Ion exchange properties of hydrous oxides

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The large class of amorphous insoluble hydrous oxides has interesting ion exchange properties. These materials have high capacities and suitable exchange rates and may therefore be used in packed columns in typical chromatographic (ion exchange) manner. Hydrous oxides may exhibit either cation exchange or anion exchange properties, or both. The type of adsorption depends on the element on which the oxide is based, on the acidity of the medium and, to some extent, on the ion adsorbed. Though some of the most acidic oxides are soluble (e.g., P/sub 2/O/sub 5/) or easily dispersible (e.g., MoO/sub 3/ WO/sub 3/) their intrinsic ... continued below

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Pages: 29

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Kraus, K. A.; Phillips, H. O.; Carlson, T. A. & Johnson, J. S. June 1, 1958.

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The large class of amorphous insoluble hydrous oxides has interesting ion exchange properties. These materials have high capacities and suitable exchange rates and may therefore be used in packed columns in typical chromatographic (ion exchange) manner. Hydrous oxides may exhibit either cation exchange or anion exchange properties, or both. The type of adsorption depends on the element on which the oxide is based, on the acidity of the medium and, to some extent, on the ion adsorbed. Though some of the most acidic oxides are soluble (e.g., P/sub 2/O/sub 5/) or easily dispersible (e.g., MoO/sub 3/ WO/sub 3/) their intrinsic cation exchange properties may be utilized by incorporating them in excess into an insoluble matrix, i.e., by preparing certain insoluble acidic salts. Some of the materials with cation exchange properties may be used even with extremely small columns - for the separation of the alkali metals from each other - or of the alkaline earths. The specificity of these compounds for cesium in acidic solutions permits the almost unique isolation of this element from properties all others. Those oxides with anion exchange properties also have unusual selectivities compared with the organic ion exchangers. Oxides based on Bi(III) have high selectivities for the heavier halides and others, such as the oxides of Zr(IV), Nb(V), and Ta(V) for remarkable selectivities for fluorides. (auth)

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Pages: 29

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  • 2. United Nations International Conference on the Peaceful Uses of Atomic Energy, Geneva (Switzerland), Jun 1958

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  • Report No.: A/CONF.15/P/1832
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4328233
  • Archival Resource Key: ark:/67531/metadc1018852

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  • June 1, 1958

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

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  • Feb. 1, 2018, 6:18 p.m.

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Kraus, K. A.; Phillips, H. O.; Carlson, T. A. & Johnson, J. S. Ion exchange properties of hydrous oxides, article, June 1, 1958; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1018852/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.