Method for preparing double-component metallic oxide catalytic ozonation catalyst

An ozone catalytic oxidation, two-component technology, applied in the direction of oxidized water/sewage treatment, etc., to achieve the effect of wide range of raw materials, low production cost, good mechanical properties and stability
CN102941084AInactive Publication Date: 2013-02-27DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2013-02-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a double-component metallic oxide catalytic ozonation catalyst. The method is characterized in that, after being activated, gamma-Al2O3 microballoon is soaked in mixed liquor of manganous nitrate and cerous nitrate, and then after drying and roasting, the loading type manganese and cerium double-component composite catalyst is prepared. The catalyst has high catalytic activity, is applied in organic pollutant degradation through catalytic ozonation, remarkably fastened in degradation rate compared with degradation using ozone singly or using unloaded gamma-Al2O3 microballoon, greatly improved compared with loading catalyst using single component of manganese or cerium and capable of reducing input amount of ozone, and according saves operation cost. Simultaneously, the catalyst has the advantages of being simple in preparing method, low in cost, stable in catalytic performance, capable of being repeatedly used and the like and is favorable for popularization and application of the catalytic ozonation technology.
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Description

technical field

[0001] The invention belongs to the technical field of catalyst preparation, in particular to a γ-Al 2 o 3 The invention discloses a preparation method of a supported two-component ozone catalytic oxidation catalyst with microspheres as the carrier and active components of manganese oxide and cerium oxide. Background of the invention

[0002] Ozone has strong oxidizing properties, can oxidize almost all organic pollutants in water, and can decompose itself in water for a short time without causing secondary pollution, but it has high cost, low solubility in water, and incomplete oxidation of organic matter. its application in the field of water treatment.

[0003] Heterogeneous catalytic ozonation is an emerging advanced oxidation technology, which generates more oxidative hydroxyl radicals by catalyzing ozonolysis, which can degrade and completely mineralize organic pollutants in water that are difficult to be oxidized by ozonation alone. The core of this...

Claims

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