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As the main component of natural gas, methane is an important fuel, and it is of great significance to convert a large amount of waste biomass resources into biomethane
.
Recently, the team of Wang Feng, a researcher at the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and the team of a distinguished researcher, Wang Min, Dalian University of Technology, proposed a new method for direct methanation of biomass mediated by carrier oxygen defects, which achieved a milder condition of 200 degrees Celsius.
At present, traditional biomethane preparation requires high temperature and high energy consumption, while the biomethane produced by microbial anaerobic fermentation is not pure
.
Therefore, how to directly convert biomass resources into high-purity biomethane under milder conditions has become the focus of research
This time, researchers have developed a catalytic process mediated by carrier oxygen defects, which couples the oxidation of biomass with the catalytic hydrogenation of carbon dioxide to achieve direct methanation of biomass resources under milder conditions
.
Studies have found that biomass molecules can be oxidized to carbon dioxide by the lattice oxygen of the titanium dioxide catalyst loaded with metal ruthenium particles, and oxygen defects are generated on the catalyst
The research provides new ideas for the effective use of biomass resources, but the researchers said that there is still a lot of work that needs to be improved before it is applied, and it is also necessary to comprehensively consider the economic benefits of the entire process and other factors to improve the technological maturity
(Originally published in "China Science News" 2021-07-29 4th edition comprehensive)
