Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al<sub>2</sub>O<sub>3</sub> Catalysts

周志明; 李浔; 曾天鹰; 洪闻彬; 程振民; 袁渭康

doi:10.1016/S1004-9541(10)60235-2

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Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts

Updated：2026-01-06

- Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts
- Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts
- 中国化学工程学报（英文版） 2010年18卷第3期页码：384-390
- Affiliations：
  
  1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology,Shanghai,China,200237
  2. School of Chemistry and Biological Engineering, Changsha University of Science and Technology,Changsha,China,410077
- Author bio：
- Funds：
  
  Supported by the National High Technology Research and Development Program of China(2008AA05Z405);the National Natural Science Foundation of China(20706018);the Program for Changjiang Scholars and Innovative Research Team in University(IRT0721)
- DOI：10.1016/S1004-9541(10)60235-2
  中图分类号：
- 纸质出版：2010
- Accepted：
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周志明, 李浔, 曾天鹰, 等. Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts[J]. 中国化学工程学报（英文版）, 2010,18(3):384-390. DOI: 10.1016/S1004-9541(10)60235-2.

O
周志明, 李浔, 曾天鹰, 等. Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts[J]. 中国化学工程学报（英文版）, 2010,18(3):384-390. DOI: 10.1016/S1004-9541(10)60235-2. DOI：

O DOI： 10.1016/S1004-9541(10)60235-2.

摘要

Abstract

A series of Cu-ZnO-Al

catalysts with various metal compositions of Cu/Zn/Al were prepared by the co-precipitation method

and screened for glycerol hydrogenolysis to propylene glycol.The catalyst with a Cu/Zn/Al molar ratio of 1:1:0.5 exhibited the best performance for glycerol hydrogenolysis

and thus selected for kinetic investigation.Under elimination of external and internal diffusion limitation

kinetic experiments were performed in an isothermal fixed-bed reactor at a hydrogen pressure range of 3.0-5.0 MPa and a temperature range of 493-513 K. Based on a dehydration-hydrogenation two-step hydrogenolysis mechanism

a two-site Langmuir-Hinshelwood kinetic model taking into account competitive adsorption of glycerol

acetol and propylene glycol was proposed and successfully fitted to the experimental data.The average relative errors between observed and predicted outlet concentrations of glycerol and propylene glycol were 6.3% and 7.6%

respectively.The kinetic and adsorption parameters were estimated by using the fourth-order Runge-Kutta method together with the Rosenbrock algorithm.The activation energies for dehydration and hydrogenation reactions were 86.56 and 57.80 kJ·mol

-1

respectively.

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Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al2O3 Catalysts

Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al2O3 Catalysts

DOI：10.1016/S1004-9541(10)60235-2

摘要

Abstract

关键词

Keywords

references

Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts

Kinetics of Hydrogenolysis of Glycerol to Propylene Glycol over Cu-ZnO-Al₂O₃ Catalysts