75-34-3Relevant academic research and scientific papers
PROCESS FOR THE PRODUCTION OF VINYL CHLORIDE, HEAVIES, AND HYDROGEN CHLORIDE FROM ETHANE
-
Page/Page column 5-6, (2016/06/06)
A process is provided for the chlorination of ethane using chlorine as the chlorinating agent to produce hydrogen chloride (HCl) and vinyl chloride (VCM) and heavies.
Active carbon-supported nickel-palladium catalysts for hydrodechlorination of 1,2-dichloroethane and 1,1,2-trichloroethene
Kamińska,?r?bowata
, p. 9267 - 9280 (2015/03/14)
Norit active carbon-supported Ni-Pd catalysts were prepared, by incipient wetness impregnation, from the metal chlorides NiCl2.6H2O and PdCl2. The catalysts were characterized by temperature-programmed reduction, X-ray diffraction, and scanning electron microscopy, and by temperature-programmed hydrogenation (TPH) of the catalysts after use. When the catalysts were used for gasphase hydrodechlorination (HDC) of 1,2-dichloroethane (1,2-DCA) and 1,1,2-trichloroethene (TCE), very high activity and stability at a relatively low reaction temperature (503 K) were observed. Hydrodechlorination of TCE led to formation of hydrocarbons as the main products. Use of Ni and Ni-Pd catalysts for hydrodechlorination of 1,2-DCA resulted in very high (~100 %) selectivity for ethene. TPH of the catalysts after use for HDC of 1,2-DCA and TCE revealed the presence of carbon and chlorine-containing deposits on the surfaces of the catalysts. Formation of the NiCx fcc phase and the Ni3C hcp carbide phase were detected for the monometallic nickel and Ni95Pd05 catalysts.
A crystallographic and spectroscopic study on the reactions of WCl 6 with carbonyl compounds
Dolci, Sara,Marchetti, Fabio,Pampaloni, Guido,Zacchini, Stefano
, p. 5635 - 5648 (2013/06/05)
WCl6, 1, reacted with two equivalents of HC(O)NR2 (R = Me, Et) in CH2Cl2 to afford the W(vi) oxo-derivatives WOCl4(OCHNR2) (R = Me, 2a; R = Et, 2b) as main products. The hexachlorotungstate(v) salts [{OC-N(Me)CH2CH2CH 2}2(μ-H)][WCl6], 3, and [PhNHC(Me)N(Ph)C(O) Me][WCl6], 4, were isolated in moderate yields from the 1:2 molar reactions of 1 with N-methyl-2-pyrrolidone (in CH2Cl2) and acetanilide (in CDCl3), respectively. The additions of two equivalents of ketones/aldehydes to 1/CH2Cl2 yielded the complexes WOCl4[OC(R)(R′)] (R = Me, R′ = Ph, 5a; R = R′ = Ph, 5b; R = R′ = Me, 5c; R = R′ = Et, 5d; R = H, R′ = 2-Me-C6H4, 5e) and equimolar amounts of C(R)(R′)Cl2. Analogously, WOCl3[κ2- {1,2-C6H4(O)(CHO)}], 5f, and 1,2-C6H 4(OH)(CHCl2) were obtained from 1 and salicylaldehyde. The 1:1 reaction of 1 with acetone in CH2Cl2 resulted in the clean formation of WOCl4 and 2,2-dichloropropane. Compounds 5a,b,f were isolated as crystalline solids, whereas 5c,d,e could be detected by solution NMR only. The interaction of 1/CH2Cl2 with isatin, in a 1:1 molar ratio, revealed to be a new, convenient route for the synthesis of 3,3-dichloro-2,3-dihydro-1H-indol-2-one, 6. The 1:1 reactions of 1 with R′OCH(R)CO2Me (R = H, R′ = Me; R = Me, R′ = H) in a chlorinated solvent afforded the tungsten(v) adducts WCl 4[κ2-OCH(R)CO2Me] (R = H, 7a; R = Me, 7b). 1/CH2Cl2 reacted sluggishly with equimolar quantities of trans-(CO2Et)CHCH(CO2Et) and CH2(CO 2Me)2 to give, respectively, the W(iv) derivatives WCl4[κ2-CH2(CO2Me) 2], 8a, and [WCl4-κ2-{trans-(CO 2Et)CHCH (CO2Et)}]n, 8b, in about 70% yields. The molecular structures of 2a, 3, 4, 5a, 5f, 7a and 7b were ascertained by X-ray diffraction studies.
