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Strontium Promoted PtSn/Al2O3 Catalysts for Propane Dehydrogenation to Propylene

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Abstract

PtSn/Al2O3 and PtSnSr/Al2O3 were prepared by the incipient wetness impregnation method. The added Sn and Sr are uniformly distributed on the surface without damaging the original crystal structure and surface texture properties. The addition of Sn not only changes the dispersion of Pt, reduces the reduction temperature of Pt, but also provides electrons to Pt, increases the electron cloud density on the surface of Pt, and reduces the deep propylene adsorption. The addition of Sr reduces the number of total acid sites and strong acid sites, reduces the generation of adverse effects and carbon deposition, slows down the deactivation of the catalyst, and improves the selectivity of propylene. Pt1.5Sn1.5Sr/Al2O3 showed the best catalytic reaction performance and remained stable after five cycles of regeneration.

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Acknowledgements

We gratefully acknowledge the financial support from the Fundamental Research Funds for the Central Universities (No. JKA01221712).

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  1. State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Room 303, 16th Research Building, Shanghai, 200237, China

    Haoyue Fu, Haitao Zhang, Hongfang Ma, Weixin Qian & Weiyong Ying

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Contributions

HF: Conceptualization, Methodology, Investigation, Writing—original draft, Visualization. HZ: Writing—review & editing, Supervision, Funding acquisition. HM: Resources, Funding acquisition. WQ: Funding acquisition. WY: Writing—review & editing, Supervision, Funding acquisition.

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Correspondence to Weixin Qian.

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Fu, H., Zhang, H., Ma, H. et al. Strontium Promoted PtSn/Al2O3 Catalysts for Propane Dehydrogenation to Propylene. Catal Lett (2024). https://doi.org/10.1007/s10562-024-04619-9

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