CO2 reduction employing MgH2 for CH4–H2 mixtures production through mechano-chemical processes DOI
Guillermina Amica, F.C. Gennari

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 51, С. 202 - 211

Опубликована: Ноя. 18, 2023

Язык: Английский

Synergistic enhancement of CO2 hydrogenation to C5+ hydrocarbons using mixed Fe5C2 and Na-Fe3O4 catalysts: Effects of oxide/carbide ratio, proximity, and reduction DOI Creative Commons
Sara Najari, Samrand Saeidi, András Sápi

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 485, С. 149787 - 149787

Опубликована: Фев. 17, 2024

CO2 hydrogenation into sustainable chemical feedstocks and fuels is a pivotal focus of energy research. Fe-based catalysts have emerged as promising candidates due to their high efficiency in the toward C2–C4 olefins C5+ hydrocarbons. Fe5C2 known active phase hydrogenation. Therefore, it imperative discern roles phases product distribution. Accordingly, present study, synthesized separately physically mixed with Na-Fe3O4. The effects oxide/carbide ratio, proximity phases, reduction treatment are investigated. results show that adding carbide oxide significantly increases conversion controlled enhanced adsorption. Additionally, closer distance (mixed-powder pellets) between Na-Fe3O4 higher selectivity for C2-C4 hydrocarbons less CH4. Furthermore, graphitized layers reduced catalyst (R-Na-Fe3O4/Fe5C2 (70/30 wt%)) enhance (40 %) (35 at around 40 % conversion. In contrast, amorphous carbon non-reduced (NR-Na-Fe3O4/Fe5C2 favors more paraffins interplay influential factors, i.e., spatial distance, treatment, can result tailoring an efficient formation valuable

Язык: Английский

Процитировано

9
Rational regulation of oxygen vacancies in high-entropy oxides to balance FeOx and FexCy phases for catalytic CO2 hydrogenation to light olefins DOI
Zhijiang Ni, Lin Su, Xiaoyu Chen

и другие.

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 379 - 390

Опубликована: Янв. 31, 2025

Язык: Английский

Процитировано

1
Parametric analysis of CO2 hydrogenation via Fischer-Tropsch synthesis: A review based on machine learning for quantitative assessment DOI Creative Commons
Jing Hu,

Yixao Wang,

Xiyue Zhang

и другие.

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 59, С. 1023 - 1041

Опубликована: Фев. 14, 2024

This review focuses on the parametric impacts upon conversion and selectivity during CO2 hydrogenation via Fischer-Tropsch (FT) synthesis using iron-based catalyst to provide quantitative evaluation. Using all collected data from reported literatures as training dataset artificial neural networks (ANNs) in TensorFlow, three categorized parameters (namely: operational, informatic mass transfer) were deployed assess their conversions (CO2) selectivity. The lump kinetic power expressions among literature reports compared, best fit model is one that was proposed by this work without arbitrarily assuming values of individual partial pressure (CO H2). More than five sets binary systematically investigated find out corresponding evolving patterns Aided machine learning, tailoring product distributions based specific or for optimization purpose practically achievable deploying predictions generated ANNs work.

Язык: Английский

Процитировано

6
Reversal of methanation-oriented to RWGS-oriented Ni/SiO2 catalysts by the exsolution of Ni2+ confined in silicalite-1 DOI
Chia‐Hung Chen, Hongkai Chen, Wei‐Hsiang Huang

и другие.

Green Chemistry, Год журнала: 2023, Номер 25(19), С. 7582 - 7597

Опубликована: Янв. 1, 2023

Ni/SiO 2 -based catalysts derived from the reduction of silicalite-1-encapsulated, ligand-protected Ni 2+ was found to be effective in selective hydrogenation CO via reverse water-gas shift (RWGS).

Язык: Английский

Процитировано

12
Effects of surface groups on Fe/ZnO catalysts for CO2 hydrogenation to olefin DOI
Wang Chen, Xinhua Gao, Jianli Zhang

и другие.

