The reporter learned from the Chinese Academy of Sciences that Chinese scientists have made significant progress in the direct production of olefins from syngas, and achieved high selectivity and direct production of olefins under mild conditions. The results of this research were published on the 6th in the journal Nature.
Olefin is a very important basic chemical raw material, and its added value is extremely high. Many products such as synthetic fibers, synthetic rubbers, synthetic plastics, advanced lubricating oils, high-carbon alcohols, and high-density jet fuels are produced from olefins as raw materials. Olefins are mainly produced by relying on oil.
In recent years, to ease the reliance on petroleum resources, research at home and abroad has focused mainly on non-oil routes, that is, using coal or natural gas resources to directly or indirectly produce olefins. The mainstream process is divided into two steps: First, the synthesis gas (mainly composed of carbon monoxide and hydrogen) is prepared from coal or natural gas, and the synthesis gas is converted into methanol. The second step is to produce olefin products through the methanol conversion route. Undoubtedly, if the reaction steps can be reduced, syngas can be directly and highly selectively synthesized into olefins, which will simplify the production process and achieve lower energy consumption.
The Shanghai Institute of Advanced Studies of the Chinese Academy of Sciences and Shanghai University of Science and Technology have developed a new catalyst. Using it not only can produce olefins directly with syngas under mild conditions (lower temperatures and lower pressures), but also has higher yields. According to Zhong Liangshu, a researcher at the Shanghai Institute of Advanced Study, Chinese Academy of Sciences, this new type of catalyst can directly produce olefins from highly selective synthesis gas. “The selectivity of methane can be as low as 5%, the selectivity of low-carbon olefins can reach 60%, and the selectivity to total olefins can be as high as 80. %the above".
Experts pointed out that based on the characteristics of China's lack of oil, low gas and rich coal resources, the direct production of olefins from syngas has a strong industrial application prospect and high economic benefits.
It is understood that the Shanghai Institute of Advanced Studies of the Chinese Academy of Sciences will cooperate with enterprises in catalyst amplification preparation, reactor design, and process development to achieve industrial demonstration and industrialization as soon as possible. (Reporter Li Daqing)
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