Mass-spectrometric investigation of the structure of a stoichiometric H{sub 2}/O{sub 2}/Ar flame doped with trimetylphosphate and n-tributylphosphate
- Institute of Chemical Kinetics and Combustion, Novosbirsk (Russian Federation)
Incineration of hazardous materials is a promising technique for waste management, however, toxic, hazardous substances such as organophosphorus compounds may be formed in the process. Molecular beam mass-spectrometry was used to study the structure of a stabilized premixed H{sub 2}/O{sub 2}/Ar (25.4%/12.7%/61.9%) flame without and with additives (0.034% TMP-trimethylphosphate or TBP-tributylphosphate) at 80 torr (burner temperature: 85{degrees}C). The behavior of the TMP, TBP in flames and reactions leading to their destruction in flames have been studied. The promoting effect of the additive on the flame was observed, i.e. in the presence of the additive the combustion zone considerably decreases. Mass-spectrometric analysis of the species sampled from different flame zones, performed under soft ionization (at low ionization energies), was used to identify the intermediate and end products of the reactions destroying TMP in the flame, to measure the concentration profiles of some components in the flame related to these reactions. The data obtained testify that the primary products of the reaction of TMP destruction are either dimethylphosphate or dimethylphosphite or both of them. The possible mechanisms of TMP and TBP transformations in the H{sub 2}/O{sub 2}/Ar flame are discussed.
- OSTI ID:
- 254700
- Report Number(s):
- CONF-940813--
- Country of Publication:
- United States
- Language:
- English
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