Temperature-Programmed Reduction Studies on Fe-promoted Pt/Al2O3 Bimetallic Catalysts

Autores/as

  • Shailesh Kumar Jain Galgotias Educational Institutions Greater Noida

Palabras clave:

TPR, bimetallic catalysts, TGA, DSC

Resumen

 Pt/Al2O3-based bimetallic catalysts were prepared using surface organometallic method (SOMC) to obtain catalysts with a nominal promoter to platinum surface atomic ratio of 1:2 and 1:1 (corresponding to typically 0.2–0.4 mass% of the promoting metals; here Fe). Temperature-programmed reduction (TPR) studies showed two distinct temperature regions of hydrogen uptake during reduction by the parent Pt/Al2O3 (5 mass%) and the Fe-promoted catalysts. The shift in peak maxima in the case of promoted catalysts to higher temperatures has been interpreted as a result of creation of interfacial sites responsible for improved performance of the bimetallic catalysts. Thermogravimetric and differential scanning calorimetric studies, performed in air and under H2/N2 atmosphere, supported the TPR results and confirmed the stability of catalytic systems up to 600°C. Keywords:TPR, bimetallic catalysts, TGA, DSC 

Biografía del autor/a

  • 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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Publicado

2012-01-19

Número

Vol. 2 Núm. 2 (2011)

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