Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 297, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2021.120404
Keywords
Trimetallic catalyst; Hydrogenation reaction; Room temperature; Carbon nanotubes; Interfacial nano-synergy effect
Funding
- National Natural Science Foundation of China [21763011]
- Natural Science Foundation of Jiangxi Province for Distinguished Young Scholars [20192BCB23015]
- Natural Science Foundation of Jiangxi Province of China [20202BAB203005]
- Youth Jinggang Scholars Program in Jiangxi Province [[2019]57]
- China Postdoctoral Science Foundation [2018M642597]
- Foundation of State Key Laboratory of Coal Conversion [J20-21-609]
- Research Foundation of the Education Bureau of Jiangxi Province of China [GJJ190429]
- Postdoctoral Science Foundation of Jiangxi Province of China
- Program of Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology [JXUSTQJBJ2019002]
- Program of Technology Innovation Talents of Ganzhou City, Foundation of State Key Laboratory of Physical Chemistry of Solid Surfaces [202022]
- Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province
- RUDN University Strategic Academic Leadership Program
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This study proposed a novel strategy to design highly efficient and stable multimetallic catalysts for heterogeneous catalytic hydrogenation reactions, utilizing the interfacial nano-synergy effect among different metallic related species. The reduced Rh/NiCo/CNTs catalyst exhibited significantly improved catalytic activity at room temperature compared to single metal catalysts.
Mono-and bimetallic nanoparticles (NPs) supported on carbon nanotubes (CNTs) (Ni/CNTs, Co/CNTs and NiCo/ CNTs) were synthesized at room temperature (RT) via hydrazine hydrate reduction method without any surfactant. The galvanic replacement reaction was exploited to prepare Rh/Ni/CNTs, Rh/Co/CNTs and Rh/NiCo/ CNTs supported nanocatalysts. Prepared nanocatalysts were extensively characterized using an array of advanced analytical techniques. The catalytic performance of the catalysts was evaluated in the hydrogenation of tetralin. Reduced Rh/NiCo/CNTs catalyst (Rh-on-NiCo NP) exhibited high catalytic activity at RT, significantly improved as compared to Rh/Ni/CNTs and Rh/Co/CNTs due to the interfacial nano-synergy effect among different metallic related species (Rh, Ni and Co). In-situ XAS results confirmed the mechanism of the interfacial nano-synergy effect, wherein Rh sites provided activated hydrogen species (H*), and H* was subsequently transferred to the surface of NiCo NPs; while tetralin was adsorbed and activated at NiCo sites, reacting with H* to produce decalin. The present work proposed a novel strategy to design highly efficient and stable multimetallic catalysts for heterogeneous catalytic hydrogenation reactions.
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