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Heterogeneous Catalysis01:22

Heterogeneous Catalysis

139
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
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Related Experiment Video

Updated: Apr 29, 2026

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
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Statistical Sampling-Driven Design for Supported Bimetallic Nanocatalysts for CO2 Reduction.

Ziwei Wang1,2,3, Jiawei Bai1, Jieqiong Ding4

  • 1State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, People's Republic of China.

Angewandte Chemie (International Ed. in English)
|October 4, 2025
PubMed
Summary

This study introduces a new method for designing bimetallic nanocatalysts by statistically sampling alloy formation. This approach enables precise control over alloyed or phase-separated structures for enhanced CO2 reduction.

Keywords:
Active sitesBimetallic nanocatalystsCO2 reductionCatalytic mechanismGas–solid nanoreactor

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Catalysis

Background:

  • Tailoring supported bimetals into alloyed or phase-separated structures is crucial but challenging due to support interferences.
  • Conventional methods rely on trial-and-error, lacking efficiency and generality.

Purpose of the Study:

  • To present a rational and systematic design strategy for bimetallic nanocatalysts (NCs).
  • To overcome limitations in controlling supported bimetal structures using statistical sampling and advanced simulation techniques.

Main Methods:

  • Utilized a metadynamics-based gas-solid nanoreactor approach for statistical sampling of alloy formation.
  • Employed a proof-of-concept system using metal oxide-supported PdAu coupling for CO2 reduction.
  • Integrated theoretical simulations with experimental validation.

Main Results:

  • Successfully predicted and realized alloy formation or phase separation of supported PdAu NCs.
  • PdAu alloys on CeO2 enhanced CO2 hydrogenation to CO via a formate pathway.
  • Phase-separated PdAu on TiO2 improved formic acid production efficiency through enhanced CO2 activation via a bicarbonate pathway.

Conclusions:

  • Statistical sampling provides a general framework for the rational design of advanced bimetallic NCs.
  • The developed strategy enables precise control over bimetal structures for tailored catalytic performance.