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    Home > Food News > Food Articles > Chinese scholars have made progress in the field of selective conversion of tyrino

    Chinese scholars have made progress in the field of selective conversion of tyrino

    • Last Update: 2021-02-25
    • Source: Internet
    • Author: User
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    Recently, the reporter learned from South China University of Technology, the university's Li Xuehui team and Oxford University professor Shik Chi Edman Tsang and the Chinese Academy of Sciences Institute of Process Engineering Associate Researcher He Hongyan and others jointly attacked, in the field of ligand selective transformation research has made important progress. The findings, published in the journal Chem, focus on selective oxidation fracture ligand aromatic ring preparation of Malay acid dethyl ethyl esters.
    At present, the vast majority of carbon-containing bulk chemicals are based on non-renewable fossil resources such as oil and coal, obtained through a complex conversion process, which inevitably brings about a series of problems such as greenhouse effect, climate change and environmental pollution. For example, Malay esters are an important class of bulk chemicals, the traditional method is through benzene or butane and other petroleum-based raw materials oxidation to produce, there are many safety, environmental and other issues.
    biomass resources, characterized by a wide range of sources, large yields, renewable and their components close to current bulk organic chemicals, are considered to be an important way to solve these problems by efficiently converting them into platform compounds or chemicals.
    it is understood that the important part ligands of biomass, the world's most abundant reserves of renewable aromatic polymers, ligands will be deposed to prepare high value-added aromatic compounds technology, has attracted much attention. However, due to the complex structure of the herononin, which leads to the low yield and selectivity of its demeration products, how to realize the selective transformation of the lynum is the key to the efficient use of the woody and biomass.
    In order to break through this technical bottleneck, different from the conventional way to obtain aromatic compounds, Li Xuehui's team proposed a new strategy to achieve high-value conversion of ligand by selectively breaking the phenyl ring structure of ligands and strengthening them through in-place esterification. Under mild conditions (160 degrees C, 5 h), the production rate of metrate is 404.8 mg/g and 72.7% selectivity.
    , the researchers further analyzed and found that the cu-plus structure of the five-position copper-ion liquid phosphorus tungstenate was the catalytic activity center of the process.
    In addition, the team and its collaborators also innovatively designed a new type of micro-emulsion reactor system, based on the structural characteristics of the parentality of the listeride molecules, using the self-surface activity mode of the canonin, through the interface to strengthen the effect, to achieve the high-efficiency selective detoxification and self-breaking milk process of the melanin, showing a good prospect for industrial application.
    On this basis, the researchers further designed and constructed a series of highly selective desormeration systems of the main structure units and chemical bonds based on the differences between the main structure units and chemical bonds of the canonin and combined with the calculation of DFT, and realized the selective fracture and cutting of the chemical bonds and structural units of the characteristics of the heronin. For example, the Fe-based functional ionic liquid system designed and constructed enables highly selective tailoring of H-structure units in ligand molecules and the preparation of high value-added and versatile MPC cinnamonate.
    that the research has been funded by the National Natural Science Foundation of China (project approval number: 21736003) and other projects. (Zhang Siwei) To
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