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Nanometer cobalt ion-doped titanic anhydride catalyst and preparation method thereof

A titanium dioxide, nano-scale technology, applied in the field of titanium dioxide catalyst and its preparation, can solve the problem that the removal rate of TOC in the effluent is difficult to increase, and achieve the effect of improving the degradation rate of stable pollutants, simple and easy preparation method, and high stability

Inactive Publication Date: 2009-11-11
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the removal rate of effluent TOC is difficult to increase in the existing advanced oxidation technology water treatment process, and to provide a nano-scale cobalt ion-doped titanium dioxide catalyst and its preparation method

Method used

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  • Nanometer cobalt ion-doped titanic anhydride catalyst and preparation method thereof
  • Nanometer cobalt ion-doped titanic anhydride catalyst and preparation method thereof

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specific Embodiment approach 1

[0016] Specific embodiment one: the nano-scale cobalt ion-doped titanium dioxide catalyst of this embodiment is made of butyl titanate, absolute ethanol, cobalt chloride, concentrated hydrochloric acid and distilled water, wherein the volume ratio of butyl titanate and absolute ethanol is 1:4, the volume ratio of butyl phthalate to concentrated hydrochloric acid is 12:1, the molar ratio of Ti element in butyl titanate to Co element in cobalt chloride is 10-40:1, distilled water and butyl phthalate The volume ratio is 5:6.

[0017] The particle size of the catalyst in this embodiment is nanoscale. The nano-scale cobalt ion-doped titanium dioxide catalyst described in this embodiment is mainly used for catalytic ozonation treatment of drinking water, which can be processed by the existing catalytic ozonation method. In the aforementioned catalytic ozonation method, the catalyst adopts a one-time dosing method. Ozone is continuously added, and its process conditions are: the ozo...

specific Embodiment approach 2

[0018] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mass fraction of the concentrated hydrochloric acid is 36.5%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the molar ratio of Ti element in butyl titanate to Co element in cobalt chloride is 15-35:1. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a nanometer cobalt ion-doped titanic anhydride catalyst and a preparation method thereof, which relates to a titanic anhydride catalyst and a preparation method thereof. The invention solves the problem of difficult improvement of TOC removal rate of the yielding water during the water treatment process by the existing advanced oxidation technique. The catalyst of the invention is prepared by butyl titanate, absolute ethyl alcohol, cobalt chloride, concentrated chlorhydric acid and distilled water. The preparation method comprises the following steps of: 1. dripping the butyl titanate into the absolute ethyl alcohol under magnetic stirring; 2. continuously stirring the solution for 1h, then dripping the concentrated chlorhydric acid and adding the cobalt chloride successively and continuously stirring the solution until the solution is clear; 3. continuously stirring the solution for 90 min, dripping the distilled water and conducting static ageing; 4. drying and grinding; and 5. sintering to obtain the catalyst. The catalyst of the invention has the advantages of good activity and high stability and can effectively reduce the TOC of yielding water. The preparation method of the invention has simple technique and convenient operation.

Description

technical field [0001] The invention relates to a titanium dioxide catalyst and a preparation method thereof. The catalyst is mainly used for catalyzing ozone oxidation to degrade organic pollutants in drinking water. Background technique [0002] In recent years, with the rapid development of industry and agriculture and the continuous improvement of people's living standards, serious pollution of drinking water sources in my country has become a common problem. A large number of toxic and harmful organic pollutants such as pesticides, chemical products and other types of man-made chemicals are discharged into natural water bodies, including "persistent organic pollutants (POPs)" and "endocrine disruptors (ECDs)". The above-mentioned organic substances pose a huge threat to the living environment of aquatic organisms in natural water bodies. At the same time, for human beings, various organic substances cannot be effectively removed by traditional conventional processes due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J21/06B01J37/08C02F1/78C02F101/38
Inventor 马军汤黎张静杨忆新刘百仓
Owner HARBIN INST OF TECH
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