Distinct effects of alkali and alkaline-earth metals on Ce–Fe-catalyzed CO2 gasification of straw char: Oxygen-vacancy versus redox-cycle pathways - Deliang Xu; Weiwei Wu; Ruijie Liang; Yi Liao; Shihao Lv; Hong Zhang; Shu Zhang; Wenran Gao; Zhiliang Wu (Journal of Environmental Chemical Engineering, 2026)