强酸树脂催化合成乙醛酸甲酯  

Catalyticsynthesis of methyl glyoxylate over strong acidic resin

作　　者：龚海燕[1] 孙凤侠[1] 刘俊涛[1] Gong Haiyan;Sun fengxia;Liu Juntao(State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,SINOPEC Shanghai Research Institute of Petrochemical Technology,Shanghai 201208,China)

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院绿色化工与工业催化国家重点实验室,上海201208

出　　处：《工业催化》2021年第3期77-80,共4页Industrial Catalysis

摘　　要：以乙醛酸和甲醇为原料,采用强酸性离子交换树脂为催化剂合成乙醛酸甲酯。考察反应时间、反应温度、醇酸物质的量比和催化剂用量等对反应性能的影响。结果表明,在反应温度55℃、醇酸物质的量比6∶1~8∶1、催化剂用量为乙醛酸质量5%和反应时间1.5 h条件下,乙醛酸甲酯收率最高达74.8%。催化剂重复使用7次,反应结果基本一致,催化剂稳定性良好。Methyl glyoxylate was produced from glyoxylic acid and methanol in the presence of strong acidic resin as catalyst.Influence of reaction time,temperature,alcohol-acid mole ratio,and catalyst loading was investigated.The results show that the yield of methyl glyoxylate could achieve as high as 74.8%under the optimal conditions of reaction temperature 55℃,alcohol-acid mole ratio 6∶1~8∶1,the amount of catalyst was 5%of the mass of glyoxylic acid,and reaction time 1.5 h.The fluctuation of experimental results was small after seven recycles of the catalyst,which means the catalyst exhibited good stability.

关 键 词：精细化学工程 乙醛酸 乙醛酸甲酯 强酸性树脂 酯化 

分 类 号：TQ426.94[化学工程] O643.36[理学—物理化学]