About photosynthesis NO to incoherent irradiation
DOI:
https://doi.org/10.15587/1729-4061.2013.19172Keywords:
N2, photolysis of NO2, singlet atom of oxygen, radiation sources, NO yieldAbstract
The paper considers the alternative possibility of obtaining salt-forming nitrogen oxides by photochemical oxidation of atmospheric nitrogen using sources of incoherent radiation.
It is shown that nitrogen dioxide, which is capable of two-photon absorption, in the process of which its photolysis is realized with the formation of singlet oxygen atom of О (1D) configuration and NO, can act as an oxidant. The latter, being oxidized, turns into NO2, and thus, the initial reagent is not lost in the system.
In large-scale productions, it is rather difficult to carry out coherent (laser) radiation of reagents, therefore, the influence of incoherent irradiation on a product yield is studied in the paper, and mercury lamps with different radiation spectra were selected as sources.
It was experimentally established and theoretically proved that maximum additional amount of NO is formed when using lamps DRT-125 with the operating range of wave lengths of 230-445,3 nm.
The research results can be used in the chemical industry, namely in production of nitric acid for the transition to a non-catalytic ammonia-free method of obtaining NO, and in the production of adipic acid to reduce the consumption index on nitric acid, where flue gases contain molecular nitrogen, nitrous oxide and oxygen. Besides the economic aspect, the ecological aspect – reduction of greenhouse nitric (I) oxide emissions is observed in the paper.References
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