-ming. Biodiesel Production from Palmitic Acid Esterificatin with Rare Earth Composite Solid Acid as Catalysts[J]. bce, 2014, 48(6): 25-29.

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稀土复合固体酸催化合成棕榈酸生物柴油的研究

Biodiesel Production from Palmitic Acid Esterificatin with Rare Earth Composite Solid Acid as Catalysts

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