Abstract
Abstract The zirconia, alumina, and zirconia-alumina ( x Zr-Al) supported PtSnIn catalysts were prepared and comparatively studied for propane dehydrogenation reaction. The structure–function relationships of the resultant catalysts are well elucidated upon several state-of-art physico-chemical characterizations. The results show that x Zr-Al used as support for trimetallic PtSnIn catalysts exhibits the significant catalytic performances. The PtSnIn/08Zr-Al catalyst has the highest Pt dispersion accompanied with the smallest average Pt particles, and it presents the initial propane conversion and propylene selectivity above 55.0% and 98.0% respectively. The initial propane conversions after five reaction–regeneration cycles are all above 55.0% and only decrease little (∼3%).
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