Formation of Carbon Layers by the Thermal Decomposition of Carbon Tetrachloride in a Reactor for MOCVD Epitaxy

2020 ◽  
Vol 54 (8) ◽  
pp. 956-960
Author(s):  
B. N. Zvonkov ◽  
O. V. Vikhrova ◽  
Yu. A. Danilov ◽  
M. V. Dorokhin ◽  
P. B. Demina ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Carbon Tetrachloride

Thermal Decomposition of Carbon Tetrachloride Vapors at Its Industrial Threshold Limit Concentration

AIHAJ ◽  
1973 ◽  
Vol 34 (1) ◽  
pp. 25-37 ◽  
Author(s):  
MADBULI H. NOWEIR ◽  
EMIL A. PFITZER ◽  
THEODORE F. HATCH
Keyword(s):  
Thermal Decomposition ◽  
Carbon Tetrachloride ◽  
Threshold Limit

Catalytic influence of certain foreign gases on the thermal decomposition of di-tertiary butyl peroxide

1959 ◽  
Vol 249 (1257) ◽  
pp. 173-179 ◽  
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Carbon Tetrachloride ◽  
Rate Constant ◽  
Tertiary Butyl ◽  
Extended Theory ◽  
Uncatalyzed Reaction ◽  
Butyl Peroxide ◽  
Limiting Value ◽  
Induced Reaction

Silicon tetrafluoride accelerates the decomposition of di-tertiary butyl peroxide, the rate constant k n,x for a given pressure, n , of the peroxide rising with the fluoride pressure, x , to a limiting value k n ,∞ . This value is different for different values of n . The activation energy of the induced reaction is 27 ± 1 kcal compared with 37 kcal for the uncatalyzed reaction. The products are little different from those of the normal decomposition except that the ratio of methane to ethane is slightly increased. The order of effectiveness of fluorides is SiF 4 > SF 6 > CF 4 , the inverse order of the ease with which they should release fluorine atoms. Carbon tetrachloride causes acceleration comparable with that caused by the silicon fluoride with a much more drastic shift in the product ratios. The mechanism of these actions is discussed in relation to the extended theory of unimolecular reactions.

Thermal decomposition of carbon tetrachloride

1993 ◽  
Vol 97 (9) ◽  
pp. 1914-1919 ◽  
Author(s):  
J. V. Michael ◽  
K. P. Lim ◽  
S. S. Kumaran ◽  
J. H. Kiefer
Keyword(s):  
Thermal Decomposition ◽  
Carbon Tetrachloride

THE PHOTODECOMPOSITION OF CHLORINE DIOXIDE IN CARBON TETRACHLORIDE SOLUTION

1937 ◽  
Vol 15b (12) ◽  
pp. 499-524 ◽  
Author(s):  
J. W. T. Spinks ◽  
H. Taube
Keyword(s):  
Thermal Decomposition ◽  
Carbon Tetrachloride ◽  
Quantum Yield ◽  
Light Intensity ◽  
Quantum Efficiency ◽  
Chlorine Dioxide ◽  
Concentration Effects ◽  
Low Light ◽  
Carbon Tetrachloride Solution ◽  
Chlorine Monoxide

Insolation of carbon tetrachloride solutions of chlorine dioxide initiates a thermal decomposition, the magnitude of which may exceed that for the photoreaction with low light intensity. This thermal decomposition is inhibited by keeping the solutions at 3 °C. or by adding water.In contradiction to the findings of other investigators, it is found that chlorine and oxygen are not the only products of photodecomposition. As products of the photodecomposition of chlorine dioxide at the wave-lengths 3650 and 4360 Å, the oxides Cl2O, Cl2O6, and Cl2O7 as well as chlorine and oxygen appear. The quantum efficiency at λ 3650 Å is 2, and at 4360 Å, 1.In the unsensitized decomposition, concentration effects are observed which are greatly decreased when the solutions are stirred.In the bromine sensitized decomposition with 5460 Å, there is less chlorine monoxide but relatively as much Cl2O6 and Cl2O7 formed as in the unsensitized reaction.In the sensitized decomposition the quantum yield is independent of the concentration of chlorine dioxide, but depends on the light intensity. The observed quantum yield for the sensitized reaction is 0.2 to 0.3.Mechanisms for the photo-reactions have been proposed.

Entsteht bei der thermischen Zersetzung yon Natriumtrichloracetat Phosgen ? / Is Phosgene Formed in the Thermal Decomposition of Sodium Trichloroacetate ?

1978 ◽  
Vol 33 (6) ◽  
pp. 686-687 ◽  
Author(s):  
Eckehard V. Dehmlow ◽  
Karl Heinz Franke
Keyword(s):  
Thermal Decomposition ◽  
Carbon Tetrachloride ◽  
Phase Transfer ◽  
Normal Phase ◽  
Catalytic Reactions

Abstract Decomposition of sodium trichloroacetate in an autoclave yields mainly trichloroacetyl chloride (80%) at 180-200 °C. Carbon tetrachloride, chloroform, and perchloroacetic anhydride are minor products. Only traces of phosgene are formed. These arise from decomposition of perchloroacetic anhydride at temperatures above 200-220 °C (equation (5)). Phosgene is not formed in normal phase transfer catalytic reactions

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