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|Title: ||Platinum group metals substituted MCM-41 molecular sieves: Synthesis, characterization and application as novel catalysts for the reduction of NO by CO|
|Authors: ||RAVAT, V|
|Keywords: ||lean-burn conditions|
|Issue Date: ||2009|
|Publisher: ||ELSEVIER SCIENCE BV|
|Citation: ||JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 314(1-2), 49-54|
|Abstract: ||Mesoporous MCM-41 molecular sieves with Si/M (molar) ratios of 100 containing platinum group metals (Pd, Pt, Rh. Ir) were synthesized by the hydrothermal method These catalysts were systematically characterized by various analytical a rid spectroscopic techniques, viz, XRD, TEM. DRUV-vis, N(2) sorption XRD analysis confirmed that the presence of platinum metals did not influence the parent structure and phase purity of the MCM-41 catalysts DRUV-vis spectral studies of MCM-41 indicate the presence of platinum metal ions The catalytic activities of these catalysts were evaluated for the reduction of NO by CO as a function of temperature The Study revealed that the catalytic activity is, in the order (Rh>Ir>Pd>Pt) Our experimental results are in good agreement with theoretical previous analysts based on the NO(center dot) dissociation activation energy. (C) 2009 Elsevier B V.|
|Appears in Collections:||Article|
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