Hydrophobic Pd/Al<sub>2</sub>O<sub>3</sub> catalyst intensified nitrobenzene hydrogenation in flow

Zhang Hongda; Hu Jinyan; Bao Shuting; Su Shichao; Yang Weiyao; Sang Le

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Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow

Updated：2026-08-24

- Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow
- Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow
- 中国化学工程学报（英文） 2026年94卷第6期页码：92-101
- Affiliations：
  
  School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
- Author bio：
  
  Corresponding author. E-mail address: lesang@bit.edu.cn(L. Sang)
- Funds：
  
  supports of National Natural Science Foundation of China(22378020);Beijing Institute of Technology Research Fund Program for Young Scholars on this work
- DOI：
  中图分类号：
- 收稿：2025-09-13，
  
  修回：2026-01-11，
  
  录用：2026-01-16，
  
  网络首发：2026-02-14，
  
  纸质出版：2026-06
- Accepted：
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Zhang Hongda, Hu Jinyan, Bao Shuting, 等. Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow[J]. 中国化学工程学报（英文）, 2026,94(6):92-101.

Zhang Hongda, Hu Jinyan, Bao Shuting, et al. Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 92-101.
Zhang Hongda, Hu Jinyan, Bao Shuting, 等. Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow[J]. 中国化学工程学报（英文）, 2026,94(6):92-101. DOI：

Zhang Hongda, Hu Jinyan, Bao Shuting, et al. Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 92-101. DOI：

摘要

Abstract

Designing efficient catalysts and solvent system for the multiphase hydrogenation reaction is vital in continuous flow reactors. Herein

we prepare hydrophilic Pd/Al

and hydrophobic modified C

PA-Pd/Al

catalyst for nitrobenzene (NB) hydrogenation in micropacked bed reactors (μPBRs). By tuning the methanol-water volume ratio

reaction

temperature

reaction pressure

liquid and gas superficial velocity

the NB conversion and aniline (AN) yield are optimized. The highest NB conversion of 97.1% and AN yield 95.6% are obtained in μPBRs with hydrophobic C

PA-Pd/Al

at the reaction temperature of 90℃. The apparent kinetic model is developed in μPBRs with two types of catalysts

and activity energies of NB hydrogenation for Pd/Al

and C

PA-Pd/Al

are 7.944 kJ·mol

- 1

and 3.372 kJ·mol

- 1

respectively. It indicates that the catalytic efficiency of C

PA-Pd/Al

is better than that of Pd/Al

in the methanol-water mixed solvent in μPBRs. The value of TOF for the hydrophobic modified C

PA-Pd/Al

catalyst is twice compared with the hydrophilic Pd/Al

catalyst. The value of STY for μPBRs is higher than that of stirred tank reactors (STRs) and fixed bed reactors (FBRs).

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Hydrophobic Pd/Al2O3 catalyst intensified nitrobenzene hydrogenation in flow

Hydrophobic Pd/Al2O3 catalyst intensified nitrobenzene hydrogenation in flow

DOI：

摘要

Abstract

关键词

Keywords

references

Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow

Hydrophobic Pd/Al₂O₃ catalyst intensified nitrobenzene hydrogenation in flow