Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2005, Vol. 16 ›› Issue (6): 352

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Simulataneous analysis of react ivity of anilines in the hydrogen- isotope exchange reaction

ZHAO Dong-Yu1,2, IMAIZUMI Hiroshi3, LEI Qing-Quan2, ZHAO Dong-Mei1   

  1. 1 School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China;
    2 College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150040, China;
    3 Department of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, Niigata-shi 950-2181, Japan
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ZHAO Dong-Yu, IMAIZUMI Hiroshi, LEI Qing-Quan, ZHAO Dong-Mei. Simulataneous analysis of react ivity of anilines in the hydrogen- isotope exchange reaction.Nuclear Science and Techniques, 2005, 16(6): 352

Abstract: In order to reveal the reactivity of a functional group in an aromatic compound having two substituents in the aromatic ring, the hydrogen-isotope exchange reaction (T-H exchange reaction) between tritiated water vapor (HTO vapor) and 4-amino-2-methylbenzenesulfonic acid (and 5-amino-2-methylphenol) were dynamically observed at 50℃ (and 70℃) in a gas-solid system. Consequently, the fact that the specific activity of the acid increased with time was obtained, and the T-for-H exchange reaction occurred. By applying the A"-McKay plot method to the data observed, the rate constant of each functional group for the reaction was obtained. After the additive property of the Hammett’s rule was applied to this work, the new substituent constants were obtained. From the above-mentioned, the following four items have been confirmed: (1) the reactivity of the functional groups can be dynamically analyzed, and the A"-McKay plot method is useful to analyze the reactivity; (2) the additive property of the Hammett’s rule is applicable to quantitative comparison of the reactivity of the functional groups; (3) the reactivity of the functional groups can be simultaneously analyzed by using the A"-McKay plot method in the T-H exchange reaction; and (4) the method used in this work is also useful for analyzing the reactivity of a certain material having some kinds of functional groups.

Key words: Trisubstituted aromatic compound, Gas-solid system, T-H exchange reaction, Hammett’s rule, A"-McKay plot method, Rate constant