A novel BEA-type zeolite core–shell multiple catalyst for hydrogen-rich gas production from ethanol steam reforming

Zheng, Ziliang; Yang, Di; Li, Tingting; Yin, Xiufeng; Wang, Shiyao; Wu, Xu; An, Xia; Xie, Xianmei

doi:10.1039/c6cy00119j

Cited by 13 publications

(6 citation statements)

References 71 publications

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“…BEA‐type zeolite core shell catalysts: FeCu supported on Si‐Beta core‐ Ni supported on Al‐Beta shell (FeCu/Si‐Beta@Ni/Al‐Beta) has been prepared using wet impregnation method and “seeded growth” method (Scheme ) . Firstly, Si‐Beta zeolite was co‐impregnated with Fe and Cu precursors together.…”

Section: Synthesis Methods For Core/yolk Shell Catalystsmentioning

confidence: 99%

“…FeCu/Si‐Beta@Ni/Al‐Beta (Fe x Cu y ‐SB@NB) core shell catalysts have been prepared for SRE reaction (Figure ) . Among all the catalysts investigated, Fe 2.5 Cu 2.5 ‐SB@NB catalysts, with the presence of highly dispersed metallic Fe, Cu and Ni as well as Fe 2 O 3 and bimetallic FeCu alloy, showed the highest H 2 selectivity and highest activity.…”

Section: Applications Of Core/yolk Shell Catalysts For Hydrocarbon Rementioning

confidence: 99%

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Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Wang

Kawi

2018

ChemCatChem

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Syngas/hydrogen production via hydrocarbon reforming reactions is crucial. Whereas, they need high reaction temperature to obtain economically feasible hydrocarbon conversions, which renders the active and cheap transition metal based catalysts easy to be sintered, leading to the high carbon deposition rate and gradual degradation of catalytic performance. Therefore, developing sintering and carbon resistant catalysts becomes one of the most important issues for these reforming reactions to be industrially applied. Designing catalysts with core/yolk shell structure turns out to be one of the most effective strategies to solve this issue. Herein, recent progress which has been made in the synthesis method for core/yolk shell catalysts with different shell materials such as SiO2, zeolite, CeO2 and Al2O3 is summarized. Additionally, specific applications of these core/yolk catalysts for various hydrocarbon reforming reactions such as dry reforming, steam reforming and methane oxidation are reviewed with the emphasis on revealing the reasons leading to their outstanding catalytic performance. Lastly, possible research directions in core/yolk shell catalysts are proposed.

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Section: Synthesis Methods For Core/yolk Shell Catalystsmentioning

confidence: 99%

Section: Applications Of Core/yolk Shell Catalysts For Hydrocarbon Rementioning

confidence: 99%

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Wang

Kawi

2018

ChemCatChem

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“…In spite of vast literature devoted to the ESR reaction in the last years, zeolite supported catalysts have not been widely studied. The micro-mesoporous structure of zeolites may promote formation of the small metal nanoparticles [16][17][18][19][20][21]. On the other hand, high acidity of zeolites may drive to the extensive formation of carbon deposits in the ESR reaction.…”

Section: Introductionmentioning

confidence: 99%

Effects of dealumination on the performance of Ni-containing BEA catalysts in bioethanol steam reforming

