2023
DOI: 10.1021/acscatal.2c05042
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Isolated Pt Species Anchored by Hierarchical-like Heteroatomic Fe-Silicalite-1 Catalyze Propane Dehydrogenation near the Thermodynamic Limit

Abstract: The atomic dispersion of precious metals accompanied by maximum atom utilization can provide specific chemical properties compared to nanoparticles and clusters that have attracted widespread interest. The selection of a suitable carrier to stabilize platinum atoms while maintaining high stability and propylene selectivity is of great challenge for propane dehydrogenation reactions operating at extremely high temperatures. Here, we report a conceptually designed catalyst comprising isolated Pt atoms stably bon… Show more

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Cited by 38 publications
(32 citation statements)
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“…The hierarchical zeolites combine the advantages of fast diffusion of mesopores and the confinement of micropores, which provides a viable pathway to construct efficient PDH catalysts. As summarized in Figure and Table , researchers have developed a set of promising Pt-hierarchical zeolite catalysts which obtain impressive propylene selectivity and catalytic lifetime at thermodynamic conversion. ,, In the past decade, there is a significant progress of the Pt-free catalysts in PDH performance. Both industrially relevant propylene productivity and selectivity can be obtained using several promising Co/Zn-based molecular sieve systems, ,, while the typical lifetime of these systems is still inferior to Pt-based systems, especially the Pt-hierarchical zeolite catalysts.…”
Section: Summary and Perspectivesmentioning
confidence: 99%
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“…The hierarchical zeolites combine the advantages of fast diffusion of mesopores and the confinement of micropores, which provides a viable pathway to construct efficient PDH catalysts. As summarized in Figure and Table , researchers have developed a set of promising Pt-hierarchical zeolite catalysts which obtain impressive propylene selectivity and catalytic lifetime at thermodynamic conversion. ,, In the past decade, there is a significant progress of the Pt-free catalysts in PDH performance. Both industrially relevant propylene productivity and selectivity can be obtained using several promising Co/Zn-based molecular sieve systems, ,, while the typical lifetime of these systems is still inferior to Pt-based systems, especially the Pt-hierarchical zeolite catalysts.…”
Section: Summary and Perspectivesmentioning
confidence: 99%
“…The diffusion limitations could be evaluated via the Weisz-Parter criterion, intelligent gravimetric analyzer, probe-DRIFT spectra, etc. 61,62,93 The high temperature of the PDH reaction makes the quantitative determination of the diffusion coefficient under reaction conditions difficult. One recent study employs theoretical force-field molecular dynamics (FFMD) simulations to indicate the propane molecules have no obvious diffusion limitations in typical MFI (S-1) and BEA (Si-Beta) topological zeolites.…”
Section: Summary and Perspectivesmentioning
confidence: 99%
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