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Updated: Aug 7, 2026
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Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Reaction-induced dynamic evolution of PtIn/SiO2 catalyst for propane dehydrogenation
Tao Zhou1, Han Yan1, Wenjie Li2
1Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, P. R. China.
Nature Communications
|June 3, 2025
Summary
Propane dehydrogenation (PDH) catalysts evolve dynamically. Propylene product triggers PtIn alloy clusters to form stable Pt3In intermetallic, enhancing selectivity and stability.
Area of Science:
- Catalysis Science and Engineering
- Materials Science
- Surface Chemistry
Background:
- Understanding dynamic catalyst evolution is key for rational catalyst design.
- Structure-performance relationships in heterogeneous catalysis remain challenging to elucidate.
- Propane dehydrogenation (PDH) is an important industrial process.
Purpose of the Study:
- To investigate the dynamic evolution of PtIn alloy catalysts during PDH.
- To understand how product molecules influence catalyst structure and performance.
- To reveal atomic-scale mechanisms governing catalyst stability and selectivity.
Main Methods:
- Fabrication of a PtIn1.0/SiO2 catalyst with specific cluster and interfacial species.
- In-situ monitoring of catalyst evolution during the PDH reaction.
- Characterization of the evolved catalyst structure and composition.
Main Results:
- PtIn alloy clusters evolve into Pt3In intermetallic nanoparticles (~1.3 nm) under PDH conditions.
- Propylene product induces the removal of an In0 overlayer, exposing active Pt sites.
- The evolved Pt3In catalyst achieves high C3H6 productivity (145 mol gPt-1 h-1).
- Alloyed In0 enhances propylene selectivity, while interfacial In3+ prevents particle aggregation.
Conclusions:
- Product molecules play a critical role in shaping active site evolution at the atomic scale.
- The dynamic transformation of PtIn to Pt3In is crucial for high performance in PDH.
- Catalyst design should consider in-situ evolution driven by reaction products for enhanced stability and selectivity.
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