Carbon dioxide (CO2), a major greenhouse gas, is considered to be the culprit in global warming. Now Chinese scientists "magic" can turn it into gasoline.
The recently published "Nature-Communications" introduced a result of research by Sun Jian and Ge Qingjie, researchers from Dalian Institute of Chemical Physics, Chinese Academy of Sciences. They discovered a new process for the efficient conversion of CO2. By designing a new type of multifunctional composite catalyst, the direct hydrogenation of CO2 to high octane gasoline was realized for the first time. Relevant processes and catalytic materials have been applied for a number of invention patents and have been hailed as "a breakthrough in the field of catalytic CO2 conversion."
If people can use CO2 as raw material to produce gasoline, it will not only effectively reduce the greenhouse effect caused by CO2, but also reduce the dependence on traditional fossil energy. However, compared with the more active twin brother carbon monoxide, the CO2 molecule is very stable and difficult to activate. Compared with the classical Fischer-Tropsch synthesis route, the catalytic reaction of CO2 with hydrogen molecules is more likely to produce small molecule compounds such as methane, methanol, and formic acid, making it difficult to produce long-chain liquid hydrocarbon fuels.
The Dalian Institute of Chemicals team creatively designed a highly efficient and stable multi-functional composite catalyst. Through the synergistic catalysis of multiple active sites, the catalyst achieves low selectivity of methane and carbon monoxide under conditions close to industrial production, and the selectivity of hydrocarbon fractions in hydrocarbon products reaches 78%. Gasoline fractions basically meet the requirements of the National V Standard for benzene, aromatics and olefins. The catalyst has good stability and can be continuously operated for more than 1000 hours, showing potential application prospects.
This technology not only expands new ideas for the research of CO2 hydrogenation to liquid fuels, but also opens up new avenues for the use of intermittent renewable energy (wind, solar, water, etc.): Hydrogen produced from electrolyzed water and industrial The CO2 exhaust gas is catalytically converted to liquid hydrocarbon fuels that are easy to store and transport. It can not only reduce emissions, but also have significant economic benefits. (Reporter Li Daqing)
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