Non-mercury catalytic acetylene hydrochlorination over bimetallic Au-Co(III)/SAC catalysts for vinyl chloride monomer production
Zhang, Haiyang,Dai, Bin,Wang, Xugen,Li, Wei,Han, You,Gu, Junjie,Zhang, Jinli
supporting information, p. 829 - 836 (2013/04/10)
Several gold-based catalysts including Au, Au-La(iii), Au-Co(ii), and Au-Co(iii) were prepared and assessed for acetylene hydrochlorination, combining with characterizations of low-temperature N2 adsorption/desorption, thermogravimetric analysis, X-ray diffraction, temperature-programmed reduction, inductively coupled plasma-atomic emission spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The best catalytic performance was obtained over Au1Co(iii)3/SAC catalysts with an acetylene conversion of 92% and a selectivity to VCM of 99.9%. It is indicated that the additives of Co(iii), Co(ii) and La(iii) are preferential to stabilize the catalytic active Au+ species and inhibit the reduction of Au3+ to Au 0 in the preparation process of Au-based/SAC catalysts. The addition of these additives can greatly inhibit the occurrence of coke deposition on the catalyst surface, and also inhibit the catalyst sintering, thereby improving the activity and long-term stability of the Au-based catalysts.
RESIST COMPOSITION, METHOD OF FORMING RESIST PATTERN, NOVEL COMPOUND AND METHOD OF PRODUCING THE SAME, AND ACID GENERATOR
-
, (2009/04/24)
A compound represented by formula (I); and a compound represented by formula (b1-1): wherein X represents —O—, —S—, —O—R3— or —S—R4—, wherein each of R3 and R4 independently represents an alkylene group of 1 to 5 carbon atoms; R2 represents an alkyl group of 1 to 6 carbon atoms, an alkoxy group of 1 to 6 carbon atoms, a halogenated alkyl group of 1 to 6 carbon atoms, a halogen atom, a hydroxyalkyl group of 1 to 6 carbon atoms, a hydroxyl group or a cyano group; a represents an integer of 0 to 2; Q1 represents an alkylene group of 1 to 12 carbon atoms or a single bond; Y1 represents an alkylene group of 1 to 4 carbon atoms or a fluorinated alkylene group; M+ represents an alkali metal ion; and A+ represents an organic cation.
METHOD FOR PURIFICATION OF 1,1-DICHLOROETHANE AND PROCESS FOR PRODUCTION OF 1,1-DIFLUOROETHANE USING THIS METHOD
-
Page/Page column 11; 13, (2008/06/13)
1,1-dichloroethane containing a compound having a nitro group and/or a hydroxyl group as a stabilizer is brought into contact with zeolite having an average pore size of 3.4 to 11A and/or a carbonaceous adsorbent having an average pore size of 3.4 to 11A in a liquid phase. A stabilizer contained in 1,1-dichloroethane is efficiently removed by a simple and convenient method and 1,1-difluoroethane can be economically produced.
Process for the preparation of 1-chloro-1-fluoroethane and/or 1,1-difluoroethane
-
Page column 7-8; Table I, (2008/06/13)
The invention relates to a process for the preparation of chloro-1-fluoroethane and 1,1-difluoroethane by reaction of vinyl chloride with hydrogen fluoride, in organic solvent consisting of at least one saturated halogen-containing hydrocarbon.
Anti-inflammatory compounds
-
, (2008/06/13)
This invention relates to anti-inflammatory compounds, methods of making such compounds and methods of using such compounds having the following structure:
Kinetics of the transformation of halogenated aliphatic compounds by iron sulfide
Hayes,Butler
, p. 422 - 429 (2007/10/03)
The transformation of nine halogenated aliphatic compounds, i.e., pentachloroethane (PCA), 1,1,2,2- and 1,1,1,2-tetrachloroethanes (1122-TeCA and 1112-TeCA), 1,1,1- and 1,1,2-trichloroethanes (111-TCA and 112-TCA), 1,1- and 1,2-dichloroethanes (11-DCA and 12-DCA), carbon tetrachloride (CT), and tribromomethane (TBM), by 10 g/L FeS at pH 8.3 was investigated in batch experiments. 11-DCA, 12-DCA, and 112-TCA showed no significant transformation by FeS over ~ 120 days, but the other compounds were transformed with half-lives of hours to days. PCA and 1122-TeCA underwent dehydrohalogenation faster than FeS-mediated reductive dehalogenation reactions. The remaining compounds for which considerable transformation was observed underwent FeS-mediated reactions more rapidly than hydrolysis or dehydrohalogenation. For 1112-TeCA, the dihaloelimination product, i.e., 1,1-dichlroethylene, was the only reaction product observed. For 111-TCA, CT, and TBM, hydrogenolysis products were the only products detected, even though their mass recoveries were significantly 100%. Two simple log-linear correlations between rate constants and either one-electron reduction potentials or homolytic bond dissociation enthalpies were developed, with determination coefficients of 0.48 and 0.82, respectively. These results were consistent with a rate-limiting step involving homolytic bond dissociation. However, neither correlation precisely characterized the reactivity of all the compounds, indicating distinctions among the mechanisms for reductive dehalogenation of the compounds by FeS or the influence of additional molecular or thermodynamic parameters on rate constants.
Reactions of chlorinated vinylsilanes with hydrogen chloride
Lakhtin, V. G.,Ryabkov, V. L.,Kisin, A. V.,Nosova, V. M.,Chernyshev, E. A.
, p. 375 - 378 (2007/10/03)
Catalytic hydrochlorination of a series of chloro(chlorovinyl)methylsilanes was studied. The course of the reaction depends on the number and position of the chlorine atoms in the initial monomers.
