The Conversion of Methyl Chloride to Methanol—I.

1923 ◽  
Vol 15 (7) ◽  
pp. 682-688
Author(s):  
Ralph H. McKee ◽  
Stephen P. Burke
Keyword(s):  
Methyl Chloride

Isotopic Characterization (2H, 13C, 37Cl, 81Br) of the Abiotic Sinks of Methyl Bromide and Methyl Chloride in Water and Implications for Future Studies.

2018 ◽  
Author(s):  
Axel Horst ◽  
Magali Bonifacie ◽  
Gérard Bardoux ◽  
Hans-Hermann Richnow
Keyword(s):  
Methyl Bromide ◽  
Isotope Fractionation ◽  
Methyl Chloride ◽  
Methyl Halides ◽  
Future Studies ◽  
Halide Exchange ◽  
Isotopic Characterization

In this study we investigated the isotope fractionation of the abiotic sink (hydrolysis, halide exchange) of methyl halides in water.<br>

Copolymerization of Isobutene and Isoprene at “High” Temperature with Syncatalyst Systems Based on Aluminum Organic Compounds

1976 ◽  
Vol 49 (4) ◽  
pp. 937-959 ◽  
Author(s):  
S. Cesca ◽  
M. Bruzzone ◽  
A. Priola ◽  
G. Ferraris ◽  
P. Giusti
Keyword(s):  
Energy Savings ◽  
Ion Pairs ◽  
Great Part ◽  
Methyl Chloride ◽  
Reactivity Ratio ◽  
Experimental Conditions ◽  
Noticeable Increase ◽  
Catalyst Systems ◽  
Kinetics Of ◽  
Kinetics Of Vulcanization

Abstract New catalyst systems based on alkylaluminum derivatives and halogen or interhalogen compounds were found highly efficient in the synthesis of high-molecular-weight IIR at temperatures above − 50°C. The reaction mechanism was studied in detail for the system Et2AlCl + Cl2. The reactions occurring between chlorine, isobutene, Et2AlCl, and the solvent (CH3Cl) were elucidated and studied under various experimental conditions (e.g. presence or absence of light, simultaneous presence of the copolymerization system components, temperature, type of halogen, use of model compound of isobutene). It was concluded that halogenium ions, i.e. Cl+, Br+, or I+, are the initiating species. Kinetic and conductometric investigations showed that scarcely dissociated ion pairs, e.g. Cl+[Et2AlCl2]−, were formed in the absence of monomer; but in the presence of isobutene, a noticeable increase of the electrical conductivity and rapid polymerization occurred. The maximum polymerization rate was first order with respect to the concentrations of monomer, Cl2, and Et2AlCl. In the homopolymerization of isobutene, transfer to monomer and termination reactions were negligible. The MW of IIR was found to be mainly dependent on the concentrations of the catalyst components, on isoprene concentration, and on temperature. The reactivity ratio of isobutene with isoprene was found to be r1=2.5±0.5 at −35°C, while the activation energies relative to MW were −5.8 ± 0.4, kcal/mol for polyisobutene, and −5.7 ± 0.7 and − 4.3 ± 0.5 kcal/mol for IIR containing, respectively, 1.3 and 1.9 mol% of isoprene. The evaluation of some physicochemical and technological properties of typical IIR produced with the system Et2AlCl + Cl2, indicated that isoprene is randomly distributed along the chains and that the MWD is monomodal, while the glass transition temperature, tensile properties, mechanical-dynamic spectra, and kinetics of vulcanization are very similar to those of commercial IIR. Very preliminary data, referring to several classes of new catalyst systems yielding IIR having good properties, were also obtained. The syncatalyst systems here described can work in a homogeneous phase consisting of an aliphatic hydrocarbon besides methyl chloride, still giving IIR with high MW. Therefore, a completely homogeneous process can be envisioned for the synthesis of IIR at −50°C thus avoiding a great part of the fouling problems of the slurry process. The economic advantage of using “high” temperatures of polymerization is briefly discussed in terms of energy savings.

Chemical Considerations in the Incineration of Chlorinated Methanes I-Methyl Chloride

1984 ◽  
Vol 1 (1) ◽  
pp. 1-18 ◽  
Author(s):  
DAVID L. MILLER ◽  
DWIGHT W. SENSER ◽  
VIC A. CUNDY ◽  
RICHARD A. MATULA
Keyword(s):  
Methyl Chloride ◽  
Chlorinated Methanes

Investigation of matrix-free generation of methyl chloride as a reference material

2007 ◽  
Vol 26 (7) ◽  
pp. 744-751 ◽  
Author(s):  
A. Naganowska-Nowak ◽  
P. Konieczka ◽  
J. Namieśnik ◽  
J.F. Biernat ◽  
J. Szczygelska-Tao ◽  
...  
Keyword(s):  
Reference Material ◽  
Methyl Chloride ◽  
Free Generation ◽  
Matrix Free

Determination of Methyl Chloride in Air

1946 ◽  
Vol 18 (5) ◽  
pp. 314-316 ◽  
Author(s):  
J.L. Franklin ◽  
E.L. Gunn ◽  
R.L. Martin
Keyword(s):  
Methyl Chloride

Biogas reforming for syngas production: The effect of methyl chloride

2014 ◽  
Vol 144 ◽  
pp. 353-361 ◽  
Author(s):  
McKenzie P. Kohn ◽  
Marco J. Castaldi ◽  
Robert J. Farrauto
Keyword(s):  
Methyl Chloride ◽  
Syngas Production

Diffusion of Methane and Chloromethanes in Air

1971 ◽  
Vol 49 (1) ◽  
pp. 74-77 ◽  
Author(s):  
M. Cowie ◽  
Harry Watts
Keyword(s):  
Carbon Tetrachloride ◽  
Diffusion Coefficients ◽  
Methylene Chloride ◽  
Methyl Chloride ◽  
Diffusion Cell ◽  
Infrared Spectrophotometry ◽  
Gaseous Diffusion ◽  
Simple Diffusion ◽  
Concentration Changes

The binary gaseous diffusion coefficients of air with methane, methyl chloride, methylene chloride, chloroform, and carbon tetrachloride at 298.2 °K and 1 atm have been determined. A simple diffusion cell was used, in which concentration changes of the diffusing gas were followed by infrared spectrophotometry.

Measurements of methyl chloride in the northwest Atlantic

1994 ◽  
Vol 99 (C4) ◽  
pp. 7821 ◽  
Author(s):  
V. K. Tait ◽  
R. M. Moore ◽  
R. Tokarczyk
Keyword(s):  
Methyl Chloride ◽  
Northwest Atlantic
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