Supported cobalt-promoted platinum bimetallic nanoparticles – a thermal study

Forfattere

  • Shailesh Kumar Jain Galgotias Educational Institutions Greater Noida

Nøgleord:

Low-temperature fuel cells, TGA, DSC, Bimetallic nanoparticles, CO oxidation, TPR

Resumé

The Co-promoted Pt-based bimetallic catalysts were prepared using surface organometallic method (SOMC), to obtain catalysts with cobalt to platinum surface atomic ratio of 1:2 and 1:1. Temperature-programmed reduction (TPR) profiles showed two distinct temperature regions for hydrogen uptake both by the parent 5% Pt/Al2O3 and the Co-promoted catalysts. The shift in peak maxima in the case of promoted catalysts to higher temperatures has been interpreted as a result of formation of interfacial sites responsible for improved performance of the bimetallic catalysts. Thermogravimetric and calorimetric (DSC) studies, performed in oxidizing and reducing atmospheres supported the TPR results and confirmed the stability of catalysts up to 600°C.Keywords: Low-temperature fuel cells, TGA, DSC, Bimetallic nanoparticles, CO oxidation, TPR

Forfatterbiografi

  • Shailesh Kumar Jain, Galgotias Educational Institutions Greater Noida
    Currently working as an Assistant Professor (Applied Chemistry) at Galgotias College of Engg & Tehcnology, Greater Noida.Ph.D. (Chemistry) - The Open University (England) - 2004[in collaboration with Johnson Matthey plc, UK)M.Sc. (Chemistry) - IIT Kanpur - 2000B.Sc. (Hons.) Chemistry - Hindu College, University of Delhi - 1998 

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Publiceret

2012-08-16

Nummer

Årg. 3 Nr. 2 (2012)

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