The kinetic deuterium isotope effect in the thermal dehydration of boric acid |
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| Authors: | Haruhiko Tanaka Satoshi Ohshima Sumio Ichiba Hisao Negita |
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| Institution: | Laboratory of Chemistry, Faculty of School Education, Hiroshima University, Hiroshima Japan;Department of Chemistry, Faculty of Science, Hiroshima University, Hiroshima Japan |
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| Abstract: | The kinetic deuterium isotope effect in the thermal dehydration process from H3BO3 to HBO2(III) was determined using simultaneous TG and DSC. The rate constant ratio of H3BO3 to D3BO3 obtained by the analysis of isothermal TG and DSC curves was found to be smaller than unity. Both activation energy, E, and frequency factor, A, for the dehydration of H3BO3 proved to be larger than those of D3BO3, using non-isothermal TG and DSC. The origin of the deuterium kinetic isotope effect in the thermal dehydration of boric acid is also briefly discussed. |
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| Keywords: | To whom correspondence should be addressed |
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