6574-99-8Relevant articles and documents
Method for catalyzing oxidation of amines to generate nitrile by using nonmetal mesoporous nitrogen-doped carbon material
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Paragraph 0019; 0034, (2021/05/08)
The invention discloses a method for preparing nitrile by catalyzing amine oxidation with a non-metal mesoporous nitrogen-doped carbon material catalyst, which is applied to the field of synthesis, the material is prepared by using a nitrogen-containing organic ligand as a precursor and silica sol as a template agent, calcining in the atmosphere of inert gases such as N2 or Ar and then removing the template agent; oxygen or air is used as an oxygen source, the reaction is performed at 80-130 DEG C under the action of ammonia water in the presence of a solvent, the effect is good, and the product still keeps higher activity after being recycled for more than 8 times, and has a wide industrial application prospect. The invention provides a heterogeneous non-metal catalytic system for catalyzing amine oxidation to prepare nitrile for the first time, and compared with a reported metal catalyst, the heterogeneous non-metal catalytic system does not bring metal pollution to a product to influence the effect of cyano drugs.
Hydrothermal synthesis of V-doped hexagonal WO3 microspheres comprising of nanoblocks for catalytic ammoxidation of dichlorotoluene
Li, Xiongjian,Huang, Chi
, (2020/12/17)
V-doped hexagonal WO3 microspheres comprising of nanoblocks were successfully prepared via a facile hydrothermal approach. Several techniques such as XRD, SEM, TEM, FTIR, EDS, TPR, BET and Raman have been performed and the characterization results reveal that V replaced W atoms into the hexagonal lattice-structure. The microspheres possess diameter of about 4.4 μm and the nanoblocks have thicknesses of 40–100 nm and widths of about 150 nm. In addition, the catalytic performance of the obtained V-doped WO3 nanomaterial was investigated in the ammoxidation of dichlorotoluene. The catalytic results indicate that the as-prepared nanostructures show significantly improved selective performance with the selectivities of 3,4-DCBN and 2,6-DCBN reaching up to 89.8% and 86.2%, respectively.
Method for preparing 3,4-dichlorobenzonitrile
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Paragraph 0006; 0017-0019, (2019/10/22)
The invention discloses a method for preparing 3,4-dichlorobenzonitrile. 3,4-Dichlorotoluene is taken as a raw material, benzoyl peroxide is added at 80-110 DEG C, chlorine gas is introduced for a reaction, when the content of the 3,4-dichlorotoluene is less than or equal to 0.03%, the reaction is stopped, 3,4-dichlorobenzotrichloride is prepared, then in the presence of a catalyst, the 3,4-dichlorobenzotrichloride and ammonium chloride react at 170-230 DEG C, when the content of the 3,4-dichlorobenzotrichloride is less than 0.05%, the reaction is stopped, the product is subjected to reduced pressure distillation, and the pure 3,4-dichlorobenzonitrile product is obtained. The method has the advantages that the reaction conditions are mild, the control is easy, the yield is high, no side reaction exists, environmental friendliness is achieved, the cost of reaction raw materials is low, hydrogen chloride gas produced by the reaction can be collected as a by-product hydrochloric acid, andeconomic benefits are increased.