Framework-confined Sn in Si-beta stabilizing ultra-small Pt nanoclusters as direct propane dehydrogenation catalysts with high selectivity and stability

Wang, Yansu; Hu, Zhong-Pan; Tian, Wenwen; Gao, Li‐Jiao; Wang, Zheng; Yuan, Zhong‐Yong

doi:10.1039/c9cy01907c

Cited by 60 publications

(47 citation statements)

References 63 publications

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“…The spatial confinement can be realized with the aid of porous materials (i.e., zeolites, [ 21,22 ] metal–organic frameworks (MOFs), [ 23 ] covalent‐organic frameworks (COFs), [ 24 ] and nanostructured carbon [ 25 ] ) or within specific crystal structures. [ 26,27 ] Such delicate nanoscale structures can effectively confine the clusters, ensuring the formation of monodispersed MACs with high uniformity.…”

Section: Synthesis Of Macsmentioning

confidence: 99%

Multiatom Catalysts for Energy‐Related Electrocatalysis

Peng

Feng

Yan

et al. 2020

Advanced Sustainable Systems

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Multiatom catalysts (MACs) with isolated monodisperse active sites comprising two to tens of metal atoms have attracted intensive research attention and industrial interest. With the combination of high atom utilization and well‐defined molecule‐like electronic structure, MACs show great potential for applications in a wide range of electrochemical catalytic reactions. This review aims to discuss the recent progress of MACs in energy‐related electrocatalysis. Critical issues, including the synthesis and characterization of the MACs, will be showcased. Moreover, recent advances are highlighted in the design and synthesis of MACs with a well‐controlled structure and composition to achieve enhanced catalytic performance in energy‐related electrocatalysis. Current challenges and future prospects for MACs are also presented to shed light on the rational design of MACs as potential industrialized catalysts in the future.

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Section: Synthesis Of Macsmentioning

confidence: 99%

Multiatom Catalysts for Energy‐Related Electrocatalysis

Peng

Feng

Yan

et al. 2020

Advanced Sustainable Systems

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show abstract

“…The confinement has been shown to be crucial to enhance the propane conversion and the propene selectivity. Dealuminated Hβ (SiO 2 /Al 2 O 3 = 25) was used to encapsulate Sn species existing in tetrahedral coordination states into the framework of dealuminated beta (Si-beta) [70]. The strong Pt-Sn (IV) interactions inhibited the coke formation, while high dispersion of the ultrasmall nanoclusters inhibited the sintering of Pi clusters [71].…”

Section: Support Morphologymentioning

confidence: 99%

Propylene Synthesis: Recent Advances in the Use of Pt-Based Catalysts for Propane Dehydrogenation Reaction

et al. 2021

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Propylene is one of the most important feedstocks in the chemical industry, as it is used in the production of widely diffused materials such as polypropylene. Conventionally, propylene is obtained by cracking petroleum-derived naphtha and is a by-product of ethylene production. To ensure adequate propylene production, an alternative is needed, and propane dehydrogenation is considered the most interesting process. In literature, the catalysts that have shown the best performance in the dehydrogenation reaction are Cr-based and Pt-based. Chromium has the non-negligible disadvantage of toxicity; on the other hand, platinum shows several advantages, such as a higher reaction rate and stability. This review article summarizes the latest published results on the use of platinum-based catalysts for the propane dehydrogenation reaction. The manuscript is based on relevant articles from the past three years and mainly focuses on how both promoters and supports may affect the catalytic activity. The published results clearly show the crucial importance of the choice of the support, as not only the use of promoters but also the use of supports with tuned acid/base properties and particular shape can suppress the formation of coke and prevent the deep dehydrogenation of propylene.

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“…Both studies reported the framework Sn sites facilitate the high dispersion of the Pt species. Wang et al . reported their optimized catalyst (0.3 wt % Pt, 0.5 wt % Sn) lost only 13 % of its initial propene formation rate over 12 h at 600 °C and that it was stable over four reaction cycles at 550 °C with >99 % selectivity to propylene.…”

Section: High Temperature Alkane Conversionmentioning

confidence: 99%

Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions

et al. 2020

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The development of catalysts that can operate under exceptionally harsh and unconventional conditions is of critical importance for the transition of the energy and chemicals industries to low‐emission and renewable chemical feedstocks. In this review we will highlight materials and more specifically metal‐containing zeolite catalysts that have been tested under harsh reaction conditions such as high temperature light alkane conversion and biomass valorization. Particular attention will be given to studies that explore the stability and recyclability of metal‐containing zeolite catalysts operating in continuous modes. Metal‐containing zeolites are considered as an important class of catalysts operating outside the comfort zone of current heterogeneous catalytic reactions in both gas and liquid phase reactions. The relationship between the properties of the metal‐containing zeolite and catalytic performance will be explored.

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Framework-confined Sn in Si-beta stabilizing ultra-small Pt nanoclusters as direct propane dehydrogenation catalysts with high selectivity and stability

Abstract: Highly stable Pt/Sn-Si-beta catalysts were prepared via an improved post-synthesis method, exhibiting high catalytic activity, good selectivity and excellent stability for propane dehydrogenation to propene.

Cited by 60 publications

References 63 publications

Multiatom Catalysts for Energy‐Related Electrocatalysis

Multiatom Catalysts for Energy‐Related Electrocatalysis

Propylene Synthesis: Recent Advances in the Use of Pt-Based Catalysts for Propane Dehydrogenation Reaction

Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions

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