Design and fabrication of choline-functionalized shaped polymer catalysts for efficient catalytic synthesis of <italic style="font-style: italic">sec</italic>-butanol

Cui Miaomiao; Hong Peixin; Cai Yaxin; Lin Yongsheng; Chen Xiaoyan; Qiu Ting; Chen Jie

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Design and fabrication of choline-functionalized shaped polymer catalysts for efficient catalytic synthesis of sec-butanol

Updated：2026-08-24

- Design and fabrication of choline-functionalized shaped polymer catalysts for efficient catalytic synthesis of sec-butanol
- Chinese Journal of Chemical Engineering Vol. 94, Issue 6, Pages: 138-146(2026)
- Affiliations：
  
  State Key Laboratory of Green and Efficient Development of Phosphorus Resources, Engineering Research Center of Reactive Distillation, Fujian Province University, College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  Qingyuan Innovation Laboratory, Quanzhou 362801, China
- Author bio：
  
  Corresponding authors. E-mail addresses: cxyzzs@outlook.com(X. Chen)
  tingqiu@fzu.edu.cn(T. Qiu)
- Funds：
- DOI：
  CLC：
- Received：11 November 2025，
  
  Revised：2026-01-07，
  
  Accepted：08 January 2026，
  
  Online First：14 February 2026，
  
  Published：2026-06
- Accepted：
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Cui Miaomiao, Hong Peixin, Cai Yaxin, et al. Design and fabrication of choline-functionalized shaped polymer catalysts for efficient catalytic synthesis of sec-butanol[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 138-146.
DOI：

Cui Miaomiao, Hong Peixin, Cai Yaxin, et al. Design and fabrication of choline-functionalized shaped polymer catalysts for efficient catalytic synthesis of sec-butanol[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 138-146. DOI：

摘要

Abstract

Sec

-butanol (SBA) is an important industrial medium-polar solvent

mainly used as methyl ethyl ketone precursor and in coatings

fuels

fine chemicals. Transesterification is its dominant synthesis route for economical feedstocks and easy downstream separation. However

industrial homogeneous catalysts suffer from separation difficulties

equipment corrosion

and poor continuous operability

and heterogeneous catalysts often exhibit relatively low catalytic activity. To balance catalytic activity and industrial application

a heterogeneous catalyst was firstly prepared by anchoring choline-based ionic liquids on swellable Ps-Cl (optimized swelling enhanced active site accessibility). Then

choline-functionalized supported shaped catalyst (Ps-Ch[IM

]

) was obtained

via

quaternization of macroporous styrene-based polymers with

′

-dimethylethanolamine (DMEA) and ion exchange with imidazolide anion ([IM

]

-). Under reaction temperature of 60℃

alcohol-to-ester molar ratio 5:1

catalyst dosage 5% (mass) and reaction time 240 min

Ps-Ch[IM

]

achieved 26.60%

sec

-butyl acetate (SBAC) conversion

surpassing reported literature results. DFT calculation and

situ

DRIFTS confirmed that Ps-Ch[IM

]

activates methanol (MeOH)

via

[IM

]

-and SBAC

via

the OH group in DMEA; subsequently

O*attacks the C═O bond in SBAC and combines with CH

CO*to form MA

while the proton combines with*OCH(CH

)CH

to yield the target product SBA. Moreover

Ps-Ch[IM

]

shown stable performance

in continuous fixed-bed reaction with the yield of 20.86% after 1800 min

indicates industrial application potential.

关键词

Keywords

references

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Design and fabrication of choline-functionalized shaped polymer catalysts for efficient catalytic synthesis of sec-butanol

DOI：

摘要

Abstract

关键词

Keywords

references