Supported Pt–Sn catalysts highly selective for isobutane dehydrogenation: preparation, characterization and catalytic behavior
作者： J Llorca , N Homs , J León , J Sales , J.L.G Fierro
DOI: 10.1016/S0926-860X(99)00253-7
关键词: Isobutane 、 Transition metal 、 Adsorption 、 Inorganic chemistry 、 Catalysis 、 Bimetallic strip 、 Chemistry 、 Platinum 、 Heterogeneous catalysis 、 Dehydrogenation 、 Process Chemistry and Technology
摘要: Abstract Magnesia-supported platinum–tin catalysts with a Pt content 0.25–3% and atomic ratio Pt/Sn = 1 were prepared from Pt–Sn bimetallic complex. Characterization of by XRD, TEM, EDX, XPS CO singleton frequency indicated the formation well-dispersed particles, size which decreased metal content. Both dilution electronic effects on Sn evidenced IR experiments adsorption. The behavior in isobutane dehydrogenation at 753 K atmospheric pressure was related to their structural characteristics compared silica- alumina-supported similar method, respective monometallic catalysts. most selective isobutene production. Selectivities higher than 99% achieved for conversion values 11%.
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