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4 条记录 (耗时 0.019 秒)

    Method for producing 1,2-propylene glycol using bio-based glycerol
    1.
    发明授权
    Method for producing 1,2-propylene glycol using bio-based glycerol 失效
    使用生物基甘油生产1,2-丙二醇的方法

    公开(公告)号：US07586016B2

    公开(公告)日：2009-09-08

    申请号：US12232982

    申请日：2008-09-26

    申请人： Fang Cui ,  Jing Chen ,  Chungu Xia ,  Haixiao Kang ,  Xinzhi Zhang ,  Jin Tong ,  Xuemei Li

    发明人： Fang Cui ,  Jing Chen ,  Chungu Xia ,  Haixiao Kang ,  Xinzhi Zhang ,  Jin Tong ,  Xuemei Li

    IPC分类号： C07C29/132

    CPC分类号： B01J37/18 ,  B01J23/83 ,  B01J37/03 ,  C07C29/60 ,  C07C31/205

    摘要： This invention disclosed a method for producing 1,2-propylene glycol from bio-based glycerol. In this method, a CuO—CeO2—SiO2 catalyst is filled into a fixed bed reactor, a glycerol solution is flowed into the reactor together with hydrogen gas in a manner of top feeding, and controlling the reaction temperature to be 170˜200° C., the reaction pressure to be 1.0˜5.0 MPa, so as to realize the production of 1,2-propylene glycol from the hydrogenation of glycerol. The catalyst used in this invention can sustain a high selectivity for the target product and a high conversion for glycerol for 500 hours.

    摘要翻译： 本发明公开了一种从生物基甘油生产1,2-丙二醇的方法。 在该方法中，将CuO-CeO 2 -SiO 2催化剂填充到固定床反应器中，以顶部进料的方式将甘油溶液与氢气一起流入反应器，控制反应温度为170〜200℃ 反应压力为1.0〜5.0MPa，从而实现甘油氢化制备1,2-丙二醇。 用于本发明的催化剂可以维持目标产物的高选择性和甘油的高转化率500小时。

    Boron-nitrogen ligand with chiral 1,2-ethylenediamine backbone, and preparation method and use thereof
    3.
    发明授权
    Boron-nitrogen ligand with chiral 1,2-ethylenediamine backbone, and preparation method and use thereof 有权

    公开(公告)号：US11161861B2

    公开(公告)日：2021-11-02

    申请号：US17252280

    申请日：2019-06-21

    申请人： Lanzhou Institute of Chemical Physics, Chinese Academy of Science

    发明人： Senmiao Xu ,  Xiaoliang Zou ,  Haonan Zhao ,  Qian Gao

    IPC分类号： C07F7/08 ,  B01J31/18 ,  B01J31/22

    摘要： A boron-nitrogen ligand with a chiral 1,2-ethylenediamine backbone, a preparing method and used thereof are provided. The structural formula of the boron-nitrogen ligand is as shown in formula (I): wherein R1, R2 and R3 are respectively at least independently selected from substituted or unsubstituted C3-C10 cycloalkyl, C1-C10 alkyl or aryl; R4, R5, R6, R7, R8, R9, R10, R11 and R12 are respectively at least independently selected from hydrogen, halogen, substituted or unsubstituted C1-C10 alkyl, C1-C4 alkoxy, C3-C30 cycloalkyl or aryl; Ar1 and Ar2 are respectively at least independently selected from substituted or unsubstituted C6-C30 aryl. The preparation method of the present application is simple, and can be used for preparing a racemic or chiral boron-nitrogen ligand, which can be used as a catalyst for an asymmetric catalytic reaction and has economic practicability and industrial application prospects.