Metasilicate hole material assembled nano titanium oxide composite material and preparation method thereof

Metasilicate hole material assembled nano titanium oxide composite material and preparation method thereof

  • CN 101,062,475 B
  • Filed: 04/29/2006
  • Issued: 04/30/2014
  • Est. Priority Date: 04/29/2006
  • Status: Active Grant
First Claim
Patent Images

1. metasilicate hole material assembled nano titanium oxide composite material, its composition quality percentage is:

  • Layered phyllosilicate porous material 92.2~

    95.9Detitanium-ore-type TiO 27.8~

    4.1;

    The pore volume of described composite is 0.22~

    0.40ml/g, and pore size distribution range is 1.2~

    5.5nm, and specific area is 133~

    189m 2/ g;

    Described composite is that the method by comprising following steps is manufactured;

    1) preparation of layered phyllosilicate porous material;

    take granularity according to Si/Ti mol ratio in product small in the phyllosilicate of 3mm, Si/Ti mol ratio is got any one value from 10;

    1~

    20;

    1, pulverize, then with acid solution, under stirring condition, leach, by cooling leachate, filtration, washing, dry, obtain the micro/meso porous material of layered phyllosilicate;

    2) preparation of metatitanic acid solution;

    be to measure respectively titanium salt and solvent for 1;

    3~

    1;

    8 according to volume ratio, the two is mixed, be fully uniformly dispersed by ultrasonic wave or magnetic agitation, obtain titanium salt solution;

    3) colloidal sol is produced in titanium salt solution and layered phyllosilicate porous material mixing;

    the beaker that titanium salt solution is housed is placed in to stir on instrument and stirs, by Si/Ti mol ratio, be within 10;

    1~

    20;

    1, to take above-mentioned steps

         1) layered phyllosilicate porous material that makes, and this hole material is added in titanium salt solution;

    After stirring, in molar ratio;

    water/titanium salt >

    1 dropwise adds deionized water, described titanium salt being decomposed, is acidity by the pH value that acid solution is controlled reaction system in hydrolytic process;

    Fully, after reaction, stop stirring, obtain colloidal sol;

    4) further produce layered phyllosilicate porous material assembled nano titanium oxide composite;

    utilize above-mentioned steps

         3) colloidal sol that obtains, at room temperature ageing, becomes gel;

    With distilled water washing, filter at least twice, then with absolute ethanol washing, filter at least one times, remove remaining organic matter and other impurity;

    After being dried, powder after washing can make the precursor of phyllosilicate ester hole material assembled nano titanium oxide composite material;

    Precursor after grinding again at 350-500 ℃

    roasting 4-8h obtain layered phyllosilicate porous material assembled nano titanium oxide composite.

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