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Design of Potassium/Cesium Dual‐Alkali Catalysts and Reaction Process Optimization for Decarbonylation of Dimethyl Oxalate to Dimethyl Carbonate.

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Title: Design of Potassium/Cesium Dual‐Alkali Catalysts and Reaction Process Optimization for Decarbonylation of Dimethyl Oxalate to Dimethyl Carbonate.
Authors: Wang, Jingyan1,2 (AUTHOR), Wang, Ruyang3 (AUTHOR), Gong, Xiaoyu3 (AUTHOR), Cao, Heng1 (AUTHOR) hengcao@ustc.edu.cn, Ma, Peiyu1,4 (AUTHOR) pyuma@ustc.edu.cn, Luo, Lei3 (AUTHOR), Xiu, Yikun2 (AUTHOR), Bao, Jun1 (AUTHOR) baoj@ustc.edu.cn
Source: ChemCatChem. Jul2026, Vol. 18 Issue 14, p1-9. 9p.
Subjects: Catalysts, Continuous processing, Process optimization, Carbonates, Chemical reactors, Decarbonylation, Esters
Abstract: Dimethyl carbonate (DMC) is a versatile green chemical. However, traditional synthesis routes are often hindered by toxicity, equilibrium constraints, and equipment corrosion. The decarbonylation of dimethyl oxalate (DMO) offers an atom‐economical alternative, though its industrial viability hinges on developing catalysts that balance activity, stability, and cost. In this study, we report a series of carbon‐supported K/Cs‐based catalysts for DMO decarbonylation. Through systematic characterization, the 7%Cs–2%K/C catalyst calcined at 250°C was identified as the optimal formulation. Notably, while static slurry‐bed reactor tests showed performance degradation over successive cycles, the transition to a custom‐designed continuous slurry‐bed reactor system substantially improved operational stability. In this continuous configuration, the catalyst maintained an average DMO conversion of 96.05% and a DMC mass yield of 93.67% during a 204‐h stability test. Furthermore, after scaling up the 250°C–7%Cs–2%K/C catalyst and continuous slurry‐bed reaction process to the pilot‐plant scale, the system still maintained excellent catalytic efficiency and stability. This work integrates catalyst design with process engineering, providing a viable and scalable strategy for the industrial‐scale production of DMC. [ABSTRACT FROM AUTHOR]
Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Design of Potassium/Cesium Dual‐Alkali Catalysts and Reaction Process Optimization for Decarbonylation of Dimethyl Oxalate to Dimethyl Carbonate.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Jingyan%22">Wang, Jingyan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Ruyang%22">Wang, Ruyang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gong%2C+Xiaoyu%22">Gong, Xiaoyu</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Heng%22">Cao, Heng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hengcao@ustc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Peiyu%22">Ma, Peiyu</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> pyuma@ustc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Lei%22">Luo, Lei</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiu%2C+Yikun%22">Xiu, Yikun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bao%2C+Jun%22">Bao, Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> baoj@ustc.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22ChemCatChem%22">ChemCatChem</searchLink>. Jul2026, Vol. 18 Issue 14, p1-9. 9p.
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  Data: Dimethyl carbonate (DMC) is a versatile green chemical. However, traditional synthesis routes are often hindered by toxicity, equilibrium constraints, and equipment corrosion. The decarbonylation of dimethyl oxalate (DMO) offers an atom‐economical alternative, though its industrial viability hinges on developing catalysts that balance activity, stability, and cost. In this study, we report a series of carbon‐supported K/Cs‐based catalysts for DMO decarbonylation. Through systematic characterization, the 7%Cs–2%K/C catalyst calcined at 250°C was identified as the optimal formulation. Notably, while static slurry‐bed reactor tests showed performance degradation over successive cycles, the transition to a custom‐designed continuous slurry‐bed reactor system substantially improved operational stability. In this continuous configuration, the catalyst maintained an average DMO conversion of 96.05% and a DMC mass yield of 93.67% during a 204‐h stability test. Furthermore, after scaling up the 250°C–7%Cs–2%K/C catalyst and continuous slurry‐bed reaction process to the pilot‐plant scale, the system still maintained excellent catalytic efficiency and stability. This work integrates catalyst design with process engineering, providing a viable and scalable strategy for the industrial‐scale production of DMC. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/cctc.70957
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        Text: English
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        PageCount: 9
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      – SubjectFull: Catalysts
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      – SubjectFull: Continuous processing
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      – SubjectFull: Process optimization
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      – SubjectFull: Carbonates
        Type: general
      – SubjectFull: Chemical reactors
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      – SubjectFull: Decarbonylation
        Type: general
      – SubjectFull: Esters
        Type: general
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      – TitleFull: Design of Potassium/Cesium Dual‐Alkali Catalysts and Reaction Process Optimization for Decarbonylation of Dimethyl Oxalate to Dimethyl Carbonate.
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            NameFull: Wang, Jingyan
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              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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