Transition‐Metal‐Doped CeO2 for the Reverse Water‐Gas Shift Reaction: An Experimental and Theoretical Study on CO2 Adsorption and Surface Vacancy Effects DOI Creative Commons
Yue Yu,

Wenxuan Xia,

Aiping Yu

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 31, 2024

Abstract Transition metal‐doped ceria (M−CeO 2 ) catalysts (M=Fe, Co, Ni and Cu) with multiple loadings were experimentally investigated for reverse water gas shift (RWGS) reaction. Density functional theory (DFT) calculations performed to benchmark the properties that impact catalytic activity of CO reduction. Temperature‐programmed desorption (TPD) was conducted study binding strength on doped CeO surfaces; trend energy along increasing metal loading agrees DFT calculations. Notably, dissociative adsorption oxygen vacancy (OV) formation are key descriptors obtained from both experiments, which can be used evaluate performance. Results show effectiveness transition doping in enhancing reducibility surfaces, Fe showing particularly promising results, i. e., conversion higher than 56 % at 600 °C 100 selectivity CO. Cu exhibits but low conversion, while Co showed notable ability methanation, high loadings. This finds an effective based RWGS catalyst corresponds OV sites have energies surface reduction, moderate strong interaction promote C−O bond scission.

Language: Английский

An active, stable cubic molybdenum carbide catalyst for the high-temperature reverse water-gas shift reaction DOI
Milad Ahmadi Khoshooei, Xijun Wang, Gerardo Vitale

et al.

Science, Journal Year: 2024, Volume and Issue: 384(6695), P. 540 - 546

Published: May 2, 2024

Although technologically promising, the reduction of carbon dioxide (CO

Language: Английский

Citations

56
Transforming CO2 to valuable feedstocks: Emerging catalytic and technological advances for the reverse water gas shift reaction DOI

Monica Louise T. Triviño,

Nomer C. Arriola,

You Seok Kang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 487, P. 150369 - 150369

Published: March 12, 2024

Language: Английский

Citations

25
Designing Ni-in intermetallic alloy compounds for high activity and selectivity in low-temperature RWGS reaction DOI
Zhourong Xiao,

Changxuan Zhang,

Jianmin Gu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160529 - 160529

Published: Feb. 1, 2025

Language: Английский

Citations

2
A Review of CeO2 Supported Catalysts for CO2 Reduction to CO through the Reverse Water Gas Shift Reaction DOI Open Access

Parisa Ebrahimi,

Anand Kumar, Majeda Khraisheh

et al.

Catalysts, Journal Year: 2022, Volume and Issue: 12(10), P. 1101 - 1101

Published: Sept. 23, 2022

The catalytic conversion of CO2 to CO by the reverse water gas shift (RWGS) reaction followed well-established synthesis technologies could be a practical technique convert valuable chemicals and fuels in industrial settings. For catalyst developers, prevention side reactions like methanation, low-temperature activity, selectivity enhancements for RWGS are crucial concerns. Cerium oxide (ceria, CeO2) has received considerable attention recent years due its exceptional physical chemical properties. This study reviews use ceria-supported active metal catalysts along with discussing some basic fundamental features ceria. mechanism, kinetics on supported catalysts, as well importance oxygen vacancies also explored. Besides, advances CeO2 design strategies increasing activity towards systematically identified, summarized, assessed understand impacts physicochemical parameters performance such morphologies, nanosize effects, compositions, promotional abilities, metal-support interactions (MSI) role selected procedures forming distinct structural morphologies. brief review may help future optimization.

Language: Английский

Citations

57
Ionic Nickel Embedded in Ceria with High Specific CO2 Methanation Activity DOI
Mathias Barreau, Davide Salusso, Juan Li

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(25)

Published: April 17, 2023

Abstract CO 2 hydrogenation to methane is gaining increasing interest as one of the most promising ways store intermittent renewable energy in form chemical fuels. Ni particles supported on CeO represent a highly efficient, stable and inexpensive catalyst for this reaction. Herein, Ni‐doped nanoparticles were tested methanation showing an extremely high mass‐specific activity CH 4 selectivity. Operando characterization reveals that performance tightly associated with ionic Νi Ce 3+ surface sites, while formation metallic does not seem considerably promote Theoretical calculations confirmed stability interstitial sites ceria surfaces highlighted role Ce‐O frustrated Lewis pair (FLP), Ni‐O classical (CLP) Ni‐Ce activation H molecules. To large extent, theoretical predictions validated by situ spectroscopy under : gaseous environments.

