Accession Number : AD0706426

Title :   REACTIONS OF SHOCK-HEATED CARBON DISULFIDE-ARGON MIXTURES. II. KINETICS OF THE DISSOCIATION OF CARBON DISULFIDE,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT VALCARTIER QUEBEC

Personal Author(s) : Arnold,S. J. ; Brownlee,W. G. ; Kimbell,G. H.

Report Date : 09 JUN 1969

Pagination or Media Count : 8

Abstract : The decomposition of shock-heated carbon disulfide diluted with argon was studied using the light emitted at 4500 A from an upper electronic state as a monitor of the concentration. Rate data obtained in the temperature range 1900 to 3500K, the pressure range 1 to 14.5 mm, and the mole fraction range 0.05 to 1.00, indicated that the decomposition obeys mixed order kinetics. A nonlinear statistical analysis led to a value of the rate constant for decomposition at infinite dilution in argon and that for the decomposition in pure CS2. It was concluded that, at finite dilution, an intermediate reaction step, consistent with the transition from the ground state of CS2 to the triplet A(2) state, is required, as has been suggested by other authors. In pure CS2 the reaction was found to be bimolecular. An induction period, observed at temperatures below 2600K, was tentatively attributed to the time required to achieve a critical concentration of S atoms. (Author)

Descriptors :   (*SULFIDES, *DISSOCIATION), SHOCK TUBES, REACTION KINETICS, ARGON, MIXTURES, CARBON COMPOUNDS, CANADA

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE