Highly stable and selective Pt/TS-1 catalysts for the efficient nonoxidative dehydrogenation of propane

Hou, Weilong; Lin, Kehang; Zhang, Xiangyu; Xu, Bowen; Wang, Yuexia; Lu, Xinqing; Gao, Yijing; Ma, Rui; Fu, Yanghe; Zhu, Weidong

doi:10.1016/j.cej.2023.145648

Cited by 10 publications

(2 citation statements)

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“…Zhu et al developed MFItype titanosilicate-1 (TS-1) zeolite supported catalyst (Pt/TS-1) for efficient PDH, of which the framework Ti increased the dispersity and electron density of Pt species. 18 Yuan and coworkers developed a Pt/Sn−Si-beta catalyst for the PDH reaction, in which ultrasmall Pt nanoclusters were highly dispersed and strongly interacted with the skeleton Sn sites in Beta zeolite. 19 These studies demonstrate that the highly stable skeleton heteroatoms are able to enhance the stability and activity of the Pt species.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The key to the outstanding catalytic activity and long-term stability was the stable anchoring of the Pt 4 clusters to the skeleton Ge in the double four-membered rings. Zhu et al developed MFI-type titanosilicate-1 (TS-1) zeolite supported catalyst (Pt/TS-1) for efficient PDH, of which the framework Ti increased the dispersity and electron density of Pt species . Yuan and co-workers developed a Pt/Sn–Si-beta catalyst for the PDH reaction, in which ultrasmall Pt nanoclusters were highly dispersed and strongly interacted with the skeleton Sn sites in Beta zeolite .…”

Section: Introductionmentioning

confidence: 99%

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Single Pt Coordinated with Framework Fe in MWW-Type Ferrisilicate toward Efficient Propane Dehydrogenation

Zhang,

Chen,

et al. 2024

ACS Catal.

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Single atom catalysts have been widely studied due to their high metal dispersity and remarkable catalytic performance. However, stabilizing single-atom metals remains challenging because of the high surface free energy. In this work, framework Fe atom-stabilized single atom Pt were successfully confined into MWW zeolite (Pt@Fe-MWW) by a one-pot synthesis strategy. The isolated skeleton Fe served as anchoring site and promoter to stabilize the single atom Pt via Pt−O−Fe coordination as identified by the in situ CO-IR spectra and XAFS analysis, enabling Pt@ Fe-MWW with satisfied activity for the PDH reaction with trace Pt content (<0.01 wt %). A linear relationship between the quantities of Pt−O−Fe coordinated species and the propylene formation rate further confirmed the synergistic catalysis of Pt and skeleton Fe species. A recorded propylene formation rate of Pt (FR C3H6/Pt ) of 1100 mol/g Pt /h was achieved with a Pt content of 0.006 wt %. DFT calculations revealed that the formation of Pt−O−Fe species reduced the dissociation energy of the C−H bonds and facilitated the desorption of H 2 , enabling efficient propane dehydrogenation.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%