首页|Grubbs催化剂催化油酸甲酯与乙烯复分解反应

Grubbs催化剂催化油酸甲酯与乙烯复分解反应

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以生物质油酸甲酯(MO)作原料,与乙烯进行交叉复分解反应,可同时制备1-癸烯和9-癸烯酸甲酯.首先评估了 3种常用的烯烃复分解催化剂对体系的影响,筛选出了 Grubbs Ⅰ代催化剂为最佳催化剂,以MO的转化率和1-癸烯、9-癸烯酸甲酯的产率以及选择性为评价指标对Grubbs Ⅰ代催化剂的工艺条件进行探索,结果显示:溶剂为甲苯,MO浓度0.1 mol/L,温度40℃、乙烯压力0.2 MPa,反应时间2 h,催化剂用量为MO的1%(摩尔分数)时,得到MO转化率为97.4%,1-癸烯的产率和选择性分别为97.4%和100%,9-癸烯酸甲酯的产率和选择性分别为76.4%和78.4%.Grubbs Ⅱ作催化剂的较佳工艺条件为溶剂为甲苯,MO浓度0.1 mol/L,乙烯压力0.5 MPa,温度40 ℃,反应时间1 h,催化剂用量为MO的0.5%,该条件下1-癸烯产率达到76.4%,9-癸烯酸甲酯产率达80.1%,MO转化率为92.7%.
Grubbs Catalyst Catalyzes the Complex Decomposition of Methyl Oleate and Ethylene
Using biomass methyl biooleate(MO)as raw material,1-decene and methyl 9-decenoate could be simultaneously prepared by cross-metathesis reaction with ethylene.Firstly,the effects of three commonly used olefin metathesis catalysts on the system were evaluated,and Grubbs 1 was selected as the best catalyst.The conversion rate of methyl oleate and the yield of 1-decene and methyl 9-decenoate were taken as evaluation indexes to explore the process conditions of Grubbs I catalyst.The results showed that when the temperature was 40 ℃,the ethylene pressure was 0.2 MPa,the reaction time was 2 h,the catalyst dosage was 1%of methyl oleate,the solvent was toluene,and the concentration was 0.1 mol/L,the conversion rate of methyl oleate was 97.4%,the yield and selectivity of 1-decene were 97.4%and 100%,respectively,and the yield and selectivity of methyl 9-decenoate were 76.4%and 78.4%,respectively.Then,the process conditions of Grubbs Ⅱ catalyst were explored.When ethylene pressure was 0.5 MPa,temperature was 40 ℃,reaction time was 1 h,and catalyst dosage was 0.5%of methyl oleate,the yield of 1-decene reached 76.4%,the yield of methyl 9-decenoate was 80.1%,and the conversion rate was 92.7%.

Grubbs catalystbiomass1-decenemethyl 9-decenoate

程键、李世文、马占芳、李化毅

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中国科学院化学研究所,北京 100080

首都师范大学化学系,北京 100048

江苏科技大学材料科学与工程学院,江苏镇江 212100

Grubbs催化剂 生物质 1-癸烯 9-癸烯酸甲酯

2024

生物质化学工程
中国林业科学研究院林产化学工业研究所

生物质化学工程

CSTPCD
影响因子:0.622
ISSN:1673-5854
年,卷(期):2024.58(1)
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