scholarly journals Shock wave and modeling study of the thermal decomposition reactions of pentafluoroethane and 2-H-heptafluoropropane

2014 ◽  
Vol 16 (21) ◽  
pp. 9797-9807 ◽  
Author(s):  
C. J. Cobos ◽  
L. Sölter ◽  
E. Tellbach ◽  
J. Troe
Keyword(s):  
Shock Wave ◽  
Thermal Decomposition ◽  
Decomposition Reactions ◽  
Modeling Study

Shock wave and modeling study of the reaction CF4 (+M) ⇔ CF3 + F (+M)

2016 ◽  
Vol 18 (26) ◽  
pp. 17592-17596 ◽  
Author(s):  
Gary Knight ◽  
Lars Sölter ◽  
Elsa Tellbach ◽  
Jürgen Troe
Keyword(s):  
Shock Wave ◽  
Thermal Decomposition ◽  
Shock Waves ◽  
Temperature Range ◽  
Modeling Study

The thermal decomposition of CF4 (+Ar) → CF3 + F (+Ar) was studied in shock waves over the temperature range 2000–3000 K. The experiments were shown to correspond to the central part of the falloff curve.

Non-Isothermal Decomposition Kinetic of Polypropylene/Hydrotalcite Composite

2019 ◽  
Vol 19 (11) ◽  
pp. 7493-7501 ◽  
Author(s):  
Sheng Xu ◽  
Min Zhang ◽  
Siyu Li ◽  
Moyu Yi ◽  
Shigen Shen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Decomposition ◽  
Nitrogen Atmosphere ◽  
Heating Rates ◽  
Decomposition Reactions ◽  
Kinetic And Thermodynamic Parameters ◽  
Málek Method ◽  
Boundary Reaction ◽  
Phase Boundary Reaction ◽  
Thermal Stability Of

P3O5-10 pillared Mg/Al hydrotalcite (HTs) as a functional fire-retarding filler was successfully prepared by impregnation-reconstruction, where the HTs was used to prepare polypropylene (PP) and HTs composite (PP/HTs). Thermal decomposition was crucial for correctly identifying the thermal behavior for the PP/HTs, and studied using thermogravimetry (TG) at different heating rates. Based on single TG curves and Málek method, as well as 41 mechanism functions, the thermal decompositions of the PP/HTs composite and PP in nitrogen atmosphere were studied under non-isothermal conditions. The mechanism functions of the thermal decomposition reactions for the PP/HTs composite and PP were separately “chemical reaction F3” and “phase boundary reaction R2,” which were also in good agreement with corresponding experimental data. It was found that the addition of the HTs increased the apparent activation energy Ea of the PP/HTs comparing to the PP, which improved the thermal stability of the polypropylene. A difference in the set of kinetic and thermodynamic parameters was also observed between the PP/HTs and PP, particularly with respect to lower ΔS≠ value assigned to higher thermal stability of the PP/HTs composite.

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.

Comparative studies between the thermal decomposition reactions of lanthanide(III) oxalates and malonates

1991 ◽  
Vol 177 ◽  
pp. 273-284 ◽  
Author(s):  
Kenzo Nagase ◽  
Hiroko Yokobayashi ◽  
Kazuo Muraishi ◽  
Masae Kikuchi
Keyword(s):  
Thermal Decomposition ◽  
Comparative Studies ◽  
Decomposition Reactions

scholarly journals Shock wave study and theoretical modeling of the thermal decomposition of c-C4F8

2015 ◽  
Vol 17 (48) ◽  
pp. 32219-32224 ◽  
Author(s):  
C. J. Cobos ◽  
K. Hintzer ◽  
L. Sölter ◽  
E. Tellbach ◽  
A. Thaler ◽  
...  
Keyword(s):  
Shock Wave ◽  
Thermal Decomposition ◽  
Shock Waves ◽  
Thermal Dissociation ◽  
Theoretical Modeling ◽  
Uv Absorption

The thermal dissociation of octafluorocyclobutane, c-C4F8, was studied in shock waves over the range 1150–2300 K by recording UV absorption signals of CF2.

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