The nature of the deactivation of hydrothermally stable Ni/SiO2-Al2O3 catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol

Haitao Li; Yin Zhang; Hongxi Zhang; Xiaoqin Qin; Yalin Xu; Ruifang Wu; Zheng Jiang; Yongxiang Zhao

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The nature of the deactivation of hydrothermally stable Ni/SiO₂-Al₂O₃ catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol

Updated：2026-01-06

- The nature of the deactivation of hydrothermally stable Ni/SiO₂-Al₂O₃ catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol
- The nature of the deactivation of hydrothermally stable Ni/SiO₂-Al₂O₃ catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol
- 中国化学工程学报（英文版） 2019年27卷第12期页码：2960-2967
- Affiliations：
  
  1. Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University,Taiyuan,China,030006
  2. Faculty of Engineering and the Environment, University of Southampton,Southampton,UK,SO17 1BJ
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- 纸质出版：2019
- Accepted：
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Haitao Li, Yin Zhang, Hongxi Zhang, 等. The nature of the deactivation of hydrothermally stable Ni/SiO₂-Al₂O₃ catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol[J]. 中国化学工程学报（英文版）, 2019,27(12):2960-2967.

-Al
Haitao Li, Yin Zhang, Hongxi Zhang, 等. The nature of the deactivation of hydrothermally stable Ni/SiO₂-Al₂O₃ catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol[J]. 中国化学工程学报（英文版）, 2019,27(12):2960-2967. DOI：

-Al DOI：

摘要

Abstract

The deactivation of Ni/SiO

-Al

catalyst in hydrogenation of crude 1

4-butanediol was investigated. During the operation time of 2140 h

the catalyst showed slow activity decay. Characterization results

for four spent catalysts used at different time

indicated that the main reason of the catalyst deactivation was the deposition of carbonaceous species that covered the active Ni and blocked mesopores of the catalyst. The TPO and SEM measurements revealed that the carbonaceous species included both oligomeric and polymeric species with high C/H ratio and showed sheet. Such carbonaceous species might be eliminated through either direct H

reduction or the combined oxidation-reduction methodologies.

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