Pt/Cr2O3 Catalysts for the Reverse Water–Gas Shift Reaction: Unraveling Crucial Roles of Interfacial Synergy and Oxygen Vacancies DOI
Chen Zhu,

Xiaowei Wang,

Shaorong Deng

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

The development of high-efficiency platinum-based catalysts and the clarification reaction pathways are fundamental challenges for a reverse water–gas shift (RWGS) reaction. Herein, we prepare Pt/Cr2O3 catalyst with 1% Pt weight loading using an impregnation method low-temperature RWGS This achieved high activity, selectivity, long-term stability. At 350 °C space velocity 24,000 mL h–1 gcat–1, approximately 33.2% CO2 conversion, nearing equilibrium conversion much higher than Pt/Al2O3 Pt/SiO2. species were highly dispersed on Pt/Cr2O3, existing in both Pt0 Ptn+ states, while Cr support primarily existed as Cr3+. Combined situ experiments density functional theory calculations revealed that followed carboxyl (COOH*) route: adsorbed is hydrogenated through its O-end to produce trans-COOH*, which then converts cis-COOH*, by formation CO via dissociation cis-COOH. activity can be attributed interfacial synergy between Cr2O3 presence oxygen vacancies. work provides valuable insights into design high-performance

Language: Английский

Understanding the Curvature Effect on the Structure and Bonding of MoCy Nanoparticles on Carbon Supports DOI Creative Commons
Wei Cao, Marc Figueras, Francesc Viñes

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

The interaction between molybdenum carbide (MoCy) nanoparticles and both flat curved graphene surfaces, serving as models for carbon nanotubes, was investigated by means of density functional theory. A variety MoCy with different sizes stoichiometries have been used to explore adsorption sites modes across curvature degrees. On graphene, off-stoichiometric featuring more low-coordinated Mo atoms exhibits stronger increased electron transfers from the substrate. This preferentially occurs through support C leading formation additional Mo–C bonds. Notably, strength increases on concave surfaces decreases convex showing a strong linear correlation surface curvature. curvature-dependent behavior alters charge state nanoparticles, making them more/less positively charged in concave/convex regions. present results demonstrate that can be effectively tuned manipulating stoichiometry, substrate curvature, local environments, providing valuable guidelines rational design MoCy/C-based catalysts.

Language: Английский

Citations

0
Molybdenum Carbide Nanoparticles in Silicalite-1 Zeolite for CO2-Assisted Propane Dehydrogenation DOI
Bing Xu,

Jun Ma,

Shuo Cao

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 4089 - 4100

Published: Feb. 21, 2025

Language: Английский

Citations

0
Molybdenum Carbide Nanoclusters on N-Doped Carbon Nanocages for Electrocatalytic Hydrogen Evolution DOI
Xue Bai,

Haohua He,

Biao Feng

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Language: Английский

Citations

0
One-Step Synthesis of Nitrogen-Doped α-MoC Supported on SBA-15 with Enhanced Catalytic Activity for the Reverse Water–Gas Shift Reaction DOI
Jie Zhao, Xiaolong Zhang,

Ruru Sun

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

Citations

0
Insight into the key factors of β-Mo2C catalyst for the reverse water gas shift reaction DOI Creative Commons
Qingshan Rong, Ding Wei, Guogang Liu

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(11), P. 8346 - 8353

Published: Jan. 1, 2025

The β-Mo 2 C synthesized at 600 °C demonstrated notably higher RWGS activity compared to those prepared 700 and 800 °C.

Language: Английский

Citations

0
Pt/Cr2O3 Catalysts for the Reverse Water–Gas Shift Reaction: Unraveling Crucial Roles of Interfacial Synergy and Oxygen Vacancies DOI
Chen Zhu,

Xiaowei Wang,

Shaorong Deng

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

The development of high-efficiency platinum-based catalysts and the clarification reaction pathways are fundamental challenges for a reverse water–gas shift (RWGS) reaction. Herein, we prepare Pt/Cr2O3 catalyst with 1% Pt weight loading using an impregnation method low-temperature RWGS This achieved high activity, selectivity, long-term stability. At 350 °C space velocity 24,000 mL h–1 gcat–1, approximately 33.2% CO2 conversion, nearing equilibrium conversion much higher than Pt/Al2O3 Pt/SiO2. species were highly dispersed on Pt/Cr2O3, existing in both Pt0 Ptn+ states, while Cr support primarily existed as Cr3+. Combined situ experiments density functional theory calculations revealed that followed carboxyl (COOH*) route: adsorbed is hydrogenated through its O-end to produce trans-COOH*, which then converts cis-COOH*, by formation CO via dissociation cis-COOH. activity can be attributed interfacial synergy between Cr2O3 presence oxygen vacancies. work provides valuable insights into design high-performance

Language: Английский

Citations

0