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    Home > Chemicals Industry > Rubber Plastic News > PET can be decomposed at room temperature, and the team of Tsinghua professors has developed a new solution for plastic recycling

    PET can be decomposed at room temperature, and the team of Tsinghua professors has developed a new solution for plastic recycling

    • Last Update: 2022-08-29
    • Source: Internet
    • Author: User
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    New progress in plastic recycling! The latest research by the research team led by Duan Haohong, associate professor and doctoral supervisor of the Department of Chemistry of Tsinghua University, China, proposes a sustainable solution for recycling plastics by electrochemical upgrading, which can convert plastics recycling into higher-value chemical materials and hydrogen fuels.
    Helps manage plastic pollution and has the potential to remove plastic waste and turn waste into treasure


    .


    Figure | Duan Haohong (left), Zhou Hua (right) (Source: Duan Haohong's research group) 

    The achievement paper on "Economically Upgrading and Recycling Plastics into Chemical Materials and Fuels" was published online on the evening of the 17th Beijing time in the international academic journal "Nature-Communications"


    .


    Room temperature decomposition of PET with nickel- and cobalt-based catalysts 

    Room temperature decomposition of PET with nickel- and cobalt-based catalysts 

    According to reports, the scientific research team promotes the conversion of polyethylene terephthalate (PET) plastics into higher-value products at room temperature by using nickel-based and cobalt-based catalysts, which are abundant in the earth


    .


    After electrolysis and product separation, the scientific research team converted 1 kg of solid plastic into solid chemicals with commercial value, such as potassium diformate commonly used in feed and hydrogen fuel


    .


    Reduce separation costs 

    Reduce separation costs 

    Duan Haohong said in an interview with a reporter from China News Agency through the Internet that the main uses of PET plastics are beverage packaging and fabrics, such as common mineral water bottles, which are also a type of white pollution


    .


    Figure | Conceptual design: a.
    Conventional route for PET recycling; b.
    Electrocatalytic PET recycling up to commodity chemicals and H2 fuel; c.
    Techno-economic analysis (TEA) of electrocatalytic route at different current densities (Source: Nature Communications) 

    Through research and experiments, the scientific research team found that the polyester structure of PET makes it easy to hydrolyze into terephthalic acid and ethylene glycol in alkaline electrolyte.
    This process is expected to be coupled with electrocatalytic oxidative cracking to realize the preparation from PET.
    high value chemicals


    .


    It is understood that potassium diformate has biological activity, can inhibit the reproduction of harmful microorganisms such as Escherichia coli and Salmonella, and can promote animal growth.
    It is a commercial chemical approved by many countries to replace antibiotics in animal feed


    .


    "Every science and technology from birth to industrialization is not achieved overnight


    .


    Large-scale applications will be promoted in the future 

    Large-scale applications will be promoted in the future 

    He revealed that the research team's research goals in the next few years include synthesizing high-efficiency catalysts, in-depth research on reaction mechanisms, developing new reaction paths, and designing and optimizing reactors
    .
    At the same time, it will also actively establish cooperative relations with Chinese and foreign research teams and related companies to promote the large-scale application and long-term stability evaluation of the PET plastic upgrade recycling process

    .

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