Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior

Cheng, Ming; Zhao, Huahua; Yang, Jian; Zhao, Jing‐Tai; Yan, Liang; Song, Huanling; Chou, Lingjun

doi:10.1039/c9ra00217k

Cited by 9 publications

(2 citation statements)

References 38 publications

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“…Many alternative catalyst systems including metal oxides such as VO x , FeO x , ZnO, metal sulfides, and carbon materials have been extensively developed, and their design concepts could provide important references for the development of an efficient dehydrogenation catalyst [7][8][9][10][11][12]. Recently, Zn species have been explored as active components of dehydrogenation catalysts, in addition to their role as promoters [13][14][15][16]. Moreover, ZnO-based materials, such as ZnO loaded on silicalite-1 or doped with NbO, are usually synthesized via impregnation, ion-exchange, and the pulsed laser deposition method, which could exhibit good propane dehydrogenation performance [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Exploration of ZnO-Doped Nitrogen-Carbon Materials Derived from Polyamide-Imide for Propane Dehydrogenation

Zhao,

Ji,

et al. 2024

Inorganics

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A series of ZnO-doped nitrogen-carbon materials (xZnO-N-C) with ZnO contents of 5–40% are prepared by a vacuum curing–carbonization strategy using polyamide-imide as the N-C source and zinc nitrate as the metal source for propane dehydrogenation (PDH). 20ZnO-N-C exhibits outstanding initial activity (propane conversion of 35.2% and propene yield of 24.6%) and a relatively low deactivation rate (0.071 h−1) at 600 °C. The results of detailed characterization show that small ZnO nanoparticles (5.5 nm) with high dispersion on the catalyst can be obtained by adjusting the ZnO loading. Moreover, more nitrogen-based species, especially ZnNx species, are formed on 20ZnO-N-C in comparison with 20ZnO-N-C-air prepared via curing carbonization without vacuum, which may contribute to the higher product selectivity and catalytic stability of 20ZnO-N-C. The active sites for the PDH reaction on the catalyst system are proposed to be C=O species and Zn2+ species. Moreover, the carbon deposition and the aggregation of ZnO nanoparticles are the causes of activity loss on this catalyst system.

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Section: Introductionmentioning

confidence: 99%

Exploration of ZnO-Doped Nitrogen-Carbon Materials Derived from Polyamide-Imide for Propane Dehydrogenation

Zhao,

Ji,

et al. 2024

Inorganics

Self Cite

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show abstract

“…2 provide important reference for the development of efficient dehydrogenation catalyst [7][8][9][10][11][12]. Recently, exploration of Zn species as active component of dehydrogenation catalyst has extensively emerged in addition to the role as promoters [13][14][15][16]. In particular, isolated Zn atoms or highly dispersed ZnO nanoclusters have demonstrated to present high propene selectivity and catalytic stability in PDH system [17].…”

Section: Introductionmentioning

confidence: 99%

Exploration of ZnO Doped Nitrogen-Carbon Derived from Polyamide-Imide for Propane Dehydrogenation

Zhao,

Ji,

et al. 2023

Preprint

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A series of ZnO doped nitrogen-carbon materials (xZnO-N-C) with ZnO content of 5-40% are prepared by vacuum curing-carbonization strategy using polyamide-imide as N-C source and zinc nitrate as metal source for propane dehydrogenation (PDH). 20ZnO-N-C exhibits outstanding initial activity (propane conversion of 35.2% and propene yield of 24.6%) and relatively low deactivation rate (0.071 h-1) at 600 ◦C. The detailed characterization results show that small ZnO nanoparticles (5.5 nm) with high dispersion on the catalyst could be obtained by adjusting ZnO loading. Moreover, much more nitrogen-based species especially ZnNx species are formed on 20ZnO-N-C by comparison with 20ZnO-N-C-air prepared by curing-carbonization without vacuum, which may contribute for the higher product selectivity and catalytic stability of 20ZnO-N-C. The probable active sites for PDH reaction on the catalyst system are proposed to be C=O species and Zn2+ species. Moreover, the aggregation of ZnO nanoparticles is the primary reason for the activity loss on this catalyst system. The present finding not only provides the feasible construction strategy for the metal oxide doped nitrogen-carbon materials but also valuable guidance for the design of efficient catalyst in dehydrogenation of light alkane.

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Dehydrogenation of isobutane to isobutene over a Pt-Cu bimetallic catalyst in the presence of LaAlO3 perovskite

Meng

Wang

et al. 2021

Chinese Journal of Chemical Engineering

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Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior

Abstract: Facile synthesis of ordered mesoporous zinc alumina catalysts that exhibited great catalytic activity (45.0% isobutane conversion, 86.7% isobutene selectivity) and stability.

Cited by 9 publications

References 38 publications

Exploration of ZnO-Doped Nitrogen-Carbon Materials Derived from Polyamide-Imide for Propane Dehydrogenation

Exploration of ZnO-Doped Nitrogen-Carbon Materials Derived from Polyamide-Imide for Propane Dehydrogenation

Exploration of ZnO Doped Nitrogen-Carbon Derived from Polyamide-Imide for Propane Dehydrogenation

Dehydrogenation of isobutane to isobutene over a Pt-Cu bimetallic catalyst in the presence of LaAlO3 perovskite

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