Preparation method of multi-element polyhydroxy pumice ozone catalyst

A technology of polyhydroxyl pumice and catalyst, which is applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve the problems of secondary pollution, difficult recovery of catalysts, etc. The effect of separation and combination

Inactive Publication Date: 2014-09-24
HEILONGJIANG ACAD OF SCI INST OF NATURAL RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that existing nano-transition metal hydroxide catalysts are difficult to recycle and easily cause secondary pollution in the process of catalyzing organic matter in ozonated water, and provides a preparation method of multi-component polyhydroxy pumice ozone catalyst

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  • Preparation method of multi-element polyhydroxy pumice ozone catalyst
  • Preparation method of multi-element polyhydroxy pumice ozone catalyst

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specific Embodiment approach 1

[0011] Specific embodiment one: the preparation method of a kind of multi-component polyhydroxy pumice ozone catalyst of present embodiment, carry out according to the following steps:

[0012] 1. Ultrasonic cleaning: Use distilled water to ultrasonically clean the pumice 2 to 4 times at a frequency of 40KHz, and the single cleaning time is 5min to 10min; 2. Soak in acid solution: put the pumice after ultrasonic cleaning in step 1 into the Soak in an acid solution of 0.5mol / L to 1.0mol / L for 3h to 6h to obtain a mixed solution A; 3. Filtration, washing and drying: filter the mixed solution A obtained in step 2, and filter the solid Rinse with distilled water for 5 to 7 times, and then dry at a temperature of 60°C to 120°C for 12h to 24h to obtain solid B; 4. Aluminum salt solution immersion: immerse the solid B obtained in step 3 at a concentration of 0.5mol / In the aluminum salt solution of L~5.0mol / L, the immersion time is 24h~48h to obtain suspension C; 5. Filtration, washi...

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment is different from Embodiment 1 in that: the particle size of the pumice in step 1 is 0.1 mm to 10 cm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the acid solution in step 2 is nitric acid solution, hydrochloric acid solution or sulfuric acid solution. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a multi-element polyhydroxy pumice ozone catalyst and relates to a preparation method of a heterogeneous catalyst for water treatment. The preparation method disclosed by the invention aims to solve the problems that conventional nanometer transition metal hydroxylate catalysts are difficult to recover and the secondary pollution is easy to generate in the process of catalyzing organic matters in ozonized water. The preparation method comprises the steps of: 1, ultrasonically cleaning; 2, acid solution soaking; 3, filtering, washing and drying; 4, aluminium salt solution dipping; 5, filtering, washing and roasting; 6, metal salt solution dipping; 7, activating treatment; and 8, filtering, washing and drying to obtain the multi-element polyhydroxy pumice ozone catalyst. The preparation method disclosed by the invention can be used for preparing the multi-element polyhydroxy pumice ozone catalyst.

Description

technical field [0001] The invention relates to a preparation method of a heterogeneous catalyst for water treatment. Background technique [0002] With the rapid development of industry and the improvement of human material living standards, water pollution has become a common problem. Some refractory toxic and harmful pollutants in water, although the concentration is low, are harmful and difficult to remove. Traditional treatment processes cannot effectively remove these toxic and harmful micro-pollutants, which directly threaten the safety of urban water supply. In the field of water treatment, metal-catalyzed ozonation technology has become a current research hotspot because of its high-efficiency oxidation performance and easy separation of catalysts. In recent years, with the development of nanotechnology, researchers have used nanometer metal oxides as catalysts in ozone catalytic systems to remove organic pollutants in water, and achieved good catalytic effects. R...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B01J23/75C02F1/78C02F101/38C02F101/36
Inventor袁磊倪红伟张继舟扬帆王立民吕品
OwnerHEILONGJIANG ACAD OF SCI INST OF NATURAL RESOURCES