Cesium and strontium exchange by the framework potassium titanium silicate K3HTi4O4(SiO4)3•4H2O

被引:22
作者
Puziy, AM [1 ]
机构
[1] Natl Acad Sci, Inst Sorpt & Problems Endoecol, Kiev, Ukraine
关键词
D O I
10.1007/BF02386665
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Potassium titanium silicate with a semicrystalline framework of the formula K3HTi4O3(SiO4)(3). 4H(2)O has been prepared under mild hydrothermal conditions and its protonic form, H4Ti4O4(SiO4)(3). 8H(2)O, was obtained by acid treatment of the potassium compound. A comparative ion exchange testing of the H4Ti4O4(SiO4)(3). 8H(2)O towards alkali and alkaline earth metals in a broad pH and concentration range was carried out. It was found that potassium titanium silicate is a moderately weak cation exchanger, possessing high ion exchange capacity (up to 4-5 meq/g) and showing preference for heavy alkali and alkaline earth metals uptake. The selectivity of K3HTi4O4(SiO4)(3). 4H(2)O towards Cs+ and Sr2+ ions in alkaline and acid media in the presence of competitive inorganic ions and certain organic compounds was also studied. The data obtained suggest that despite the existence of well defined tunnel structure with parameters fitting for cesium ion in the K3HTi4O4(SiO4)(3). 4H(2)O, potassium titanium silicate could remove cesium (and strontium) efficiently only under some specific conditions, namely, at pH close to neutral and in the absence of competitive ions and especially of organic complexing agents.
引用
收藏
页码:73 / 79
页数:7
相关论文
共 16 条
  • [1] Anthony R. G., 1993, Waste Management, V13, P503, DOI 10.1016/0956-053X(93)90080-G
  • [2] Syntheses, crystal structures, and ion-exchange properties of porous titanosilicates, HM(3)Ti(4)O(4)(SiO4)(3)center dot 4H(2)O (M=H+, K+, Cs+), structural analogues of the mineral pharmacosiderite
    Behrens, EA
    Poojary, DM
    Clearfield, A
    [J]. CHEMISTRY OF MATERIALS, 1996, 8 (06) : 1236 - 1244
  • [3] Strontium binding properties of inorganic adsorbents
    Bengtsson, GB
    Bortun, AI
    Strelko, VV
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1996, 204 (01): : 75 - 82
  • [4] Ion exchange properties of a cesium ion selective titanosilicate
    Bortun, AI
    Bortun, LN
    Clearfield, A
    [J]. SOLVENT EXTRACTION AND ION EXCHANGE, 1996, 14 (02) : 341 - 354
  • [5] FRANKEL S, 1963, CLIN LAB METHODS DIA, V1
  • [6] Giordano C., 1980, SORBENTS THEIR CLIN
  • [7] ACTIVITY COEFFICIENTS IN CONCENTRATED SOLUTIONS CONTAINING SEVERAL ELECTROLYTES
    GLUECKAUF, E
    [J]. NATURE, 1949, 163 (4141) : 414 - 415
  • [8] SINGLE-CRYSTAL STRUCTURE OF CS3HTI4O4(SIO4)(3)CENTER-DOT-4H(2)O, A TITANOSILICATE PHARMACOSIDERITE ANALOG
    HARRISON, WTA
    GIER, TE
    STUCKY, GD
    [J]. ZEOLITES, 1995, 15 (05): : 408 - 412
  • [9] Structural studies on the ion-exchanged phases of a porous titanosilicate, Na2Ti2O3SiO4 center dot 2H(2)O
    Poojary, DM
    Bortun, AI
    Bortun, LN
    Clearfield, A
    [J]. INORGANIC CHEMISTRY, 1996, 35 (21) : 6131 - 6139
  • [10] SYNTHESIS, CRYSTAL-STRUCTURES, AND ION-EXCHANGE PROPERTIES OF A NOVEL POROUS TITANOSILICATE
    POOJARY, DM
    CAHILL, RA
    CLEARFIELD, A
    [J]. CHEMISTRY OF MATERIALS, 1994, 6 (12) : 2364 - 2368