Gac

Greluk

Słowik

et al. 2018

Applied Catalysis B: Environmental

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The effects of dealumination of BEA zeolite on the formation of nickel active sites and the performance of Nicontaining BEA zeolite catalysts in the steam reforming of ethanol have been studied. Ni-containing BEA zeolite catalysts were prepared by the impregnation of unmodified and dealuminated BEA zeolites with Ni(NO 3) 2 precursor. The properties of Ni 10 HAlBEA and Ni 10 SiBEA zeolite catalysts were studied by means of X-ray diffraction, 1 H, 27 Al and 29 Si magic-angle spinning nuclear magnetic resonance, Fourier-transform infrared and Raman spectroscopy, transmission electron microscopy, temperature-programmed reduction, temperature-programmed ammonia and hydrogen desorption methods. High initial activity and selectivity of Ni 10 HAlBEA to hydrogen and carbon dioxide with unmodified BEA zeolite support in the steam reforming of ethanol reaction performed at 500°C was observed. However, fast deactivation of Ni 10 HAlBEA catalyst, manifested in the decrease of water conversion, drop of selectivity to H 2 and CO 2 , and increase in the selectivity to ethylene with the time-on-stream, was observed. In contrast, Ni 10 SiBEA zeolite catalyst showed lower initial activity but higher durability and resistance for carbon deposition. It was stated that dealumination of BEA zeolite led to the slight structural changes and simultaneously pronounced decrease of acidity. Formation of the large nickel crystallites was hindered on Ni 10 SiBEA zeolite catalyst. TEM and Raman spectroscopy studies indicated that deactivation of Ni 10 HAlBEA was related to formation of nickel mediated filamentous, graphitic and amorphous carbon deposits. Much smaller amounts of filamentous carbons were observed on the Ni 10 SiBEA zeolite catalyst prepared by the use of dealuminated zeolite support.

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“…In our previous work, the core‐shell structure catalyst was found to be positive for ESR in terms of the high catalytic activity and selectivity toward hydrogen. Moreover, the special hollow structure of the catalyst not only prevents leaching and agglomeration of Pt of the catalyst but could also enhance activity and long‐term stability for H 2 production in the LT‐ESR reaction …”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the special hollow structure of the catalyst not only prevents leaching and agglomeration of Pt of the catalyst but could also enhance activity and long-term stability for H 2 production in the LT-ESR reaction. 19,20 Recently, of particular interest is yolk-shell system, 21,22 which represent a new type of special core-shell framework with a distinctive core@void@shell architecture. Combined with the catalytic mechanisms of coreshell and hollow structural materials, yolk-shell structure catalyst is a promising functional nanomaterial for the LT-ESR reaction.…”

mentioning

confidence: 99%

A high-performance CeO₂ @Pt-Beta yolk-shell catalyst used in low-temperature ethanol steam reforming for high-purity hydrogen production

et al. 2019

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Summary A novel Pt‐based Beta encapsulated CeO2 yolk‐shell catalyst was successfully synthesized via a RF layer in the synthetic process. The CeO2@Pt‐Beta catalyst showed high catalytic activity and stability toward the LT‐ESR with respect to the reference Pt‐Beta, CeO2‐Pt‐Beta, which benefited from the special yolk‐shell structure and the synergistic effect between the CeO2 movable core and Pt metal. The confinement effect of the yolk‐shell architecture contributed to the high dispersion of Pt nanoparticles as well as to the accumulation of reactant molecules in the enclosed void space, which ensured the reactants reacted with CeO2 and Pt to achieve a complete reaction.

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A novel BEA-type zeolite core–shell multiple catalyst for hydrogen-rich gas production from ethanol steam reforming

Abstract: BEA-type core–shell catalysts consisting of a core supporting Cu and Fe and a Ni-based shell were investigated for their ethanol steam reforming (ESR) activity.

Cited by 13 publications

References 71 publications

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Effects of dealumination on the performance of Ni-containing BEA catalysts in bioethanol steam reforming

A high-performance CeO₂ @Pt-Beta yolk-shell catalyst used in low-temperature ethanol steam reforming for high-purity hydrogen production

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A novel BEA-type zeolite core–shell multiple catalyst for hydrogen-rich gas production from ethanol steam reforming

Abstract: BEA-type core–shell catalysts consisting of a core supporting Cu and Fe and a Ni-based shell were investigated for their ethanol steam reforming (ESR) activity.

Cited by 13 publications

References 71 publications

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Effects of dealumination on the performance of Ni-containing BEA catalysts in bioethanol steam reforming

A high-performance CeO2 @Pt-Beta yolk-shell catalyst used in low-temperature ethanol steam reforming for high-purity hydrogen production

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A high-performance CeO₂ @Pt-Beta yolk-shell catalyst used in low-temperature ethanol steam reforming for high-purity hydrogen production