Methyl Isocyanide as a Key Molecule in Thermal Explosion Theory

1973 ◽  
Vol 51 (23) ◽  
pp. 4001-4003 ◽  
Author(s):  
Huw O. Pritchard ◽  
Brian J. Tyler
Keyword(s):  
Thermal Explosion ◽  
Thermodynamic Data ◽  
Reaction System ◽  
Sufficient Accuracy ◽  
Temperature Range ◽  
Methyl Cyanide ◽  
Explosion Limits ◽  
Methyl Isocyanide ◽  
Thermal Explosion Theory

Thermal explosion limits have been measured in the temperature range 285–351 °C for methyl isocyanide and at 351 °C for mixtures of methyl isocyanide and methyl cyanide. We suggest that the methyl isocyanide isomerization is potentially the best reaction system against which to test thermal explosion theories, but at the present time certain kinetic, thermochemical, and thermodynamic data are not available with sufficient accuracy.

Failure of the scaling laws in the thermal explosion of methyl isocyanide

1977 ◽  
Vol 55 (22) ◽  
pp. 3815-3819
Author(s):  
John L. Collister ◽  
Huw O. Pritchard
Keyword(s):  
Thermal Explosion ◽  
Critical Parameter ◽  
Scaling Laws ◽  
Temperature Measurements ◽  
Methyl Cyanide ◽  
Explosion Limits ◽  
Methyl Isocyanide ◽  
Explosion Limit ◽  
Thermal Explosions ◽  
Reaction Vessels

Thermal explosions of methyl isocyanide have been studied in spherical reaction vessels with volumes in the range 300–5000 ml. The normal inverse dependence of the explosion limit on the square of the radius appears to hold over limited ranges, e.g. from 300–1000 ml and from 2000–3000 ml, but the explosion limits at 1000 ml and 2000 ml are characterized by markedly different values of the critical parameter δc. Temperature measurements were made at and near the vessel walls, but they do not reveal any abnormalities which could be used to explain these results.An appendix reports measurements of the thermal conductivities of methyl cyanide and methyl isocyanide from 200–350 °C.

The enthalpy of isomerisation of methyl isocyanide

1977 ◽  
Vol 55 (14) ◽  
pp. 2634-2636 ◽  
Author(s):  
Mohammad H. Baghal-Vayjooee ◽  
John L. Collister ◽  
Huw O. Pritchard
Keyword(s):  
Thermal Explosion ◽  
Enthalpies Of Formation ◽  
Methyl Cyanide ◽  
Methyl Isocyanide

A controlled thermal explosion in which methyl isocyanide isomerises quantitatively to methyl cyanide has been studied in a calorimeter at 300 K. The enthalpy of isomerisation ΔH = −23.70 ± 0.14 (2 sdm) kcal mol−1, from which values of the enthalpies of formation of both gaseous and liquid methyl isocyanide are calculated.Similar measurements for ethyl isocyanide yield ΔH = −21.5 ± 1.0 kcal mol−1.

Thermodynamic Properties of Methyl Cyanide and Methyl Isocyanide

1940 ◽  
Vol 8 (8) ◽  
pp. 635-636 ◽  
Author(s):  
Raymond H. Ewell ◽  
James F. Bourland
Keyword(s):  
Thermodynamic Properties ◽  
Methyl Cyanide ◽  
Methyl Isocyanide

Mixing of symmetry coordinates in methyl cyanide and methyl isocyanide

1964 ◽  
Vol 20 (6) ◽  
pp. 1065-1070 ◽  
Author(s):  
William H. Fletcher ◽  
Charles S. Shoup ◽  
William T. Thompson
Keyword(s):  
Methyl Cyanide ◽  
Symmetry Coordinates ◽  
Methyl Isocyanide
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