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Kieselguhr loading solid superacid type Fenton catalyst preparation method

A technology of diatomite and catalyst, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low catalytic efficiency of catalysts, achieve improved catalytic efficiency, increase catalytic efficiency, and have abundant reserves Effect

Inactive Publication Date: 2013-09-11
JILIN YINDA WATER AFFAIR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of low catalytic efficiency of catalysts prepared with diatomite as a carrier, and provide a method for preparing diatomite-loaded solid superacid Fenton catalysts

Method used

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  • Kieselguhr loading solid superacid type Fenton catalyst preparation method
  • Kieselguhr loading solid superacid type Fenton catalyst preparation method
  • Kieselguhr loading solid superacid type Fenton catalyst preparation method

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specific Embodiment approach 1

[0024] Specific embodiment one: the preparation method of diatomite-loaded solid superacid Fenton catalyst of the present embodiment is realized according to the following steps:

[0025] 1. Diatomaceous earth pretreatment: immerse the diatomite raw soil in the inorganic acid solution for 10-14 hours, dry it after filtering, sieve after drying, and then put it into a muffle furnace, at a temperature of 200-400 ° C Activation at high temperature for 1 to 4 hours to obtain activated diatomaceous earth;

[0026] 2. Preparation of precursor: Dissolve iron salt in deionized water, then add the activated diatomite obtained in step 1, add lye dropwise to adjust the pH to 7-9, age at room temperature for 6-24 hours and then filter Collect the solid precipitate, wash the solid precipitate with deionized water, dry it, add it to the impregnation solution, soak it for 12-24 hours, filter and dry it to obtain the precursor;

[0027] 3. High-temperature calcination of the precursor: put t...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of the inorganic acid solution is 0.1-1 mol / L. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0032] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that step 1 is dried and then sieved, wherein the mesh number of the sieve is 100-800 mesh. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a kieselguhr loading solid superacid type Fenton catalyst preparation method, belongs to water treatment, and in particular relates to the kieselguhr loading solid superacid type Fenton catalyst preparation method which is mainly used for solving a problem of poor catalytic efficiency of a catalyst prepared by utilizing conventional kieselguhr as a carrier. The preparation method comprises steps of: 1, soaking original kieselguhr into an inorganic acid solution, and drying, screening and putting the soaked original kieselguhr in a muffle furnace to activate; 2, dissolving iron salt into deionized water, then adding the activated kieselguhr, dropwise adding alkali liquor to regulate the pH, ageing, drying and then adding the kieselguhr into steeping liquor, filtering and drying so as to obtain a precursor; and 3, putting the precursor into the muffle furnace to calcinate at a high temperature so as to obtain a kieselguhr loading solid superacid type Fenton catalyst. The prepared loading catalyst has high catalytic efficiency and low pH requirements and can be widely applied to organic wastewater treatment.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a preparation method of diatomite-loaded solid superacid Fenton catalyst. Background technique [0002] Diatomaceous earth is a non-metallic mineral that is gradually formed by the natural environment from the remains of diatoms that grow in oceans or lakes and is deposited on the bottom of the water. The main chemical composition is amorphous SiO 2 , which also contains a small amount of A1 2 o 3 , CaO, MgO, K 2 O et al. The color of diatomite is divided into white, off-white, gray and light taupe. The microscopic structure of diatomaceous earth is closely related to diatoms. Diatoms are mainly divided into circular diatoms, whose representative genera are circular sieve algae and linear algae, etc.; Algae and mast algae etc. Therefore, the microstructure of diatomite contains microporous layered structures in the shape of discs, sieve tubes and sieve plates. Th...

Claims

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Application Information

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IPC IPC(8): B01J27/053B01J27/02C02F1/72
Inventor 张瑛洁马军李全冬吴从义
Owner JILIN YINDA WATER AFFAIR TECH
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