Supported Pt Metal Clusters with Different Sizes on TiO2 Nanosheets: Efficient Catalytic Dehydrogenation of Dodecahydro-N-ethylcarbazole DOI

Zhuwei Yang,

Linsen Li,

Xiao Yang

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(45), P. 16524 - 16539

Published: Oct. 29, 2024

An essential step in developing heterogeneous metal catalysts is to locate their active catalytic sites. In contrast large nanoparticles (NPs) and isolated single-atom (SACs), supported clusters (SMCs) possess unique electronic geometric features that contribute improved properties. this study, the loading amount of Pt was quantified as 2.5 wt %, Pt/TiO2 containing with sizes ranging from 1 4 nm were obtained order analyze influence cluster size on dehydrogenation dodecahydro-N-ethylcarbazole (12H-NECZ). The optimal performance achieved 2.5PT-6.5-3.0 (Pt-1.72) catalyst an average 1.72 ± 0.20 nm, there almost no byproducts. Besides, kinetic analysis demonstrated third net stoichiometric reaction rate-limiting step, k3 values significantly appropriate size. Furthermore, a volcano plot existed between specific activities, where Pt-1.72 occupied extreme point (4.87 molNECZ/molPt·min). Combining experimental results previous reports, it could be concluded important regulate 1–2 range, so focused explored. It revealed different caused change structures, only suitable exhibit adsorption activation capacity for reactants during 12H-NECZ dehydrogenation, achieving DFT calculations also confirmed enhanced efficiency three steps, consistent experiments.

Language: Английский

Preparation of highly dispersed Co/TiO2@xCN catalysts with high activity and stability for Fischer-Tropsch synthesis DOI

Nuan Li,

Chenxing Hu, Bo Wang

et al.

Fuel, Journal Year: 2025, Volume and Issue: 396, P. 135310 - 135310

Published: April 14, 2025

Language: Английский

Citations

0
Performance of Co–Cu bimetallic catalysts for catalytic syngas to produce higher alcohols: Influence of the preparation methods, CoCu ratios, and carriers DOI

Xinyu Lyu,

Fei Li,

Kunmou Shi

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 131, P. 82 - 97

Published: April 26, 2025

Language: Английский

Citations

0
Supported Pt Metal Clusters with Different Sizes on TiO2 Nanosheets: Efficient Catalytic Dehydrogenation of Dodecahydro-N-ethylcarbazole DOI

Zhuwei Yang,

Linsen Li,

Xiao Yang

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(45), P. 16524 - 16539

Published: Oct. 29, 2024

An essential step in developing heterogeneous metal catalysts is to locate their active catalytic sites. In contrast large nanoparticles (NPs) and isolated single-atom (SACs), supported clusters (SMCs) possess unique electronic geometric features that contribute improved properties. this study, the loading amount of Pt was quantified as 2.5 wt %, Pt/TiO2 containing with sizes ranging from 1 4 nm were obtained order analyze influence cluster size on dehydrogenation dodecahydro-N-ethylcarbazole (12H-NECZ). The optimal performance achieved 2.5PT-6.5-3.0 (Pt-1.72) catalyst an average 1.72 ± 0.20 nm, there almost no byproducts. Besides, kinetic analysis demonstrated third net stoichiometric reaction rate-limiting step, k3 values significantly appropriate size. Furthermore, a volcano plot existed between specific activities, where Pt-1.72 occupied extreme point (4.87 molNECZ/molPt·min). Combining experimental results previous reports, it could be concluded important regulate 1–2 range, so focused explored. It revealed different caused change structures, only suitable exhibit adsorption activation capacity for reactants during 12H-NECZ dehydrogenation, achieving DFT calculations also confirmed enhanced efficiency three steps, consistent experiments.

Language: Английский

Citations

0