China and Japan jointly develop new technologies for the preparation of liquid fuels

Finding new ways and technologies to replace crude oil has always been a career for scientists. Toyama University professor Yu Fanli team and Xiamen University professor Wang Ye team jointly achieved innovative results in the study of Fyto synthetic catalysts, providing a simple and effective method for the direct synthesis of different types of liquid fuels. Recently, the results were published in Nature - Catalysis, which
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with the social and economic development, people's demand for gasoline, aviation kerosene, diesel and other liquid fuels is growing, while domestic oil resources are scarce, the external dependence of crude oil has exceeded 60%.
"synthetic gas (carbon monoxide and hydrogen) can be obtained from non-petroleum carbon resources such as coal." Wang Ye told China Science Daily that the aim of the study is to develop new methods and technologies for the direct preparation of gasoline, aviation coal and diesel by coal-based synthesizers.
synthesis is a process in which liquid hydrocarbons or hydrocarbons are synthesized using synthesizers as raw materials and under appropriate conditions. However, the traditional Feto synthesis technology of synthetic liquid fuel is widely distributed and difficult to control. Due to the low selectivity of liquid fuels for specific fractions, the Feto product needs to be further hydro-refined.
"This study solves the problem that the selectivity of traditional Fyto synthesis is difficult to regulate by designing dual-functional catalysts." Wang Ye said.
two teams have a good research foundation in the selective regulation of Fyto synthetic products. Wang Ye team found that the use of zeolite molecular sieves with a meso-hole structure can significantly improve the selectivity of specific distillate liquid fuels. The team found that the capsule structure Feto synthesis catalyst, wrapped in a micro-porous zeolite molecular sieve, had a prominent gasoline selectivity.
On this basis, they used Y-type molecular sieve as carrier, load cobalt nanoparticles, successfully constructed a dual-functional catalyst, which was used to improve the selectivity of Fyto synthetic liquid fuel, and successfully realized the selective regulation of product by changing the acidity and hole structure of Y-type molecular sieve, and achieved 74%, 72% and 58% selectivity of gasoline, aviation coal and diesel distillation, respectively.
Compared with traditional technologies, which are only suitable for large-scale industries with higher investment costs, this study can save hydrogenation refining and obtain the corresponding liquid fuel directly with high selectivity, and the separation process is more simplified, resulting in significant cost savings, reduced energy consumption, and suitable for small- and medium-sized liquid fuel production with low investment costs in dispersed coal and gas fields.
"This approach is expected to develop into a new generation of coal-based oil catalyst technology." From the perspective of basic research, Wang said, further catalysts will need to be designed in the future to improve the selectivity of specific products and make product distribution more concentrated, especially to reduce the selectivity of low-carbon alkanes, including methane. In addition, the long-term stability of dual-function catalysts needs to be further verified. "The laboratory technology of dual-function catalysts is basically mature, and it is possible to test and solve the corresponding engineering and technical problems to move towards industrialization."
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