F+:Extremely flammable;
75-35-4Relevant articles and documents
Catalytic Dehydrochlorination of 1,1,2-Trichloroethane (TCE) into 1,1-Dichloroethene (DCE) over Cesium Nitrate Supported on Silica Gel
Mochida, Isao,Yasumoto, Yoshinori,Fujitsu, Hiroshi,Kojima, Yasuhiro
, p. 461 - 464 (1992)
Catalytic activity of silica gel-supported cesium salts was examined for the dehydrochlorination of TCE into DCE by recovering hydrogen chloride.Among the salts, CsNO3 showed the best activity, although it was converted into CsCl during the reaction.High dispersion of CsNO3 on silica gel may be a major reason of the high activity.
HIGH CATALYTIC ACTIVITY OF CsCl SUPPORTED ON SILICA GEL FOR THE SELECTIVE DEHYDROCHLORINATION OF 1,1,2-TRICHLOROETHANE
Mochida, Isao,Miyazaki, Tatsuro,Takagi, Takeshi,Fujitsu, Hiroshi
, p. 833 - 836 (1985)
CsCl supported on a particular silica gel dryed at 120 deg C, exhibited a remarkable activity fot selective dehydrochlorination of TCE into 1,1-DCE after the calcination around 500 deg C.The proper heat-treatment before and after impregnation of CsCl on the silica gel strongly influenced the activity of the catalyst.
Mesoporous carbon nitride as a basic catalyst in dehydrochlorination of 1,1,2-trichloroethane into 1,1-dichloroethene
Tian, Cong,Lu, Chunshan,Wang, Bolin,Xie, Xiangzhou,Miao, Yangsen,Li, Xiaonian
, p. 103829 - 103833 (2015)
1,1-Dichloroethene has many applications in industrial production and it holds great promise in developing a vapor phase catalytic dehydrochlorination process. We synthesized a carbon nitride material by dissolving dicyandiamide in N,N-dimethylformamide (DMF) as a precursor and using SBA-15 as a template. A carbon nitride material with a mesoporous structure and textured pores has been obtained and then characterized by N2-adsorption measurements, XRD, HRTEM, EDS and FT-IR. A mesoporous carbon nitride material with a surface area of 350 m2 g-1 and pore volume of 0.72 cm3 g-1 was fabricated, which also possessed triazine N heterocycles with extra amino groups. It is an outstanding heterogeneous base catalyst in the selective catalytic dehydrochlorination of 1,1,2-trichloroethane into 1,1-dichloroethene reaction with a maximum 1,1,2-trichloroethane conversion of 23.96% and maximum 1,1-dichloroethene selectivity of 100%. A total of 110 h stability experiment of the catalyst was provided and the selectivity stayed above 99% all through the experiment and the conversion remained no less than 15% for 35 h.
Nitrogen-Doped Carbon-Assisted One-pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination
Chen, De,Chen, Qingjun,Fuglerud, Terje,Ma, Guoyan,Ma, Hongfei,Qi, Yanying,Rout, Kumar R.,Wang, Yalan
supporting information, p. 22080 - 22085 (2020/10/02)
A bifunctional catalyst comprising CuCl2/Al2O3 and nitrogen-doped carbon was developed for an efficient one-pot ethylene oxychlorination process to produce vinyl chloride monomer (VCM) up to 76 % yield at 250 °C and under ambient pressure, which is higher than the conventional industrial two-step process (≈50 %) in a single pass. In the second bed, active sites containing N-functional groups on the metal-free N-doped carbon catalyzed both ethylene oxychlorination and ethylene dichloride (EDC) dehydrochlorination under the mild conditions. Benefitting from the bifunctionality of the N-doped carbon, VCM formation was intensified by the surface Cl*-looping of EDC dehydrochlorination and ethylene oxychlorination. Both reactions were enhanced by in situ consumption of surface Cl* by oxychlorination, in which Cl* was generated by EDC dehydrochlorination. This work offers a promising alternative pathway to VCM production via ethylene oxychlorination at mild conditions through a single pass reactor.
Efficient Electrocatalysis for the Preparation of (Hetero)aryl Chlorides and Vinyl Chloride with 1,2-Dichloroethane
Liang, Yujie,Lin, Fengguirong,Adeli, Yeerlan,Jin, Rui,Jiao, Ning
supporting information, p. 4566 - 4570 (2019/02/14)
Although the application of 1,2-dichloroethane (DCE) as a chlorinating reagent in organic synthesis with the concomitant release of vinyl chloride as a useful byproduct is a fantastic idea, it still presents a tremendous challenge and has not yet been achieved because of the harsh dehydrochlorination conditions and the sluggish C?H chlorination process. Here we report a bifunctional electrocatalysis strategy for the catalytic dehydrochlorination of DCE at the cathode simultaneously with anodic oxidative aromatic chlorination using the released HCl as the chloride source for the efficient synthesis of value-added (hetero)aryl chlorides. The mildness and practicality of the protocol was further demonstrated by the efficient late-stage chlorination of bioactive molecules.
