Hydrogenolysis of glycerol to 1,3-propanediol over bifunctional catalysts containing Pt and heteropolyacids

被引：130

作者：

Zhu, Shanhui ^{[1
,2
]}

Qiu, Yanan ^{[3
]}

Zhu, Yulei ^{[1
,4
]}

Hao, Shunli ^{[4
]}

Zheng, Hongyan ^{[4
]}

Li, Yongwang ^{[1
,4
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

[3] Inst Sci & Technol Informat Shanxi, Taiyuan 030001, Peoples R China

[4] Synfuels China Co Ltd, Taiyuan 030032, Peoples R China

来源：

CATALYSIS TODAY | 2013年 / 212卷

关键词：

Glycerol; Hydrogenolysis; 1,3-Propanediol; Heteropolyacids; GAS-PHASE DEHYDRATION; PROPYLENE-GLYCOL; ACID; ACROLEIN; CONVERSION; BIOMASS; SITES;

D O I：

10.1016/j.cattod.2012.09.011

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hydrogenolysis of glycerol to 1,3-propanediol was conducted over zirconia supported bifunctional catalysts containing Pt and heteropolyacids using H4SiW12O40 (HSiW), H3PW12O40 (HPW) and H3PMo12O40 (HPMo) as active compounds. Pt/ZrO2 was also examined for comparison. The as-prepared catalysts were characterized by BET, CO chemisorption, XRD, Raman spectra, NH3-TPD and FTIR of adsorbed pyridine. Compared with Pt/ZrO2, heteropolyacids modified Pt/ZrO2 catalysts showed higher acidity and better catalytic performance of glycerol hydrogenolysis to 1,3-propanediol. Among them, Pt-HSiW/ZrO2 exhibited superior performance due to the high Bronsted acid sites and good thermal stability. Independent of the heteropolyacid type, the concentration of Bronsted acid sites appeared as a key to the selective formation of 1,3-propanediol from glycerol hydrogenolysis, whereas the concentration of Lewis acid sites was related to the formation of 1,2-propanediol. We also investigated the reaction network and proposed a possible reaction pathway. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：120 / 126

页数：7

共 42 条

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