固体酸催化富烃燃料-甲醇酯化反应.pdf

石油化工
PETROCHEMICAL TECHNOLOGY
2014年第43卷第9期
固体酸催化富烃燃料一甲醇酯化反应
张爱华,肖志红12,张良波2,贾维肖2,林琳,李昌珠2
(1.湖南省林业科学院,湖南长沙410004
2.湖南省生物柴油工程技术研究中心,湖南长沙410004)
摘要]以对甲基苯磺酸为催化剂,催化光皮树油半成品富烃燃料与甲醇进行酯化反应,考察了甲醇与半成品富烃燃料的摩
尔比(简称醇油比)、反应温度、反应时间、催化剂用量等对寫烃燃料酸度的影响,同时对時化前后的试样进行了PTIR表征
并对酯化后的富烃燃料进行了GC-MS分析。得到的适宜反应条件为:醇油比10:1、反应温度80℃、反应时间110min、催化
剂对甲基苯磺酸用量为半成品富烃燃料油质量的0.20%;在此条件下,富烃燃料的酸度(以100mL试样消耗KOH的质量计)由
酯化前的3400mg降至酯化后的5.95mg。FTR表征和GC-MS分析结果表明,酯化后富烃燃料中的酯类成分含量明显增加,酯
化后的富烃燃料较光皮树油生物柴油具有更低的酸值和更高的热值。
[关键词]光皮树油;寓烃燃料;甲醇;固体酸催化剂
[文章编号]1000-8144(2014)09-1020-04
「中图分类号]TQ645.9
文献标志码]A
Esterification of Hydrocarbon-rich Fuel with Methanol over Solid Acid Catalyst
Zhang Aihua, Xiao Zhihong i, Zhang Liangbo Jia Weixiao, Lin Lin, Li Changzhu a
(1. Hunan Academy of Forestry, Changsha Hunan 410004, China;
2. Hunan Engineering Research Center of Biodiesel, Changsha Hunan 410004, China)
I Abstract J The esterification of cornus-wisoniana oil hydrocarbon-rich fuel as a semi-finished
product with methanol was carried out over the methyl benzene sulfonic acid catalyst. The effects
of the mole ratio of methanol to the hydrocarbon-rich fuel, reaction temperature, reaction time and
catalyst dosage on the acidity of the product were investigated. The samples before and after the
esterification were characterized by means of FTTR and GC-MS. The acidity of the hydrocarbon-rich
fuel was lowered from 3 400 mg(based on the mass of KOH consumed by 100 ML samples )to 5.95 mg
through the esterification under the suitable experimental conditions of the mole ratio of methanol to
the hydrocarbon-rich fuel 10: I, reaction temperature 80 C, reaction time 110 min and catalyst dosage
0.20%(based on the mass of the hydrocarbon-rich fuel).The results of FTIR and GC-MS showed
that the ester content in the hydrocarbon-rich fuel increased significantly after the esterification, and
the hydrocarbon-rich fuel after the esterification had lower acid value and higher heating value than the
hydrocarbon-rich fuel before the esterification
L Keywords J cornus-wisoniana oil; hydrocarbon-rich fuel; methanol; solid acid catalyst
生物质原料具有分布广、可持续、可存储
机上直接使用。针对光皮树油半成品烃燃料(简
储量大和碳平衡等优点,但生物质的能量密度和燃称半成品富烃燃料)中游离有机羧酸品种多、含量
烧效率低,需要通过热化学或生物技术将其转化后
加以利用。目前,国内外利用生物质裂解制备富烃[收稿日期2014-04-18;[修改稿日期]2014-06-30。
燃料的方法主要有催化加氢法以、生物油蒸气催化『作者筒介」张爱年(198-)?男,河北省石家庄市人,硕土,助
裂解法13、乳化法451、水蒸气重整法0?等,但
理研究员,电话0731-855874,电邮 zhanghua90 asina. com。联
系人:李昌珠,电话13808485893,电邮lichangzhui20]3aaliyun.com
这些工艺技术含量高、操作复杂,同时由于直接获
「基金项目]湖南省自然科学基金项目(14.2141);国家林业局
得的半成品中含有较多的游离酸,因此不能在发动公益项月(201204801)。