Enabling tandem oxidation of benzene to benzenediol over integrated neighboring V-Cu oxides in mesoporous silica

Mengting Liu; Xuexue Dong; Zengjing Guo; Aihua Yuan; Shuying Gao; Fu Yang

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Enabling tandem oxidation of benzene to benzenediol over integrated neighboring V-Cu oxides in mesoporous silica

Full Length Article | Updated：2026-01-06

- Enabling tandem oxidation of benzene to benzenediol over integrated neighboring V-Cu oxides in mesoporous silica
- Chinese Journal of Chemical Engineering Vol. 55, Issue 3, Pages: 236-245(2023)
- Affiliations：
  
  1. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology,Zhenjiang,China,212003
  2. School of Chemistry and Chemical Engineering, Liaocheng University,Liaocheng,China,252000
  3. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University,Nanjing,China,210009
- Author bio：
- Funds：
- DOI：
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- Published：2023
- Accepted：
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Mengting Liu, Xuexue Dong, Zengjing Guo, Aihua Yuan, Shuying Gao, Fu Yang. Enabling tandem oxidation of benzene to benzenediol over integrated neighboring V-Cu oxides in mesoporous silica[J]. Chinese Journal of Chemical Engineering, 2023, 55(3): 236-245.
DOI：

Mengting Liu, Xuexue Dong, Zengjing Guo, Aihua Yuan, Shuying Gao, Fu Yang. Enabling tandem oxidation of benzene to benzenediol over integrated neighboring V-Cu oxides in mesoporous silica[J]. Chinese Journal of Chemical Engineering, 2023, 55(3): 236-245. DOI：

摘要

Abstract

The direct tandem oxidation synthesis of benzenediol from benzene could simplify or even avoid the separation and purification of reaction intermediates

which is promising but challenged because of the further required immediate consecutive activation of intermediate phenol. In this work

a synergistic benzene tandem-oxidation catalyst that V-Cu bimetallic oxides modified nanoporous silica (VCu-NS) was constructed

via

a facile assembly strategy which involves addictive negative anion citric acid mediating the intercalation of metal-citric acid chelate in mesopore of silica and subsequent thermal calcination inducing dual-metal active site formation. Such a tactic could make amorphous VO

species well covered on the surface of mesopore

and ultrafine copper oxide particles surrounded and neighbored by highly dispersed VO

with strong interplay in mesopore

which was comprehensively confirmed by various characterizations. Benefiting from the unique V-Cu neighboring effect

the desorption of formed phenol over the catalytic site might be restricted therefore easily further activated by the formed reactive oxidative species

3VCu-NS shows synergetic tandem-oxidation

catalytic activities for benzene towards benzenediol with a selectivity of 57%. The result allows optimal 3VCu-NS to be a promising catalyst for benzenediol synthesis from benzene.

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