THE CHEMISTRY OF SODIUM WITH SULFUR IN FLAMES

被引:30
作者
STEINBERG, M [1 ]
SCHOFIELD, K [1 ]
机构
[1] UNIV CALIF SANTA BARBARA,QUANTUM INST,SANTA BARBARA,CA 93106
关键词
D O I
10.1016/0360-1285(90)90040-A
中图分类号
O414.1 [热力学];
学科分类号
摘要
An experimental and analytical program of sodium/sulfur chemistry has been conducted in a series of fuel rich and lean H2/O2/N2 flames, with and without added sulfur, and covering a wide range of temperatures and stoichiometries. Fluorescence measurements of OH and Na profiles together with sodium line reversal temperature profiles provided a broad data base for kinetic modeling. Analysis indicated NaSO2 to be the only significant sodium/sulfur product formed in the lean flames. NaOS is dominant in the rich flames, coupled with small contributions from NaSO2, NaSH, NaS and NaS2. A bond dissociation energy of D0(NaSO2) = 197 ± 20 kJ mol-1 is derived. Calculations indicate that the linear or triangular structures for NaOS both co-exist in approximately equal proportions in flames. Analyses based on results developed in the study show that Na2SO4 formation is kinetically limited and cannot be a significant gas phase flame product at sodium levels much below 100 ppm. Na2SO4 induced corrosion in combustion systems must result from heterogeneously formed Na2SO4. © 1990.
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页码:311 / 317
页数:7
相关论文
共 21 条
[11]  
JIN S, 1973, J CHEM PHYS, V59, P56
[12]  
MCBRIDE BJ, 1967, FORTRAN 5 PROGR CALC
[13]  
MULLER CH, 1980, ACS SYM SER, V134, P103
[14]  
MULLER CH, 1979, S INT COMBUST P, V17, P867
[16]   KINETIC-STUDY OF THE REACTIONS NA + O2 + N2 AND NA + N2O OVER AN EXTENDED TEMPERATURE-RANGE [J].
PLANE, JMC ;
RAJASEKHAR, B .
JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (08) :3135-3140
[17]   QUANTITATIVE ATOMIC AND MOLECULAR LASER FLUORESCENCE IN THE STUDY OF DETAILED COMBUSTION PROCESSES [J].
SCHOFIELD, K ;
STEINBERG, M .
OPTICAL ENGINEERING, 1981, 20 (04) :501-510
[18]  
SIMONS EL, 1955, CORROSION, V11, P505
[19]   RAMAN SPECTRA OF PRODUCTS OF NA AND K ATOM ARGON MATRIX REACTIONS WITH O2 MOLECULES [J].
SMARDZEW.RR ;
ANDREWS, L .
JOURNAL OF CHEMICAL PHYSICS, 1972, 57 (03) :1327-&
[20]   HIGH-TEMPERATURE KINETICS OF THE REACTIONS OF SO2 AND SO3 WITH ATOMIC OXYGEN [J].
SMITH, OI ;
TSEREGOUNIS, S ;
WANG, SN .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1982, 14 (06) :679-697