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- W4384701270 abstract "Here, we demonstrate a process that constructs highly active Pt–Sn alloy nanoparticles on Sn-Beta zeolite to create highly active and stable propane dehydrogenation catalysts. Sn-Beta zeolite was prepared by the dry-gel (DG) synthesis and dealumination-Sn incorporation (DA) method to stabilize Pt nanoparticles, respectively. Pt–Sn nanoalloy particles with ∼4 nm were formed constructed on Pt/Sn-Beta (DG) via interacting Pt with Sn from Sn-Beta (DG) zeolite, which is realized by series characterizations including high angle angular dark field-scanning transmission electron microscopy (HAADF-STEM) with Energy-dispersive X-ray spectroscopy (EDS), fourier transform infrared spectroscopy of CO (FT-IR-CO) and X-ray absorption spectroscopy (XAS). In contract to Pt/Sn-Beta (DG), [email protected] core-shell nanostructure was realized through the interaction of sufficient Sn species in channel of Sn-Beta (DA) with Pt metal. The as-prepared Pt/Sn-Beta (DG) exhibits superior catalytic performance with a turnover frequency (TOF) at 1.8 h−1 and a high propylene selectivity of 99.0% using 40 kPa propane and 60 kPa nitrogen gas at 550 °C. The stability of the Pt–Sn alloy structure and its resilience to sintering results in a promising one-pass durability over 7360 min." @default.
- W4384701270 created "2023-07-20" @default.
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- W4384701270 date "2023-11-01" @default.
- W4384701270 modified "2023-09-26" @default.
- W4384701270 title "Pt–Sn nanoalloys on Sn-Beta zeolite for efficient propane dehydrogenation" @default.
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- W4384701270 doi "https://doi.org/10.1016/j.micromeso.2023.112736" @default.
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