75-09-2Relevant articles and documents
Mathai,Le Roy
, p. 189 (1962)
Kinetics and mechanism of the gas phase reaction of atomic chlorine with CH2ICl at 206-432 K
Bilde,Sehested,Nielsen,Wallington,Meagher,McIntosh,Piety,Nicovich,Wine
, p. 8035 - 8041 (1997)
The title reaction was studied using two different experimental techniques: laser flash photolysis with resonance fluorescence detection of Cl atoms and continuous photolysis with FTIR detection of end products. Over the temperature range 206-432 K the rate constant for reaction of Cl atoms with CH2ICl is given (to within ±15%) by the Arrhenius expression k1 = 4.4 × 10-11 exp(195/T) cm3 molecule-1 s-1, which gives k1 = 8.5 × 10-11 cm3 molecule-1 s-1 at 298 K. Variation of the total pressure of N2 diluent over the range 5-700 Torr at 295 K had no discernible (2 the reaction proceeds via iodine transfer to give CH2Cl radicals. As part of this work the rate constant k(CH2Cl+O2+M) was measured at 295 K in the presence of 1-800 Torr of N2 diluent. The results were well described by the Troe expression with a broadening factor Fc of 0.6 and limiting low- and high-pressure rate constants of k0 = (1.8 ± 0.1) × 10-30 cm6 molecule-2 s-1 and k∞ = (3.3 ± 0.3) × 10-12 cm3 molecule-1 s-1. The results are discussed with respect to the available literature for reactions of Cl atoms with halogenated organic compounds and the potential role of the title reaction in atmospheric chemistry.
Chlorodefluorination of Fluoromethanes and Fluoroolefins at a Lewis Acidic Aluminum Fluoride
Braun, Thomas,Pan, Xinzi,Scholz, Gudrun,Talavera, Maria
, (2022/03/27)
Chlorodefluorination reactions of fluoromethanes and fluoroolefins catalysed by the highly Lewis acidic nanoscopic aluminum chlorofluoride (ACF, AlClxF3?x, x≈0.05–0.3) in the presence of ClSiEt3 were studied. Both fluoromethanes and fluoroolefins convert under mild reaction conditions by fluorine-chlorine exchange steps into chlorinated fluoro derivatives. MAS NMR studies provided information on the interaction of silanes and hexafluoropropene with the ACF surface.
Method of Converting a Brominated Hydrocarbon to a Chlorinated Hydrocarbon
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Paragraph 0183-0186, (2021/02/19)
The present invention provides a method of converting a brominated hydrocarbon to a chlorinated hydrocarbon that involves contacting together the brominated hydrocarbon and a chlorinated ion exchange resin that has a water content of less than or equal to 30 percent by weight, based on the total weight of the chlorinated ion exchange resin and the water. The brominated hydrocarbon includes at least one replaceable bromo group, where each replaceable bromo group is independently covalently bonded to an sp3 hybridized carbon. Contact between the brominated hydrocarbon and the chlorinated ion exchange resin results in replacement of at least one replaceable bromo group of the brominated hydrocarbon with a chloro group, and correspondingly conversion of at least a portion of the brominated hydrocarbon to the chlorinated hydrocarbon.
A process of preparing methyl chloride using multistage reaction
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Paragraph 0092-0100; 0112, (2020/06/10)
The present invention relates to a method of producing methyl chloride by multistage reactions. The method of the present invention comprises: a) a chlorination step for sufficiently increasing the conversion rate of methane, which is an initial reactant; and b) a subsequent reaction step for actively utilizing hydrogen chloride (HCl), which is a hazardous byproduct of chlorination, efficiently treating harmful hydrogen chloride, and at the same time, improving the overall production of methyl chloride.COPYRIGHT KIPO 2020