Hydrogenolysis of glycerol to propanediols over heteropolyacids promoted AgCu/Al2O3 catalysts

被引：1

作者：

Zhu, Wei ^{[1
]}

Shen, Peng-Xin ^{[1
]}

Wang, Yuan ^{[1
]}

Cai, Fu-Feng ^{[1
]}

Xiao, Guo-Min ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing, Jiangsu, Peoples R China

来源：

CHEMICAL PAPERS | 2017年 / 71卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Glycerol; Hydrogenolysis; Propanediol; AgCu; HSiW; SELECTIVE HYDROGENOLYSIS; BIFUNCTIONAL CATALYSTS; PERFORMANCE; 1,2-PROPANEDIOL; OXIDE; 1,3-PROPANEDIOL; CU/AL2O3; GLUCOSE; SUPPORT; ACID;

D O I：

10.1007/s11696-017-0160-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Various amounts and different types of heteropolyacids promoted 5Ag15Cu/Al2O3 catalysts were prepared by impregnation method and analyzed through many techniques. The synthesized catalysts were evaluated for hydrogenolysis of glycerol to propanediols. The results demonstrated that heteropolyacids loading facilitated the reduction, promoted the dispersion, enhanced the acidity, and increased Broensted acid sites of the AgCu catalysts, which benefited the generation of 1,3-propanediol. Compared with phosphotungstic acid and phosphomolybdic acid, silicotungstic acid promoted AgCu catalyst had a better performance for 1,3-propanediol due to the better Cu dispersion and higher Broensted acidity. In addition, when the reaction was performed at 220 A degrees C under 3.5 MPa for 8 h, the chosen 5Ag15Cu-10HSiW/Al2O3 achieved a 69.6% glycerol conversion with 35.6% 1,2-propanediol selectivity and 21.5% 1,3-propanediol selectivity.

引用

页码：1645 / 1655

页数：11

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