Absorption of NO promoted by strong oxidizing agents: organic tertiary hydroperoxides in n-Hexadecane

Article Abstract:

The feasibility of using organic tertiary hydroperoxides for reducing nitrogen oxide (NO) emissions of agricultural and industrial substances is evaluated. Experiments are conducted in a scrubber reactor system wherein a reaction mixture of nitrogen compunds is treated with different types of organic hydroperoxide solutions at constant operating temperature. Measurements obtained through a gas chromatograph show that cumenyl hydroperoxide performs better that its counterparts in minimizing the NO emissions of nitrogen compounds.

Usage, Peroxides

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Oxalate adsorption at a plagioclase (An47) surface and models for ligand-promoted dissolution

Article Abstract:

An evaluation of oxalate adsorption models at plagioclase surfaces shows that greatest adsorption densities on andesine occur at pH 3 and 8 mM total oxalate. The Freundlich model is also found to have the best fit for the dissolution characteristics because of the absence of the finite adsorption site restrictions. The study raises questions on the assumptions that the occurrence of ligand-promoted dissolutions are greatest and with maximum adsorption at near neutral pH.

Research and Development in the Physical, Engineering, and Life Sciences, Chemistry, Analysis, Chemistry, Physical and theoretical, Physical chemistry, Ligands, Ligands (Chemistry), Substitution reactions

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Upper limit for the rate coefficient for the reaction HO2 + NO2 to HONO + O2

Article Abstract:

Fourier transform infrared spectrometry was used to analyze the rate of production of nitrous acid (HONO) from the reaction between HO2 radicals and NO2. Results revealed that no evidence that HONO was generated by the reaction, whose upper limit for the rate coefficienct was determined to be 5 x 10(super -16) cubic centimeters per molecule per second. This indicates that the reaction cannot be a significant source of atmospheric HONO.

Chemical reaction, Rate of, Chemical kinetics, Chemical reactions, Acids

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