In theory, a hypersonic aircraft can fly from London to New York in 90 minutes. However, extreme high temperature levels have always been a major challenge limiting the development of hypersonic flight. The website sciencedaily.com reported on September 7 local time that researchers from the Royal Melbourne Institute of Technology (RMIT) in Australia have developed a super efficient3D printingcatalyst. This catalyst is low-cost and easy to mass-produce. It is not only expected to solve the overheating problem of supersonic aircraft, but also provides a revolutionary solution for thermal management in all walks of life. Related research results are published in the “Chemical Communications” magazine.
Catalyst reaction
Changing the overheating challenge
Or start a new era of catalytic technology
Researchers use zeolite to3D printingThe new generation of catalysts manufactured by the functionalization of the metal lattice structure of the metal lattice may open a new era of catalytic technology development. According to lead researcher Dr. Selvakannan Periasamy, the new catalyst overcomes one of the biggest difficulties in the development of supersonic aircraft-controlling the super-high heat accumulated when the aircraft is flying at more than 5 times the speed of sound.With the advancement of research, the research work of scientists hopes this3D printingCatalysts can change any industrial process that has overheating challenges.
According to the author of the paper, Roxanne Hubesch, fuel that can absorb heat while powering the aircraft is one of the most promising solutions to the overheating problem. The realization of this idea requires the endothermic chemical reaction of highly efficient catalysts as the basis. In addition, the size of the heat exchanger where the fuel is in contact with the catalyst must be as small as possible, because the volume and mass of the hypersonic aircraft are strictly limited.
In order to create a new type of catalyst, the researchers3D printingA metal alloy micro heat exchanger is used, and a layer of zeolite is coated on its surface. Subsequently, they simulated the extreme temperatures and pressures experienced by hypersonic fuel in the laboratory to test the performance of the new catalyst.The researchers found that when3D printingWhen the structure heats up, part of the metal will enter the zeolite framework, and this process is critical to the ultra-high efficiency of the new catalyst.
According to Hubesch,3D printingThe catalyst reactor is like a micro chemical reactor, where the metal and zeolite become very efficient after fusion. This is an exciting new direction in catalysis, but scientists need to do more research to fully understand the process and determine the best combination of catalyst components.
In the next phase, researchers plan to use other analytical methods including X-ray synchrotron technology.3D printingCatalyst to further optimize its structure.They also hope to3D printingThe application scenarios of the catalyst are extended to vehicle air pollution control and indoor air quality improvement.
According to Professor Suresh Bhargava, head of the RMIT Advanced Materials and Industrial Chemistry Center, the output value of the chemical industry related to catalytic technology is as high as trillions of dollars.The third-generation catalytic technology can compete with3D printingThe combination of technology creates a complex design that has never been seen before.Designed by researchers3D printingThe catalyst reactor represents a new type of catalysis method that may completely change the future of catalysis technology. “
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3D printingCatalytic technology that opens tortuous path
3D printingUsed in the field of catalysis, my country has made achievements in the research field.In this regard, the team of Researcher Wang Xiaolong of Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences and the team of Associate Professor Zhou Lincheng of Lanzhou University have combined3D printingThe advantages of technology in the construction of complex devices and free design, manufacturing and molding have been developed3D printingResearch on porous ceramic catalytic materials and devices modified by MOFs for the catalytic degradation of organic pollutants in water.
Preparation of MOFs in situ growth strategy3D printingSchematic diagram of multi-stage porous ceramics
With the help of3D printingIn terms of design and manufacturing advantages, the researchers designed and constructed ceramic frameworks with different structures to optimize the structure and catalytic performance of ceramic catalytic materials.At the same time, the researchers used3D printingThe technology has also easily realized various types of catalytic reaction devices, as shown in Figure 3.3D printingCatalytic filter and3D printingImpeller agitator.The obtained device has a good catalytic degradation effect of organic dyes and can be reused, indicating3D printingMOFs modified porous catalytic materials and devices have good application potential and engineering significance in actual wastewater treatment.
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