NDLI: Separation of$^{15}$N by chemical exchange in NO, NO$_{2}$−HNO$

Content Provider	Springer Nature Link
Author	Axente, D. Bâldea, A. Teacă, C. Abrudean, M. Horga, R.
Copyright Year	1999
Abstract	The basic isotopic exchange reaction is responsible for the separation of$^{15}$N in the Nitrox system that between gaseous nitrogen oxides and aqueous nitric acid with a single stage separation factor α=1.055 for 10M nitric acid, at 25°C and atmospheric pressure takes place. In order to know what happens in$^{15}$N separation at higher pressure, when the isotopic transport between two phases is improved, a stainless steel laboratory experimental plant with a 1000 mm long × 18 mm i.d. column, packed with triangular wire springs 1.8×1.8×0.2 mm$^{2}$, was utilised. At 1.5 atm (absolute), and 2.36 ml·cm$^{−2}$·min$^{−1}$ flow rate HETP was 7% smaller than at atmospheric pressure and 1.5 times smaller flow rate. HETP at 3.14 ml·cm$^{−2}$·min$^{−1}$ flow rate and 1.8 atm is practically equal with that obtained at atmospheric pressure and 2 times smaller flow rate. The operation of the$^{15}$N separation plant at 1.8 atm (absolute), instead of atmospheric pressure, will permit doubling of the 10M nitric acid flow rate and of$^{15}$N production of the given column.
Starting Page	987
Ending Page	989
Page Count	3
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	240
Issue Number	3
e-ISSN	15882780
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Physical Chemistry Diagnostic Radiology Nuclear Physics, Heavy Ions, Hadrons Nuclear Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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