Production of complexing iron catalyzer and application of polyphase photocatalysis hydrogen phosphide

A technology of hydrogen peroxide and catalyst, which is applied in the field of preparation of complex iron catalysts, can solve the problem of low decomposition rate of heterogeneous photocatalytic hydrogen peroxide, achieve good adsorption and oxidation performance, facilitate operation, and improve the effect of decomposition rate

Inactive Publication Date: 2008-02-27
HARBIN INST OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low decomposition rate of heterogeneous photocatalytic hydrogen peroxide in th...

Method used

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specific Embodiment approach 1

[0011] Specific embodiment one: the preparation method of the complexed iron catalyst of the present embodiment is as follows: first ferric ion and complex are complexed by the molar ratio of 1~2:1 to form ferric complex; Ratio of ferric ions added to 7-8g cation exchange resin particles or membranes. Immerse the pretreated cation exchange resin particles or membranes in ferric complexes, vibrate at room temperature for 0.5-24 hours, then filter, and finally The cation exchange resin or membrane after the above treatment is washed repeatedly with clear water until there is no iron elution, and the complex iron catalyst is obtained.

[0012] The particle diameter of the cation exchange resin particles is 0.05-1.2mm.

specific Embodiment approach 2

[0013] Embodiment 2: This embodiment differs from Embodiment 1 in that the molar ratio of the ferric ion to the complex is 1.2-1.8:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Embodiment 3: This embodiment is different from Embodiment 1 in that the molar ratio of the ferric ion to the complex is 1.5:1. Others are the same as in the first embodiment.

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Abstract

The invention discloses a making method of complex ferric catalyst and application of multi-phased optical catalyzed hydrogen peroxide to solve the problem of low-decomposing speed of the multi-phased optical catalyzed hydrogen peroxide in the water, which comprises the following steps: complexing trivalent ferric ion and complex to form trivalent ferric complex; immersing the predisposed cation exchange resin particle or film in the trivalent complex; vibrating under indoor temperature for 0. 5-24h; separating resin from complex solution; using clean water to wash reciprocally until the ferric doesn't be dissolved out; the complex ferric catalyst can be applied for multi-phased optical catalyzed hydrogen peroxide with decomposing rate to 100%. The invention can increase the mineralization rate of organics with mineralization rate over 705, which simplifies the operation obviously.

Description

technical field [0001] The invention relates to the preparation of a catalyst and the application thereof to catalyze hydrogen peroxide; in particular to the preparation of a complex iron catalyst and the application of heterogeneous photocatalytic hydrogen peroxide. Background technique [0002] Hydrogen peroxide is a green oxidant, because the reaction products are oxygen and water, so hydrogen peroxide is widely used in industry. There are two methods for catalyzing hydrogen peroxide, one is base catalysis and the other is transition metal catalysis. The reaction rate of base-catalyzed hydrogen peroxide is slow, and a large amount of base needs to be consumed to adjust the pH value; the reaction rate of transition metal-catalyzed hydrogen peroxide is much larger than that of base-catalyzed reaction. Ferrous ion catalyzed hydrogen peroxide, namely Fenton's reagent, is a model of transition metal catalysis. In 1894, Fenton proposed that under acidic pH=2, ferrous ions cou...

Claims

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Application Information

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IPC IPC(8): B01J31/08B01J31/28C02F1/72
Inventor 马军张瑛洁陈雷张亮姚军
Owner HARBIN INST OF TECH
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