ISSN:
1573-9171
Schlagwort(e):
nitrourea
;
thermal decomposition
;
solid phase reactions
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract The thermal decomposition of nitrourea in the solid phase proceeds with a pronounced self-acceleration, the maximum reaction rate being reached at extremely high extents of conversion. A significant increase in the specific surface is simultaneously observed: the specific surface increases 33-fold by the time when the maximum reaction rate is reached, and the mean particle size becomes equal to 230 Å. In a closed system an increase in the pressure of the gas evolved is followed by an abrupt decrease. A mechanism for the process, in which an intermediate, isocyanic acid, and the heterogeneous character of the reaction play the key role is proposed on the basis of kinetic measurements and data on the composition of the decomposition products.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00698427
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