scholarly journals Infrared Intensities in Methyl Chloride. I. The Fundamental Bands

1983 ◽  
Vol 56 (2) ◽  
pp. 416-421 ◽  
Author(s):  
Shigeo Kondo ◽  
Yoshinori Koga ◽  
Taisuke Nakanaga ◽  
Shinnosuke Saëki
Keyword(s):  
Methyl Chloride ◽  
Infrared Intensities

scholarly journals Infrared Intensities in Methyl Chloride. II. Binary Overtone and Combination Bands

1984 ◽  
Vol 57 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Shigeo Kondo ◽  
Yoshinori Koga ◽  
Taisuke Nakanaga ◽  
Shinnosuke Saëki
Keyword(s):  
Methyl Chloride ◽  
Infrared Intensities ◽  
Combination Bands

Infrared intensities in SiH4 and SiD4

1962 ◽  
Vol 18 (4) ◽  
pp. 1019-1028 ◽  
Author(s):  
D BALL ◽  
D MCKEAN
Keyword(s):  
Infrared Intensities

Infrared intensities in crystalline SF6*

1962 ◽  
Vol 18 (4) ◽  
pp. 1567-1574
Author(s):  
D DOWS ◽  
G WIEDER
Keyword(s):  
Infrared Intensities

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.

Infrared intensities and Coriolis interactions in methylene fluoride

1980 ◽  
Vol 73 (11) ◽  
pp. 5409-5418 ◽  
Author(s):  
Shigeo Kondo ◽  
Taisuke Nakanaga ◽  
Shinnosuke Saëki
Keyword(s):  
Infrared Intensities ◽  
Methylene Fluoride

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
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