Mutual separation of platinum group metaltrifluoroacetylacetone complexes by gas chromatography

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  • SUGIURA Kenji
    Department of Chemistry,Faculty of Science, Kyoto University

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Other Title
  • 白金族元素‐トリフルオロアセチルアセトン錯体のガスクロマトグラフィーによる相互分離
  • ハッキンゾク ゲンソ トリフルオロアセチルアセトン サクタイ ノ ガス クロマ
  • 白金族元素-トリフルオロアセチルアセトン錯体のガスクロマトグラフィーによる相互分離

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Description

Mutual separation of platinum group metals by gas chromatography was investigated. Five kinds of platinum group metal-trifluoroacetylacetone (Htfa) chelates, i. e., Ru(tfa)3, Rh(tfa)3, Pd(tfa)2, , Ir(tfa)3, and Pt(tfa)2, were prepared, and the thermogravimetric curves of these chelates in a stream of helium containing Htfa vapor were obtained by utilizing an injection chamber of a gas chromatograph equipped with a ligand vapor generator. It was found that all of the chelates were completely sublimed in the temperature range from 150 °C to 180 °C. Moreover, the elution behaviors and mutual separation of these chelates were investigated using twelve kinds of sta tionary liquids (2 % and 10 % OV-17, PPE-6R, OV-210, OV-225, PEG20M, and OV-275) coated on Chromosorb W AW DMCS {(6080) mesh} packed in Pyrex glass column (1.0 m × 2.5 mmi. d.). The fol lowing results were found under the gas chromatographic conditions of the column temperature 140 °C and the flow rate 30 ml/min. 1) Pt chelate could be isolated from the mixture of five chelates by using the column of 10 % OV-17. 2) The mixture of Ru, Rh, Pd, Ir, Pt chelates could be separated into four groups or elements (Rh + Ir, Ru, Pd, Pt) by using the column of 10 % PPE-6R. 3 Rh and Jr chelates could not be separated completely under various gas chromatographic conditions investigated.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 31 (4), 197-202, 1982

    The Japan Society for Analytical Chemistry

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