Investigation into the mechanism of NiMg(Ca)bAlcOx catalytic activity for production of solarised syngas from carbon dioxide reforming of methane

► NiMg3AlOx exhibits excellent performance for carbon dioxide reforming. ► Changing the Mg/Al atomic ratio of NiMgbAlcOx affects these catalysts' performance. ► Replacing Mg in NiMg3AlOx with Ca obviously decreases catalyst activity and stability.