Acridine, nitrogen contents

See also Acid precipitation Acidic gases, collection from coal-fired power plants, 84-91 Acridine, nitrogen contents, 305 Acridine char... 

Three isomers are described in the literature. No azido or diazido-compds were found in Beil or CA through 1956. Monanitro-, dinitro and trinitro-acridines are described in the literature but none of them are reported to be expl. If tetranitroamino-acridine was known it very likely would be an expl because its NOa nitrogen content is ca 15%. This compd however, is not listed in Beil or CA through 1956... 

The oxidation of chars prepared from nitrogen-containing precursors has been investigated. Chars produced from the nitrogen-containing compounds acridine and phenanthridine were oxidized at atmospheric pressure at temperatures of 773-873 K. The relative rates of nitrogen and carbon release and the formation of NO have been determined in relation to char nitrogen content and precursor type. 

It was also found that the conversion of released nitrogen to N0X decreased with increasing reaction temperature, increasing char nitrogen content (for both acridine and phenanthridine-based chars) and with increasing sample weight (bed height). 

The carbonization of pure organic compounds such as carbazole, phenazine, acridine (for formulas, see Figure 7.2) has also been studied under 7.5 Mbar argon pressure [23], Volatile compounds such as benzene, pyridine, pyrazine, quinoline, and phenazine have been calcined at 1073 K in sealed quartz glass tubes [24], Bent carbon nanotubes and coils with a nitrogen content of about 1% were formed when pyridine, 5-methylpyrimidine, or i-triazine (see Figure 7.2) were decomposed on small catalytic cobalt particles at 1123 or 1373 K [25], Carbon nanotubes with about 2% N were produced in excellent yield and free of other carbon materials by pyrolysis of pyridine vapor at 1373 K in an argon stream with admixed iron pentacarbonyl, [Fe(CO)s] [26], In another study, pyrrole vapor has been catalytically decomposed on nickel sheets at 1073 K [27],... 

A sample of known nitrogen content will be run after each calibration. The sample can also be analyzed periodically throughout a series of analyses to check the functioning of the instrument and the validity of the calibration curve. This sample can be an National Institute for Standards and Technology Standard Reference Material (SRM) material, an acridine in xylene standard prepared to have a nitrogen value not used to calibrate the instrument, or any other material that has been analyzed repeatedly such that sufficient data are available to determine a statistical mean. The results of the analysis of the known sample will be within 10 % of the certified or accepted value for the operation and calibration of the instrument to be considered acceptable. If the results are not within 10% of the accepted value, perform appropriate corrective maintenance on the instrument and repeat the calibration procedure described in 9.4. 

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