Fundamentals of nitric oxide formation. Quarterly progress report, March 11--June 10, 1977 in fossil fuel combustion

Technical Report · Fri Jul 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5447376· OSTI ID:5447376

Houser, T.

A study of the reaction mechanism which leads to NO formation from fuel-nitrogen by determining the rates and mechanisms of pyridine pyrolysis and HCN formation was continued. The emphasis was on the determination of the rate of formation of HCN in an inert atmosphere since in previous studies it was found to be the major nitrogen-containing product during pyridine pyrolysis at higher temperatures. Using a picric acid-colorometric method for the analysis of HCN, the ratios of moles HCN produced/mole pyridine consumed have been determined at 900, 950 and 1000/sup 0/C. Since these ratios increased with reaction time and were independent at initial concentration, the data were consistent with a consecutive reaction mechanism, the second step of which was first-order. The rate constant for this second step is described by k/sub 2/ = 10/sup 11/./sup 0/ exp(-63,400/RT)(sec/sup -1/). The infrared spectra of the cyanogen oxidation products were further analyzed. Evidence for CO as well as CO/sub 2/ and N/sub 2/O was found, but NO and NO/sub 2/ were clearly not significant products. Only one absorption, at 1030 cm/sup -1/, could not be accounted for by the products listed; the origin of this band is still unknown.

• Research Organization: Western Michigan Univ., Kalamazoo (USA). Dept. of Chemistry
• OSTI ID: 5447376
• Report Number(s): FE-2018-8
• Country of Publication: United States
• Language: English

Related Subjects

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014000* -- Coal
Lignite
& Peat-- Combustion
02 PETROLEUM
025000 -- Petroleum-- Combustion
03 NATURAL GAS
034000 -- Natural Gas-- Combustion
04 OIL SHALES AND TAR SANDS
040500 -- Oil Shales & Tar Sands-- Properties & Composition
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AZINES
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMBUSTION
CYANOGEN
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INORGANIC ACIDS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PYRIDINE
PYRIDINES
PYROLYSIS
SPECTRA
TEMPERATURE DEPENDENCE
YIELDS