Construction of Single Ni Atom-Immobilized ZIF-8 with Ordered Hierarchical Pore Structures for Selective CO₂ Photoreduction

ACS Catalysis, Год журнала: 2023, Номер 13(10), С. 6630 - 6640

Опубликована: Май 1, 2023

The rational construction of single-atom-modified porous metal–organic frameworks (MOFs) for efficient CO2 photoconversion is a promising avenue, yet the one that poses significant challenge. In this study, we demonstrate successful Ni single-atom-immobilized ZIF-8 with an ordered hierarchical (macro–micro) pore structure highly photocatalytic reduction to CO. interpenetrated macroporous in microporous built up by employing polystyrene (PS) opal as hard template, while high stability framework achieved through double-solvent-induced crystallization. enables rapid mass transport and strong adsorption CO2, single atoms active sites electron-trapping optimize reaction energy hinder competitive H2 evolution. As result, achieves activity 4.2 mmol g–1 h–1 CO yield electronic selectivity 94%, which shows 47-fold ZIF-8. This work highlights significance constructing MOFs single-atom-active improve photoreduction realizing carbon neutralization.

Язык: Английский

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Recent advances in thermal catalytic CO2 methanation on hydrotalcite-derived catalysts

Fuel, Год журнала: 2022, Номер 321, С. 124115 - 124115

Опубликована: Апрель 10, 2022

Язык: Английский

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Plasma-Catalytic CO₂ Reforming of Toluene over Hydrotalcite-Derived NiFe/(Mg, Al)O_x Catalysts

JACS Au, Год журнала: 2023, Номер 3(3), С. 785 - 800

Опубликована: Фев. 17, 2023

The removal of tar and CO2 in syngas from biomass gasification is crucial for the upgrading utilization syngas. reforming (CRT) a potential solution which simultaneously converts undesirable to In this study, hybrid dielectric barrier discharge (DBD) plasma-catalytic system was developed toluene, model compound, at low temperature (∼200 °C) ambient pressure. Periclase-phase (Mg, Al)O x nanosheet-supported NiFe alloy catalysts with various Ni/Fe ratios were synthesized ultrathin Ni-Fe-Mg-Al hydrotalcite precursors employed CRT reaction. result demonstrated that promising promoting low-temperature reaction by generating synergy between DBD plasma catalyst. Among catalysts, Ni4Fe1-R exhibited superior activity stability because its highest specific surface area, not only provided sufficient active sites adsorption reactants intermediates but also enhanced electric field plasma. Furthermore, stronger lattice distortion more isolated O2- adsorption, having most intensive interaction Ni Fe restrained catalyst deactivation induced segregation form FeO . Finally, situ Fourier transform infrared spectroscopy combined comprehensive characterization used elucidate mechanism gain new insights into plasma-catalyst interfacial effect.

Язык: Английский

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Enhanced ammonia decomposition activity over unsupported Co3O4: Unravelling the promotion effect of alkali metal

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 330, С. 122644 - 122644

Опубликована: Март 15, 2023

Язык: Английский

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Unraveling the role of Fe5C2 in CH4 formation during CO2 hydrogenation over hydrophobic iron catalysts

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 327, С. 122449 - 122449

Опубликована: Фев. 13, 2023

Язык: Английский

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Ni–MgO catalyst prepared by a sol-gel method for low temperature CO2 methanation

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 66, С. 195 - 207

Опубликована: Апрель 13, 2024

Язык: Английский

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Benchmarking promoters of Fe/activated carbon catalyst for stable hydrogenation of CO2 to liquid hydrocarbons

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 325, С. 122370 - 122370

Опубликована: Янв. 10, 2023

Язык: Английский

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Ru/K2CO3–MgO catalytic sorbent for integrated CO2 capture and methanation at low temperatures

Chemical Engineering Journal, Год журнала: 2023, Номер 469, С. 143772 - 143772

Опубликована: Май 31, 2023

Язык: Английский

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CO₂ Methanation over Cobalt Nanoparticles Embedded in ZIF‐L–Derived Porous Carbon

ChemCatChem, Год журнала: 2023, Номер 15(5)

Опубликована: Янв. 27, 2023

Abstract Catalytic hydrogenation of CO 2 into CH 4 is an effective method to convert waste and green hydrogen clean fuel on a large scale. However, the viability such process largely relies development highly active heterogeneous catalysts. Here, tailored methanation catalyst, Co nanoparticles immobilized porous N‐doped carbon matrix, prepared by carbonization cobalt‐based layered zeolitic imidazolate framework (ZIF−L) material under argon atmosphere. This catalyst displays specific activity 22.3 mol CH4 /g cat .min at 350 °C, significantly outperforming similar derived from more conventional ZIF‐67 (11.7 .min). explained stabilization small (∼20 nm) presence abundant medium‐strength basic sites related nitrogen doping in ZIF−L. Notably, new shows high stability; no deactivation observed up 60 hours stream.

Язык: Английский

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A short overview of Power-to-Methane: Coupling preparation of feed gas with CO2 methanation

Chemical Engineering Science, Год журнала: 2023, Номер 274, С. 118692 - 118692

Опубликована: Март 28, 2023

Язык: Английский

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