Non-isothermal reduction kinetics and mechanisms by hydrogen of CuAl spinel solid solution

Autor: Ya-Jie Liu, He-Fei Kang, Liang-Liang Zhang, Cai-Long Xue, Li-Jing Yuan, Xiao-Ning Hou, Lei Zhang, Zhi-Xian Gao
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Catalysis Communications, Vol 173, Iss , Pp 106570- (2023)
Druh dokumentu: article
ISSN: 1873-3905
DOI: 10.1016/j.catcom.2022.106570
Popis: The non-isothermal reduction kinetics by hydrogen of CuAl spinel solid solution was investigated using H2 temperature-programmed reduction at different heating rates methodology. The reduction process consists of four stages in terms of the reduction degree (α), corresponding to the reduction of non-spinel Cu2+, easily reducible spinel Cu2+, hardly reducible spinel Cu2+ (I), and hardly reducible spinel Cu2+ (II). The activation energy was between 83.2 and 122.1 kJ mol−1 when α
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