Abstract：In the present work, ZnAl2O4 spinel supported Pt-Sn catalysts were applied to dehydrogenation of light alkanes in steam atmosphere. Pt-Sn/ZnAl2O4 catalyst could be used for dehydrogenation of different alkanes as well as the mixed systems with high selectivity to corresponding light olefins. Comparing with Al2O3 supported Pt-Sn catalystic system, which regenerated the catalysts by burning of deposited coke and re-dispersing the Pt on Al2O3 (treating the catalyst with air-chlorine mixture), the activity of the catalyst could be restored only by burning coke, which greatly simplified the regeneration process. The regeneration stability test of 2 000 h showed that the textural properties and the Pt particle size remained unchanged. The catalyst could meet the needs of long-term operation of industrial units.
WU Wenhai,JIANG Dongyu,LIU Jianfeng et al. The Reaction-Regeneration Process of Light Alkanes Dehydrogenation in Steam over ZnAl2O4 Spinel-Supported Pt-Sn Catalyst[J]. Chemical Reaction Engineering and Technology, 2021, 37(6): 496-504.
