Studies on Thermal Decomposition of Iridium and Ruthenium. Chlorides

DOI Web Site
  • KAMIYA Nobuyuki
    Department of Energy Engineering, Faculty of Engineering, Yokohama National University
  • HOSHINO Ken-ichi
    Department of Energy Engineering, Faculty of Engineering, Yokohama National University
  • OTA Ken-ichiro
    Department of Energy Engineering, Faculty of Engineering, Yokohama National University

Bibliographic Information

Other Title
  • イリジウムおよびルテニウム塩化物の熱分解挙動

Search this article

Description

In order to obtain basic data for preparing of noble metal-coated electrodes, the decomposition processes of iridium chlorides such as H2IrCl6⋅6H2O, IrCl3 and IrCl4⋅H2O and ruthenium trichloride, RuCl3⋅nH2O, and also the alcoholic solutions of these chlorides were studies by means of TG, DTA. and X-ray diffraction. Although H2IrCl6 decomposed stepwisely according to the order of H2IrCl6⋅6H2O→IrCl4→IrCl3→Ir→IrO2, IrCl4 separately prepared decomposed in a different way from IrCl4 detected under the heating process of H2IrCl6. A small difference in the crystalline structure would cause a difference in the process of decomposition. Addition of an alcohol like-l-butanol (n-BuOH) to the chlorides remarkably decreased the decomposition temperature and the matallic Jr was taken out below 450°C and IrO2 was obtained above 450°C.<BR>From RuCl3, under air, matallic Ru was obtained neither in the presence nor in the absence of n-BuOH, but Ru02 was taken out directly above 500°C. Under the atmosphere of Ar, Ru was easily taken out by heating RuCla dissolved in n-BuOH.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1988 (12), 1938-1943, 1988-12-10

    The Chemical Society of Japan

Keywords

Details 詳細情報について

Report a problem

Back to top