carbon dioxide catalyst deactivation heterogeneous catalysis CH4 CO2 conversion CO2 decomposition CO2 hydrogenation CO2 methanation CO2 reduction CO2 utilization CO2-Fischer-Tropsch (CO2-FT) CO2-H2O photo-co-processing CeO2 CeZr oxide Environmental economics Environmental science, engineering & technology Fischer-Tropsch synthesis H2 production History of engineering & technology Hydrogen Low Temperature Steam Reforming MgO Mo-Co/alkali/Al2O3 catalyst Ni Ni catalysts Ni-Mo sulfide semiconductor Ni-xSi/ZrO2 RWGS reaction Research & information: general Rh4(CO)12 cluster