Language: Английский

Citations

34
Tuning the CO2 Hydrogenation Activity via Regulating the Strong Metal–Support Interactions of the Ni/Sm2O3 Catalyst DOI
Jianxiong Zhao, Xiaozhi Liu, Zhengwen Li

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(5), P. 3158 - 3168

Published: Feb. 14, 2024

Strong metal–support interactions (SMSIs), characterized by the encapsulation of metal nanoparticles support oxide, have a significant impact on various heterogeneous catalytic reactions. In this study, we present our investigations tuning performance CO2 hydrogenation through regulating SMSI in Ni/Sm2O3 catalyst. Our results demonstrate that complete Ni with amorphous Sm2O3, achieved H2 reduction, leads to nearly full selectivity CO. contrast, controlled situ thermal postannealing an H2/CO2/N2 mixture, encapsulated Sm2O3 layer can be partially removed and crystallized, as revealed atomic-resolution transmission electron microscopy analyses, which enhanced activity toward CH4. addition, prolonged durations completely remove overlayer, causing decline methanation activity. These findings underscore critical role effect offer valuable insights for produce targeted value-added chemicals.

Language: Английский

Citations

14
Layered High‐Entropy Metallic Glasses for Photothermal CO2 Methanation DOI

Xiwen Yu,

Xue Ding, Yingfang Yao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)

Published: Feb. 14, 2024

Abstract High entropy alloys and metallic glasses, as two typical metastable nanomaterials, have attracted tremendous interest in energy conversion catalysis due to their high reactivity nonequilibrium states. Herein, a novel nanomaterial, layered glass (HEMG), higher state than low‐entropy its crystalline counterpart both the disordered elemental structural arrangements, is synthesized. Specifically, MnNiZrRuCe HEMG exhibits highly enhanced photothermal catalytic activity long‐term stability. An unprecedented CO 2 methanation rate of 489 mmol g −1 h at 330 °C achieved, which is, authors’ knowledge, highest flow reactors. The remarkable originates from abundant free volume internal HEMG, lead extraordinary heterolytic H dissociation capacity. high‐entropy effect also ensures excellent stability for up 450 h. This work not only provides new perspective on mechanism but sheds light great potential future carbon‐negative industry.

Language: Английский

Citations

10
In-situ FTIR Study of Dimethyl Carbonate Synthesis from CO2 and Methanol: Crystal Planes Tailored Lattice Oxygen Mechanism DOI
Jingyang Zhang, Kang Li,

Feigang Zhao

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125096 - 125096

Published: Jan. 1, 2025

Language: Английский

Citations

1
Shape dependency of CO2 hydrogenation on ceria supported singly dispersed Ru catalysts DOI
Z. H. An,

Nan Ma,

Yuanjie Xu

et al.

Journal of Catalysis, Journal Year: 2023, Volume and Issue: 429, P. 115245 - 115245

Published: Dec. 5, 2023

Language: Английский

Citations

20
Liberating C–H Bond Activation: Achieving 56% Quantum Efficiency in Photocatalytic Cyclohexane Dehydrogenation DOI

Ruike Tan,

Xinhui Wang,

Yuxiang Kong

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(20), P. 14149 - 14156

Published: May 8, 2024

The technology of liquid organic hydrogen carriers presents great promise for large-scale storage. Nevertheless, the activation inert C(sp3)–H bonds in hydrocarbon poses formidable challenges, resulting a sluggish dehydrogenation process and necessitating high operating temperatures. Here, we break shackles C–H bond under visible light irradiation by fabricating subnanometer Pt clusters on defective Ce–Zr solid solutions. We achieved an unprecedented production rate 2601 mmol gcat.–1 h–1 (turnover frequency >50,000 molH2 molPt–1 h–1) from cyclohexane, surpassing most advanced thermo- photocatalysts. By optimizing temperature-dominated transfer process, achievable harnessing hitherto wasted infrared sunlight, astonishing 56% apparent quantum efficiency 5.2% solar-to-hydrogen are attained at 353 K. Our research stands as one effective photocatalytic processes to date, holding profound practical significance utilization solar energy exploitation alkanes.

Language: Английский

Citations

7