COMPARISON OF $sup 18$O/$sup 16$ AND $sup 17$O/$sup 16$ ISOTOPE EFFECTS IN SOME REACTIONS OF HYDROGEN PEROXIDE
A search was made for an isotope effect in oxygen similar to that found for carbon, since O/sup 17/ and C/sup 13/ have nuclear magnetic moments and O/sup 16/ and O/sup 18/ do not. Reactions chosen for the study were some oxidations and reductions of hydrogen peroxide. The method used was that of Cahill and Taube, except that O/sup 17//O/sup 16/ and O/sup 18//O/sup 1/< s6>s ratios were measured in the same sample. The results are tabulated with fractionation factors reported by Cahill and Taube using Fe/sup 2+/ and I/sup -/ reagents in reduction, and Cl/sub 2/ and (MnO/sub 4/)/sup -/ reagents for oxidation. The most likely sources of error were (1) interference by catalytic decomposition and (2) incorrect determination of the H/sub 2/O/sub 2/ fraction used. In the oxidation systems the isotope effect is so small that a great deal of significance cannot be attached to the values obtained. Since the ratios in all cases are close to 2, there is no indication of a difference between the O/sup 18/ /O/sup 16/ and O/sup 17//O/sup 16/ isotope effect t hat cannot be explained by mass differences. Thus, if there is any catalytic effect due to O/sup 17/, it is too small to be observed in the system studied. (B.O.G.)
- Research Organization:
- Univ. of Buffalo
- NSA Number:
- NSA-15-006025
- OSTI ID:
- 4110510
- Journal Information:
- J. Inorg. & Nuclear Chem., Vol. Vol: 15; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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