High-performance nano-structured Ni based catalysts for high-temperature CO2CH4 reforming—Greenhouse gases to syngas

In this study, nano-structured Ni-based catalysts supported on spinel (MgAl2O4) for CO2−CH4 reforming were synthesized and evaluated under 750–900 °C, it performed with extremely high catalytic reactivity that the conversions of CO2 and CH4 were 90% and 97% at 900 °C, with gas hourly space velocity (GHSV) as high as 912,000 ml gCat−1 h−1, which is 76 times higher than the GHSV reported in other literatures. Also, the nano-structured Ni based catalysts showed excellent durability with nearly zero deactivation in 10 h. Interestingly, the Ni-based catalysts did not need initial H2 reduction as required with state-of-the-art reforming catalyst. The fresh Ni-based catalysts mainly consist of NiO and MgAl2O4 crystallites, while the spent ones mostly contain Ni0 (about 10 nm) and MgAl2O4 crystallite.Graphical abstract
Source: Catalysis Today - Category: Chemistry Source Type: research