氧化镁非均相催化合成3-巯基丙酸  

Heterogeneous catalytic synthesis of 3-mercaptopropionic acid by homemade magnesium oxide catalyst

作　　者：黄军左[1] 周英[1] 马玉刚[1] 

机构地区：[1]广东石油化工学院,广东茂名525000

出　　处：《工业催化》2015年第12期1017-1021,共5页Industrial Catalysis

摘　　要：以1,4-二氧六环为溶剂,丙烯酸和硫化氢在自制氧化镁催化下合成3-巯基丙酸,产物经XRD、GC-MS和IR确证。合成3-巯基丙酸的适宜条件为:1,4-二氧六环为溶剂,反应温度80℃,H2S压力0.3 MPa,n(催化剂)∶n(丙烯酸)=0.2∶1,V(1,4-二氧六环)∶V(丙烯酸)=5∶0.2,反应时间5 h。在此条件下,丙烯酸转化率为98.8%,3-巯基丙酸选择性为36.2%,3-巯基丙酸收率为35.6%。Using 1,4-dioxane as the solvent, and acrylic acid and hydrogen sulfide as the raw materials, 3-mereaptopropionie acid was synthesized over homemade magnesium oxide catalyst. The product of 3-mercaptopropionic acid synthesis was analyzed by XRD, IR and GC-MS. The results showed that acrylic acid conversion of 98.8%, the selectivity to 3-mercaptopropionic acid of 36.2% and 3-mercaptopropionic acid yield of 35.6% were obtained under the optimum condition as follows：l ,4-dioxane as the solvent, reaction temperature 80 ℃, hydrogen sulfide pressure 0.3 MPa, n （ magnesium oxide） ： n （ acrylic acid） = 0.2： 1, V（ 1,4-dioxane） ： V（aerylic acid） =5：0.2 ,and reaction time 5 h.

关 键 词：精细化学工程 非均相催化 3-巯基丙酸 氧化镁 硫化氢 丙烯酸 

分 类 号：O643.36[理学—物理化学] TQ225.27[理学—化学]