The destruction chemistry of organophosphorus compounds in flames -- I: Quantitative determination of final phosphorus-containing species in hydrogen-oxygen flames
The combustion of organophosphorus compounds (OPC) is of considerable interest in connection with the disposal of toxic and hazardous chemical wastes and other undesirable substances containing phosphorus, including chemical warfare agents (CWA) such as the nerve agents sarin and VX. This paper presents the results of a quantitative determination of the composition of final phosphorus-containing products (PO, PO{sub 2}, HOPO, and HOPO{sub 2}) from the destruction of the organophosphorus compounds trimethyl phosphate (TMP) and dimethyl methylphosphonate (DMMP) in premixed hydrogen-oxygen flames. The flames were stabilized on a flat burner at 47 Torr and probed using molecular beam mass spectrometric techniques. Quantitative analysis of these species is difficult, due to problems with mass spectrometric calibrations. Also these compounds are unstable under normal conditions and are not readily available To solve this problem a material balance equation for the element phosphorus has been used to analyze the results is stoichiometric, rich, and lean flames, doped with different amounts of TMP and DMMP. A system of linear nondegenerate materials balance equations was solved using the Singular Value Decomposition (SVD) algorithm. The calculated calibration coefficients for the phosphorus species have allowed their mole fractions to be derived. How the concentrations of PO, PO{sub 2}, HOPO, and HOPI{sub 2} depend on the initial concentrations of DMMP or TMP and on the mixture's composition has been studied. The measurements are compared to the Results of thermochemical equilibrium calculations.
- Research Organization:
- Inst. of Chemical Kinetics and Combustion, Novosibirsk (RU)
- OSTI ID:
- 20000569
- Journal Information:
- Combustion and Flame, Vol. 118, Issue 4; Other Information: PBD: Sep 1999; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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