Carbon dioxide (CO2) methanation reaction has attracted renewed interest since the Power‐to〨as (PtG) concept emerges as a promising alternative for CO2 emissions abatement using surplus renewable electricity. Although the reaction has been reported for more than a century, improvements in the ...
Among the catalytic reactions of CO2, hydrogenation of CO2, the so-called methanation reaction, is a suitable technique for the fixation of CO2. This technique can be used to convert exhausted CO2 into methane (CH4), which can be recycled for use as a fuel or a chemical as well as by ...
In recent years, enormous efforts have been devoted to alleviating global energy demand and the climate crisis. This has instigated the search for alternative energy sources with a reduced carbon footprint. Catalytic hydrogenation of CO2to CH4, known as the methanation reaction, is a pathway to ut...
Since the composition of the catalyst has a significant influence on the reaction's performance, the doped catalysts with a single metal or more exhibit high activity16. Various transition and noble metals doped on metal oxides and mesoporous materials can be used for the CO2 methanation reaction....
Steady-state methanation was studied at several temperatures between 100 and 500 °C. We find that the methanation reaction takes place on the reduced Ce0.95Ru0.05O2, and the role of the dopant is to make the reduction possible at lower temperature than on pure ceria. We discuss the ...
CO2hydrogenation to methane (methanation) and CO (RWGS) are usually two parallel processes, depending on the catalytic materials and reaction conditions. The produced methane via CO2methanation can serve as the principal component of synthetic natural gas, whereas the produced CO via RWGS can be int...
The electrochemical CO2 reduction reaction towards value-added fuel and feedstocks often relies on metal-based catalysts. Organic molecular catalysts, which are more acutely tunable than metal catalysts, are still unable to catalyse CO2 to hydrocarbons u
In the present work, the effect of Ru loading on CeO2 supports has been studied for the CO2 methanation reaction, and catalysts with different Ru loading in the 1–5 wt. % range have been prepared, characterized, and tested. The optimum Ru loading has been found to be 2.5 wt. %. ...
对于低载量MoCx基纳米催化材料而言,通过降低MoCx的粒径很难进一步提升RWGS活性,这归因于RWGS反应中CO2和H2会在MoCx中的Mo活性位点发生竞争吸附,从而单一的Mo活性位点不能同时具有高效催化转化CO2和H2的能力。本章采用在碳纳米管上制备双活...
Fig. 2. Methanation activities of Ru/TiO2and RuO2/TiO2catalysts in the photothermal (PT) and thermal (T) methanation processes: (a) CO2conversion rate, (b) CH4selectivity, (c) Arrhenius plots associated with the CO2reac...