A transient isotopic study for investigating important design parameters of NiCo/Ce0.75Zr0.25O2-δ catalyst for the dry reforming of methane

被引：19
作者：
Vasiliades, M. A. [1 ]
Damaskinos, C. M. [1 ]
Djinovic, P. [2 ]
Pintar, A. [2 ]
Efstathiou, A. M. [1 ]
机构：
[1] Univ Cyprus, Dept Chem, Heterogeneous Catalysis Lab, 1 Univ Ave,Univ Campus, CY-2109 Nicosia, Cyprus
[2] Natl Inst Chem, Dept Inorgan Chem & Technol, SI-1001 Ljubljana, Slovenia
来源：
CATALYSIS COMMUNICATIONS | 2023年 / 178卷
关键词：
Dry reforming of methane; Supported NiCo alloy particles; Carbon deposition in DRM; SSITKA; Carbon paths in DRM; CARBON-DIOXIDE; SYNGAS PRODUCTION; NI-CO; BIMETALLIC CATALYSTS; SYNTHESIS GAS; OXYGEN; CH4; CERIA; REACTIVITY; DEPOSITION;
D O I：
10.1016/j.catcom.2023.106674
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of metal loading and particle size of NiCo alloy deposited on Ce0.75Zr0.25O2-delta carrier on the carbon reaction paths of dry reforming of methane at 750 degrees C with respect to the observed long-term activity profiles was elucidated. Small NiCo nanoparticles (7.8 nm) showed progressive deactivation as opposed to the larger ones (43 nm) which exhibited self-regeneration. Towards this goal, appropriate transient kinetic isotopic experiments (use of 18O2 and 13CO2) and other catalyst characterization studies (transient isothermal reduction, XPS, HAADF-STEM-EDX) were conducted. This work paves the way for the design of highly active and coke-resistant reducible metal oxides-supported NiCo.
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页数：16
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