Accession Number : AD0741499

Title :   Use of the Infrared Spectroscopy Method to Study Thermal Decomposition of Solids in a Gas Flow,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Sotnikov-Yuzhnik,Yu. M. ; Pavlyuchenko,M. M. ; Prodan,E. A.

Report Date : 24 JAN 1972

Pagination or Media Count : 11

Abstract : The evolution kinetics of one of several gaseous reaction products of the thermal decomposition of solids can be studied by means of different methods suitable for determining the concentration of a given product in a flow of a foreign gas. In their discrimination capacity they are usually inferior to the radiometric method, but enable one to work with standard untagged substances. The report primarily describes the spectral methods used. Infrared spectroscopy was used to study the evolution of carbon dioxide in the case of thermal decomposition of manganese carbonate under nonisothermic conditions. Essentially the method consisted of sending the carrier gas, which carries the evolved gaseous reaction products, through the reaction vessel of the Chevenard balance to the gas cuvette of the spectrophotometer. As the temperature increases a change in intensity of one of the infrared carbon dioxide absorption bands is observed. (Author)

Descriptors :   (*DECOMPOSITION, *INFRARED SPECTROSCOPY), (*PYROLYSIS, INFRARED SPECTROSCOPY), REACTION KINETICS, CARBON DIOXIDE, CARBONATES, USSR

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE