THE THERMAL DECOMPOSITION OF TETRAMETHYLTETRAZENE AND TETRAETHYLTETRAZENE

1963 ◽  
Vol 41 (8) ◽  
pp. 1911-1918 ◽  
Author(s):  
B. G. Gowenlock ◽  
P. Pritchard Jones ◽  
D. R. Snelling
Keyword(s):  
Thermal Decomposition ◽  
Kinetic Parameters ◽  
Flow System ◽  
Decomposition Mechanism ◽  
Arrhenius Parameters ◽  
Limiting Pressure

The thermal decompositions of tetramethyltetrazene (TMT) and tetraethyltetrazene (TET) have been studied using a flow system. It is shown that both the decompositions occur at, or above, the limiting pressure for unimolecularity, and Arrhenius parameters for both decompositions are obtained. The decomposition mechanism is discussed in relation to the Arrhenius parameters and theories of three-fragment decompositions. Preliminary values of some kinetic parameters for some reactions of dialkylamino radicals are presented.

Complexes of biologically important ligands. I. Ternary complexes of nickel(II) comprising 1,10-o-phenanthrolineazosulfonamide derivatives and alkyldithiophosphates

2006 ◽  
Vol 60 (2) ◽  
Author(s):  
A. Aly ◽  
I. Awad ◽  
M. Abd El-Mottaleb ◽  
K. Abd El-Aal
Keyword(s):  
Thermal Decomposition ◽  
Kinetic Parameters ◽  
Ternary Complexes ◽  
Decomposition Mechanism ◽  
Thermal Decomposition Mechanism ◽  
The Core

Abstract5-[p-(R-Sulfonyl)phenylazo]-1,10-o-phenanthroline (L) and its octahedral complexes of the type [Ni(R2dtp)2(L)] (where R2dtp = diethyl-or dipropyldithiophosphate) with the core NiN2S4 have been prepared and characterized by spectral, magnetic, and thermogravimetric methods. The thermal decomposition mechanism of the compounds was proposed and the kinetic parameters of decomposition were calculated making use of the Coats—Redfern and Horowitz—Metzger equations.

Thermal Decomposition of Diethylketone Cyclic Triperoxide in Polar Solvents

2014 ◽  
Vol 67 (6) ◽  
pp. 881 ◽  
Author(s):  
Gastón P. Barreto ◽  
Elida E. Alvarez ◽  
Gladys N. Eyler ◽  
Adriana I. Cañizo ◽  
Patricia E. Allegretti
Keyword(s):  
Thermal Decomposition ◽  
Hydrogen Atom ◽  
Physicochemical Properties ◽  
Kinetic Parameters ◽  
Rate Constant ◽  
Decomposition Mechanism ◽  
Secondary Alcohols ◽  
Polar Solvents ◽  
Secondary Carbon

The thermolysis of diethylketone cyclic triperoxide (3,3,6,6,9,9-hexaethyl-1,2,4,5,7,8-hexaoxacyclononane, DEKTP) was studied in different polar solvents (ethanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-2-propanol, and acetonitrile). The rate constant values (kd) are higher for reactions performed in secondary alcohols probably because of the possibility to form a cyclic adduct with the participation of the hydrogen atom bonded to the secondary carbon. The kinetic parameters were correlated with the physicochemical properties of the selected solvents. The products of the DEKTP thermal decomposition in different polar solvents support a radical-based decomposition mechanism.

Application of Calculus Equation in Solving Thermal Decomposition Kinetics Parameters of Flame Retardant Wood

2014 ◽  
Vol 983 ◽  
pp. 190-193
Author(s):  
Cai Yun Sun ◽  
Yong Li Yang ◽  
Ming Gao
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Thermal Degradation ◽  
Phosphoric Acid ◽  
Flame Retardant ◽  
Kinetic Parameters ◽  
Flame Retardancy ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Kinetics Parameters

Wood has been treated with amino resins and amino resins modified with phosphoric acid to impart flame retardancy. The thermal degradation of samples has been studied by thermogravimetry (TG) in air. From the resulting data, kinetic parameters for different stages of thermal degradation are obtained following the method of Broido. For the decomposition of wood and flame retardant wood, the activation energy is found to decrease from 122 to 72 kJmol-1.

Consecutive reactions in the thermal decomposition of phenylalkyldiazirines

1977 ◽  
Vol 55 (20) ◽  
pp. 3596-3601 ◽  
Author(s):  
Michael T. H. Liu ◽  
Barry M. Jennings
Keyword(s):  
Thermal Decomposition ◽  
Kinetic Parameters ◽  
Diazo Compounds ◽  
First Order ◽  
Temperature Range ◽  
Decomposition Reactions ◽  
Consecutive Reactions ◽  
Rate Processes ◽  
Subsequent Decomposition

The thermal decomposition of phenyl-n-butyldiazirine and of phenylmethyldiazirine in DMSO and in HOAc have been investigated over the temperature range 80–130 °C. The intermediate diazo compounds, 1-phenyl-1-diazopentane and 1-phenyldiazoethane respectively have been detected and isolated. The decomposition of phenyl-n-butyldiazirine and the subsequent decomposition of its product, 1-phenyl-1-diazopentane, are an illustration of consecutive reactions. The kinetic parameters for the isomerization and decomposition reactions have been determined. The isomerization of phenylmethyldiazirine to 1-phenyldiazoethane is first order and probably unimolecular but the kinetics for the subsequent reactions of 1-phenyldiazoethane are complicated by several competing rate processes.

Thermal decomposition of oxygen difluoride in a flow system

1967 ◽  
Vol 71 (12) ◽  
pp. 3999-4002 ◽  
Author(s):  
Leonard Dauerman ◽  
G. E. Salser ◽  
Yuji A. Tajima
Keyword(s):  
Thermal Decomposition ◽  
Flow System
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