Advances in zeolite-supported metal catalysts for propane dehydrogenation

Qu, Ziqiang; Sun, Qiming

doi:10.1039/d2qi00653g

Cited by 30 publications

(10 citation statements)

References 131 publications

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“…Although the PDH technique has been commercialized for decades and demonstrated desirable catalytic activity with high propylene selectivity, coke deposition as the dominant reason for the deactivation of PDH catalysts is still a big challenge for further industrial application. 38 At high reaction temperatures, the undesirable formation of various adsorptive carbocation intermediates can be attributed to negative contributions by active components in detrimental states or inappropriate support acidity. Due to their higher reactivity compared to paraffinic compounds, alkenes can readily undergo reactions with these intermediates, contributing to the growth of hydrocarbon species and ultimately resulting in coke formation.…”

Section: Coke Formationmentioning

confidence: 99%

Design Strategies of Stable Catalysts for Propane Dehydrogenation to Propylene

Sun

Wang

et al. 2023

ACS Catal.

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Propylene is one of the most important building blocks for the chemical industry. Traditional propylene production, which is based on oil-based cracking processes, is being challenged by the drastic changes in the global energy situation. The nonoxidative propane dehydrogenation (PDH) technique has emerged as a high-value-rising and promising alternative to traditional propylene production techniques due to the distinct price variance between propane and propylene. Although this technique has been commercialized for decades, thermally induced deactivation is still a big problem. Substantial progress has been made to inhibit the deactivation of propane dehydrogenation catalysts. In this review, we briefly introduce the mechanism of catalytic deactivation, including coke deposition and sintering of active compounds. The design strategies of PDH catalysts, focused on improving the catalytic stability and recyclability, are highlighted from the aspects of active site regulation, metal–support interaction enhancement, and support modification. Finally, the current status and prospects of future catalyst development are also discussed.

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Section: Coke Formationmentioning

confidence: 99%

Design Strategies of Stable Catalysts for Propane Dehydrogenation to Propylene

Sun

Wang

et al. 2023

ACS Catal.

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“…The rational design and fabrication of zeolitesupported metal catalysts with superior catalytic activity and stability is always a hot topic in heterogeneous catalysis. [5][6][7][8][9][10][11][12][13] Despite the excellent connement effect of zeolites, zeolitesupported metal catalysts prepared by the conventional impregnation method still oen suffer from the formation of large and uneven metal particles as well as unsatisfactory sintering and leaching during the catalytic process. This is because the metal species are inclined to be located on the outer surface of zeolite crystals during the synthetic process.…”

Section: Introductionmentioning

confidence: 99%

Highly dispersed Pd-based pseudo-single atoms in zeolites for hydrogen generation and pollutant disposal

Zhang,

Wang,

Meng

et al. 2024

Chem. Sci.

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“…These previous PDH reviews generally summarize the catalytic systems based on elements of the active site, which describe the metal-molecular sieve catalysts as a part of support regulation. Recently, Sun et al 42 summarized the advances in zeolite-based PDH catalysts. As indicated in Figure 1e, apart from zeolites, ordered mesoporous silica (OMS) and hierarchical zeolites are also typical molecular sieves.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Metal-Molecular Sieve Catalysts for Propane Dehydrogenation

et al. 2023

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Propane direct dehydrogenation (PDH) is an attractive technology for propylene production that has received extensive attention. Molecular sieves with uniform porous structure, high thermal stability, and unique confinement capability have been proven to be ideal supports for well-dispersed active sites to generate efficient PDH performance. In this review, we describe the progress in the synthesis and PDH performance of metal-molecular sieve catalysts, including metal-mesoporous silica, metal-zeolite, and metal-hierarchical zeolite catalysts. The strategies in identifying and regulating active site microstructure and metalmolecular sieve interactions as well as their correlations with active site structure and PDH mechanism are introduced simultaneously. Finally, the current limitations and future opportunities of metal-molecular sieve materials in the PDH reaction are also discussed. This review is expected to provide some guidance for future catalyst design based on utilizing the molecular sieve's structural confinement to facilitate propane activation and active site stabilization.

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Advances in zeolite-supported metal catalysts for propane dehydrogenation

Abstract: Propylene is one of the building blocks of the modern industrial mansion, which is the feeding stock for polypropylene, acrylonitrile, and other important chemicals. Propane dehydrogenation (PDH) is one of...

Cited by 30 publications

References 131 publications

Design Strategies of Stable Catalysts for Propane Dehydrogenation to Propylene

Design Strategies of Stable Catalysts for Propane Dehydrogenation to Propylene

Highly dispersed Pd-based pseudo-single atoms in zeolites for hydrogen generation and pollutant disposal

Recent Progress in Metal-Molecular Sieve Catalysts for Propane Dehydrogenation

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