Aqueous-Phase Hydrogenolysis of Glycerol to 1,3-propanediol Over Pt-H4SiW12O40/SiO2

• Published in: Catalysis letters Vol. 142; no. 2; pp. 267 - 274
• Main Authors: Zhu, Shanhui, Zhu, Yulei, Hao, Shunli, Chen, Lungang, Zhang, Bin, Li, Yongwang
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.02.2012; Springer; Springer Nature B.V
• Subjects: Catalysis; Catalysts; Chemistry; Chemistry and Materials Science; Exact sciences and technology; General and physical chemistry; Glycerol; Hydrogenolysis; Industrial Chemistry/Chemical Engineering; Organometallic Chemistry; Physical Chemistry; Silicon dioxide; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Glycerol; Silicotungstic acid; Hydrogenolysis; 1,3-propanediol; Binary compound; Hydrogen; Acidic site; Acidity; Bronsted site; Conversion; Silica; Velocity; Dispersion; Heterogeneous catalysis; Brönsted acid; Acids; Silicon oxides; Propanediol; Catalyst
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-011-0757-1

Hydrogenolysis of glycerol to 1,3-propanediol in aqueous-phase was investigated over Pt-H 4 SiW 12 O 40 /SiO 2 bi-functional catalysts with different H 4 SiW 12 O 40 (HSiW) loading. Among them, Pt-15HSiW/SiO 2 showed superior performance due to the good dispersion of Pt and appropriate acidity. It is found that Brønsted acid sites facilitate to produce 1,3-PDO selectively confirmed by Py-IR. The effects of weight hourly space velocity, reaction temperature and hydrogen pressure were also examined. The optimized Pt-HSiW/SiO 2 catalyst showed a 31.4% yield of 1,3-propanediol with glycerol conversion of 81.2% at 200 °C and 6 MPa. Graphical Abstract .