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4 articles for “TPR”
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Temperature-Programmed Reduction Studies on Fe-promoted Pt/Al2O3 Bimetallic Catalysts
Abstract: 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 …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 2, Issue 2, 2011 · pp. 24–31 Read article
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Supported cobalt-promoted platinum bimetallic nanoparticles – a thermal study
Abstract: 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 …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 2, 2012 · pp. 36–44 Read article
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Synthesis and characterization of mesoporous silica supported Pt catalysts for Decalin dehydrogenation
Abstract: Hydrogen, potentially very attractive energy source as its combustion forms only water in addition to energy. Hydrogen is the cleanest source of fuel. Decalin consists of considerable high hydrogen contents of 7.3 wt% and 64.8 kg H2 /m3 is an excellent mobile storage source for hydrogen. In this work, SBA-15 and carbon modified SBA-15 supported 1wt% Pt catalysts were synthesized and characterized for vapour phase dehydrogenation of decalin. About 154 …
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 3, 2018 · pp. 12–21 Read article
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Vapour Phase Hydrogenation of Levulinic Acid Over Carbon Coated HZSM-5 Supported Ni Catalysts
Abstract: Carbon coated HZSM-5 supported Ni catalyst shown to be a promising catalyst in the hydrogenation of levulinic acid to yield γ- valerolactone. Physicochemical characterizations were undertaken using N2 physisorption, H2-chemisorption, X-ray diffraction (XRD), CHNS and temperature programmed reduction (TPR) techniques. The CHNS studies reveal about 3 wt% carbon was coated by the passage of cyclohexene at 600 °C for 3 h. The carbon coated HZSM-5 supported Ni catalyst shown lower …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 33–38 Read article