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Promoting Intermediate Stabilization and Coupling for Dimethyl Carbonate Electrosynthesis.

Yuying Mi1, Yuanyuan Xue1, Yaqin Yan1

  • 1Laboratory of Advanced Materials, State Key Laboratory of Porous Materials for Separation and Conversion, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, China.

Small (Weinheim an Der Bergstrasse, Germany)
|March 31, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel Pd/PdO-r catalyst to efficiently convert methanol and CO into dimethyl carbonate (DMC). This strategy optimizes intermediate adsorption and coupling for valuable C1 resource conversion.

Keywords:
Pd catalystsdimethyl carbonate (DMC)electrocatalytic carbonylationheterointerfacesinterface engineering

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Area of Science:

  • Catalysis
  • Materials Science
  • Electrochemistry

Background:

  • Electrocatalytic conversion of C1 resources like methanol and CO into dimethyl carbonate (DMC) is crucial for sustainable chemical synthesis.
  • Controlled adsorption and coupling of key intermediates (CO and OCH3) remain a significant challenge in achieving efficient DMC production.

Purpose of the Study:

  • To develop a novel heterointerface engineering strategy for enhanced electrocatalytic coupling of methanol and CO.
  • To demonstrate the controlled adsorption and coupling of *CO and *OCH3 intermediates for dimethyl carbonate synthesis.

Main Methods:

  • Construction of a palladium and palladium oxide (Pd/PdO) heterostructure catalyst (Pd/PdO-r) with abundant interfaces.
  • Utilizing Pd0 sites for *CO stabilization and electrophilic Pd2+ sites for *OCH3 adsorption.
  • Investigating the role of heterointerfaces in lowering the C-O bond formation barrier.

Main Results:

  • The Pd/PdO-r catalyst effectively modulated intermediate adsorption and facilitated C-O bond formation.
  • Achieved a high Faradaic efficiency of 86% for DMC synthesis.
  • Demonstrated a high DMC yield rate of 252 µmol h-1 mgcat-1 in flow cells.

Conclusions:

  • The developed Pd/PdO-r heterostructure provides an effective electrocatalytic pathway for efficient DMC synthesis from C1 resources.
  • Heterointerface engineering is a promising approach to enhance intermediate adsorption and coupling for valuable multicarbon product formation.
  • This work offers insights into designing advanced catalysts for sustainable chemical conversions.