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  • 1 Niigata University Department of Chemistry, Faculty of Science Niigata 950-2181 Japan
  • | 2 Japan Atomic Energy Research Institute Advanced Science Research Center Tokai-mura, Ibaraki 319-1195 Japan
  • | 3 Niigata University Department of Chemistry Niigata 950-2181 Japan
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An isothermal chromatographic apparatus was developed for the on-line experiments of super heavy elements in gas phase. As a model of Rf, we investigated the gas phase chemistry of Zr and Hf chlorides. The dependence of the reaction efficiency on temperature was examined. It was found that about 80% of Zr and Hf reacted with chlorinating gas at 900 °C. Adsorption enthalpies of Zr and Hf chlorides were deduced from the isothermal chromatograph by the Monte Carlo simulation based on the microscopic model proposed by Zvára.