Applied Surface Science, Год журнала: 2024, Номер 658, С. 159820 - 159820

Опубликована: Март 3, 2024

Язык: Английский

Процитировано

5
Crafting a Methanation-Resistant, Reverse Water–Gas Shift-Active Nickel Catalyst with Significant Nanoparticle Dimensions Using the Molten Salt Approach DOI Creative Commons
Yu‐Chuan Lin, Sanjeevan Rajagopal,

P.C. Chou

и другие.

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(40), С. 14771 - 14783

Опубликована: Сен. 20, 2024

Язык: Английский

Процитировано

4
Recent advances in doping engineering of heterogeneous catalyst for carbon dioxide hydrogenation DOI

Qimin Fang,

Qihan Sun,

Ruixia Zhong

и другие.

Materials Today Chemistry, Год журнала: 2025, Номер 46, С. 102770 - 102770

Опубликована: Май 23, 2025

Язык: Английский

Процитировано

0
CO2 hydrogenation to synthetic natural gas with light hydrocarbons on Mn-promoted mesoporous Co3O4-Al2O3 metal oxides DOI Creative Commons
Ye Ji Kim,

Byeong Gi Kim,

Jong Wook Bae

и другие.

Journal of CO2 Utilization, Год журнала: 2024, Номер 81, С. 102724 - 102724

Опубликована: Март 1, 2024

Direct CO2 conversion into synthetic natural gas (SNG, CH4) with simultaneous small production of light paraffinic C2-C4 hydrocarbons to enhance a heating value SNG was investigated ordered mesoporous CoMnAl mixed metal oxides (denoted as m-CoMnAl). hydrogenation activity form CO byproduct formed by reverse water shift reaction (RWGS) strongly affected the MnO2 promoter content in Co3O4-Al2O3 structures. The m-CoMnAl structures proper amount Mn were found be effective methane formation, which mainly attributed presence abundant oxygen vacant sites stable preservation partially oxidized cobalt nanoparticles even under reductive condition. Selective methanation more favorable on highly reduced metallic smaller (m-CoMnAl(0.05)), however, excessive such Mn/Co ratio > 1 (m-CoMnAl(1.0)) revealed less structural stability lower relatively higher selectivity 1.4 % olefin through severe phase segregations Co-Mn-Al selective formations MnCO3 phases.

Язык: Английский

Процитировано

3
Enhancing CO2 hydrogenation performance via the synergistic effects of iron carbides and iron oxides DOI
Yunhao Liu, Qingpeng Cheng,

Shaohui Xiong

и другие.

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 104, С. 66 - 75

Опубликована: Май 22, 2024

Язык: Английский

Процитировано

3
Mediation of Oxidation and Spin States of Fe/P‐CoO2 Core–Shell Structures Catalysts for Oxygen Evolution Reaction DOI Creative Commons
Hong Lv,

Yuanfeng Gao,

Dong‐Sheng Li

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Abstract Low‐cost, high‐performance oxygen evolution reaction (OER) catalysts are crucial for water electrolysis. Herein, the synthesis of low‐cost Fe/P‐CoO 2 amorphous catalyst is reported, achieving an ultralow overpotential 260 mV at 10 mA cm −2 in 1 m KOH. Assembled Pt/C||Co 0.75 Fe 0.25 P/MWCNTs system affords a current density cell voltage only 1.53 V, which much better than that benchmark Pt/C||RuO (1.62 V). Such performance lies ointhe electronic mediation active sites with asymmetric Co‐ and Fe‐coordination structures different d‐band occupancy. The combination Fe‐cationic P‐anionic coordination effectively optimizes adsorption OER intermediates (OH * , O ), promoting direct ─O coupling avoiding formation unstable OOH intermediate. Benefiting from these advantages, Co demonstrate excellent activity stability, surpassing RuO . proposed strategy presents novel approach cost‐effective, highly efficient, durable electrocatalysts alkaline OER.

Язык: Английский

Процитировано

3