Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO<sub>2</sub> catalysts

ZHOU Wei; ZHAO Yujun; MA Xinbin

doi:10.11949/j.issn.0438-1157.20150812

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Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO₂ catalysts

更新时间：2025-12-10

- Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO₂ catalysts
- CIESC Journal Issue 8, Pages: 2999-3006(2015)
- 作者机构：
  
  天津大学化工学院, 天津大学化工协同创新中心,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150812
  CLC： 643.36TQ223
- Online First：05 August 2015，
  
  Published：05 August 2015
- 稿件说明：
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ZHOU Wei, ZHAO Yujun, MA Xinbin. Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO₂ catalysts[J]. CIESC Journal, 2015, (8): 2999-3006. DOI: 10.11949/j.issn.0438-1157.20150812.
DOI：

ZHOU Wei, ZHAO Yujun, MA Xinbin. Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO₂ catalysts[J]. CIESC Journal, 2015, (8): 2999-3006. DOI: 10.11949/j.issn.0438-1157.20150812. DOI：

摘要

采用蒸氨法制备了不同Cu负载量的Cu/SiO2催化剂

并在连续固定床上催化甘油氢解。通过氮气物理吸附、X射线衍射、透射电镜、氧化亚氮-氢气滴定等手段对催化剂进行了表征。结果表明制备过程中形成的层状硅酸铜使催化剂具有大比表面积、较高的铜分散度以及较强的金属载体相互作用

因而在甘油氢解反应中表现出较好的时空收率和稳定性。此外

研究发现水对催化剂稳定性具有负面作用

而低转化率的情况下催化剂表面冗余的甘油可能是导致催化活性降低的一个重要因素。

Abstract

Cu/SiO2 catalysts with different Cu loading were prepared by an ammonia-evaporation method for the glycerol hydrogenolysis in a fixed-bed reactor. The catalysts were characterized by nitrogen adsorption desorption

X-ray powder diffraction

transmission electron microscope

and N2O-H2 titration. It was found that the copper phyllosilicate phase was formed during the preparation of the Cu/SiO2 catalysts. The copper phyllosilicate phase is considered as the dominated contribution to the special characters of the catalyst

such as large surface area

high Cu dispersion as well as strong metal support interactions. As a result

a significant high space-time yield of 4.5 g·g-1·h-1 for 1

2-propanediol and rarely good stability were achieved in the hydrogenolysis of glycerol. Moreover

the strongly adsorbed glycerol at the condition of lower conversion was observed to be one of the important reasons for Cu particle growth

and this negative effect was more remarkable than that of water.

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Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO2 catalysts

DOI：10.11949/j.issn.0438-1157.20150812

摘要

Abstract

关键词

Keywords

references

Continuous hydrogenolysis of glycerol to 1,2-propanediol on highly active Cu/SiO₂ catalysts