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Title: THE PREPARATION OF $sup 17$O ENRICHED WATER FROM ENRICHED NITRIC OXIDE GAS.

Authors:
;
Publication Date:
Research Org.:
Los Alamos Scientific Lab., N. Mex.
Sponsoring Org.:
USDOE
OSTI Identifier:
4334080
Report Number(s):
LA-3698
NSA Number:
NSA-21-032227
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Technical Report
Resource Relation:
Other Information: UNCL. Orig. Receipt Date: 31-DEC-67
Country of Publication:
United States
Language:
English
Subject:
N20520* -Chemistry-Inorganic, Organic, &; Physical Chemistry-Isotope Exchange &; Isotope Separation; DESIGN; ENRICHMENT; LABORATORY EQUIPMENT; OXYGEN 17; OXYGEN 18; PREPARATION; WATER

Citation Formats

Pavone, D., and Alei, M. Jr. THE PREPARATION OF $sup 17$O ENRICHED WATER FROM ENRICHED NITRIC OXIDE GAS.. United States: N. p., 1967. Web. doi:10.2172/4334080.
Pavone, D., & Alei, M. Jr. THE PREPARATION OF $sup 17$O ENRICHED WATER FROM ENRICHED NITRIC OXIDE GAS.. United States. doi:10.2172/4334080.
Pavone, D., and Alei, M. Jr. Sun . "THE PREPARATION OF $sup 17$O ENRICHED WATER FROM ENRICHED NITRIC OXIDE GAS.". United States. doi:10.2172/4334080. https://www.osti.gov/servlets/purl/4334080.
@article{osti_4334080,
title = {THE PREPARATION OF $sup 17$O ENRICHED WATER FROM ENRICHED NITRIC OXIDE GAS.},
author = {Pavone, D. and Alei, M. Jr.},
abstractNote = {},
doi = {10.2172/4334080},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1967},
month = {Sun Jan 01 00:00:00 EST 1967}
}

Technical Report:

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  • The physical and thermodynamic properties of isotopic substitutions in water molecules were compiled from 1950 to 1961, excluding atomic and nuclear properties. Infra-red spectra were included, however, owing to their increasing importance in connection with the properties of isotopic species. The most important data from each work are presented, according to their form in original tables or graphs. There are 119 references. (auth)
  • The O/sup 17/ nuclear magnetic resonance spectra of solutions with various concentrations of paramagnetic ions were studied. Values for the transverse relaxation time. T/sub 2/, were calculated from the line-width broadening. Chromic ion is much less effective than the other cations in shortening T/sub 2/, which is consistent with the theory that relaxation occurs in the first coondination sphere of all the cations studied except in chromic ion. Lower limits for the rates of exchange of bulk water molecules with those in the first coordination sphere of the cations are calculated. The order of decreasing first-order rate constants is Mn/supmore » ++/> Cu?sup ++/> Co/sup ++/> Ni/sup ++/> Fe/ sup +++/. Saturation experiments on various solutions of paramagnetic ions indicate that Ti increases with increasing concentration of paramagnetic cation in some cases. A study of the effect of pH on T/sub 2/ values shows that within experimental accuracy there exists no dependence on pH over the range 0.9 to 10.5. (auth)« less
  • The program discussed in this report is a two-year two-phase joint UOP-University of Illinois study of the application of improved high resolution solid state nuclear magnetic resonance (NMR) techniques to the characterization of zeolite catalysts. During the first phase of this program very pure, and in some cases isotopically enriched faujasites will be prepared and studied by magic angle sample spinning NMR (VASSNMR) and variable angle sample spinning NMR (MASSNMR) on 500 and 360 MHz (proton frequency) NMR spectrometers. Techniques that will be emphasized are the measurement and analysis of the /sup 17/O NMR properties, /sup 27/Al NMR intensity quantitation,more » and /sup 27/Al and /sup 29/Si NMR relaxation rates. The main effort during the first three month period of the program has been the development of the faujasite preparation techniques required for the preparation of /sup 17/O enriched faujasites. Because of the cost of the /sup 17/O enriched water used in such preparations, it is necessary to make the minimum sized zeolite batch necessary for standard characterization and NMR measurement by techniques that minimize the amount of enriched water per unit weight of product (faujasite). Such techniques have been developed during the first three months of this program and both standard and NMR characterizations made of the resulting faujasites. The results to date demonstrate that pure, highly crystalline faujasites are obtained by these preparation techniques. 2 references, 3 figures, 2 tables.« less