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A kind of preparation method of ceria modified montmorillonite supported ruthenium catalyst

A ceria, ruthenium catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of high price and high cost, and achieve production costs. Low cost, low cost and low reaction temperature

Active Publication Date: 2020-09-22
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the technical problems of high price and high cost of precious metal catalysts in the prior art when catalytic combustion of organic waste gases such as toluene, and provide a kind of catalytic combustion of organic waste gases such as toluene, which has high activity, good stability, Preparation method of low-cost ceria-modified montmorillonite-supported ruthenium catalyst

Method used

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  • A kind of preparation method of ceria modified montmorillonite supported ruthenium catalyst
  • A kind of preparation method of ceria modified montmorillonite supported ruthenium catalyst

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Embodiment 1

[0027] Embodiment 1: as figure 1 The preparation method of a kind of ceria modified montmorillonite supported ruthenium catalyst shown, comprises wetting process, acidification process, washing process, roasting process, modification process, dipping reduction process, ruthenium catalyst roasting process; First, take Add 500 grams of 1500-mesh montmorillonite raw material to 5000 grams of deionized water, stir for 30 minutes, and precipitate to remove the upper liquid and impurities; add the wetted montmorillonite to sulfuric acid with a concentration of 0.5 mol / L During heating, the temperature is controlled at 40°C, stirred, and acidified, and the acidification time is set to 3 hours; then the acidified montmorillonite is filtered, and the montmorillonite is washed with deionized water until it is neutral; the washed montmorillonite is The soil was dried at 110°C for 12 hours, and then the dried montmorillonite was pressed into a sheet shape with a diameter of 12 mm and a th...

Embodiment 2

[0035] Embodiment 2: as figure 1A kind of preparation method of shown a kind of ceria modified montmorillonite supported ruthenium catalyst, at first, get 500 grams of montmorillonite raw material of 1500 meshes, join in the deionized water of 5000 grams, stir after 30 minutes, precipitate, remove upper layer liquid and impurities; add the wetted montmorillonite into the hydrochloric acid with a concentration of 1 mol / L, heat, the temperature is controlled at 80°C, stir, and acidify, and the acidification time is set to 4 hours; then the acidified Filter the montmorillonite, wash the montmorillonite with deionized water until neutral; dry the washed montmorillonite at 110°C for 12 hours, then press the dried montmorillonite into a sheet , the lamellar diameter is 10 mm, and the thickness is 2 mm, and then the lamellar montmorillonite is fired at 500 ° C for 3 hours to set the shape.

[0036] Immerse the above-mentioned calcined and shaped sheet-like montmorillonite in an aque...

Embodiment 3

[0037] Embodiment 3: as figure 1 A kind of preparation method of shown a kind of ceria modified montmorillonite supported ruthenium catalyst, at first, get 500 grams of montmorillonite raw material of 1500 meshes, join in the deionized water of 5000 grams, stir after 30 minutes, precipitate, remove upper layer liquid and impurities; the wetted montmorillonite was added to nitric acid with a concentration of 5 mol / L, heated, the temperature was controlled at 70°C, stirred, and acidified, and the acidification time was set to 7 hours; then the acidified Filter the montmorillonite, wash the montmorillonite with deionized water to neutrality; dry the washed montmorillonite at 110°C for 12 hours, and then press the dried montmorillonite filter cake into tablets Layered, the diameter of the sheet is 12 mm, the thickness is 2 mm, and then the layered montmorillonite is fired at 600 ° C for 7 hours to set the shape.

[0038] Immerse the above-mentioned calcined and shaped lamella mon...

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Abstract

The invention discloses a method for preparing a cerium dioxide modified montmorillonoid loaded ruthenium catalyst and belongs to the technical field of catalyst synthesis. The method comprises a moistening process, an acidification process, a washing process, a roasting process, a modification process, a soaking reduction process and a ruthenium catalyst roasting process. The method disclosed bythe invention is simple to operate, a montmorillonoid raw material is convenient to get, low in production cost, green and environment-friendly in production process, low in catalytic oxidation reaction temperature, high in efficiency in removing methylbenzene in the air, relatively good in catalytic complete oxidation activity and relatively high in practical value.

Description

technical field [0001] The invention belongs to the technical field of catalyst synthesis, and in particular relates to a preparation method of a ceria-modified montmorillonite-supported ruthenium catalyst for catalyzing toluene combustion reaction. Background technique [0002] The main gas pollutants discharged during industrial production, such as some volatile organic compounds, are a type of pollutants that seriously affect the environment and human health. Before discharge, they must be treated in a harmless manner. There are chemical methods to deal with volatile organic compounds. The most effective treatment method is to use catalysts to completely burn volatile organic compounds into CO at a lower temperature. 2 and H 2 O. There are many kinds of industrial catalysts, among which noble metal catalysts play an extremely important role in the field of catalysis, such as commonly used palladium and rhodium catalysts, which have been widely used in industrial operati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/63F23G7/07
CPCB01J23/63F23G7/07F23G2209/14
Inventor 葛昌华魏耶芸严雯赵波王勇张鸿瑜葛施施
Owner TAIZHOU UNIV
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