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- W2089823786 abstract "Distinct selectivity changes have been observed in the conversion of n-hexane over Pt upon its being alloyed with Sn. In systems consisting of PtSn on nonacidic supports, the presence of true alloys can be confirmed. Addition of Sn causes a drastic lowering of the rates of those reactions which produce catalyst poisons and hence gives an increase in stability. The change in selectivity can be interpreted in terms of a change in adsorption properties due to differences in the number of adjacent platinum atoms required for the various reaction pathways (ensemble effect). It is assumed that with these catalysts and at temperatures above 500 °C, secondary reactions in the gas phase become important. Hexatrienes formed on the catalyst surface might then contribute to the benzene production and radicals might initiate hydrogenolysis. The present results allow some speculations on the role of the metal component in bimetallic dual-functional Pt catalyst systems." @default.
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- W2089823786 title "Conversion of n-hexane over monofunctional supported and unsupported PtSn catalysts" @default.
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- W2089823786 doi "https://doi.org/10.1016/0021-9517(80)90065-2" @default.
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