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Manganese composite valence crosslinking substance adsorption catalytic material as well as preparation method and application thereof

A technology for adsorption, catalysis and cross-linking, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. through etc. questions

Active Publication Date: 2022-04-12
瑞燃(上海)环境工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, traditional porous physical adsorption materials (such as activated carbon, molecular sieve, etc.) have many disadvantages: (1) The adsorption capacity is low; (2) After the adsorption is saturated, it is easy to be released again due to the influence of temperature; (3) The gas in the low concentration range is easy to permeate No adsorption occurs, especially when the pollutants or impurity components in the exhaust gas are less than a dozen ppm, they are more likely to escape, and the adsorption efficiency is difficult to meet the treatment requirements
However, there are still disadvantages of low adsorption capacity and re-release after saturation.
[0005] Invention patent CN110292927A uses mesoporous carbon to support ferrocene and other substances to catalyze the degradation of benzene and formaldehyde, but the preparation process is complicated, the loading is uneven, and the catalytic efficiency is limited
These materials are often only suitable for the adsorption and treatment of TVOC in the home environment, and are not suitable for the adsorption and degradation of organic pollutants in complex industrial environments with large fluxes.

Method used

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  • Manganese composite valence crosslinking substance adsorption catalytic material as well as preparation method and application thereof
  • Manganese composite valence crosslinking substance adsorption catalytic material as well as preparation method and application thereof
  • Manganese composite valence crosslinking substance adsorption catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of manganese (IV) doped carbon dots:

[0025] In a 100mL hydrothermal kettle, dissolve 18.8g gallic acid (0.1mol) in 50mL hot water, add 0.86g (0.01mol) of MnO 2 , Seal the reaction kettle, heat it to 400°C in a muffle furnace, cool it after 4 hours, take it out, and centrifuge to retain the precipitate, which is Mn(IV) doped carbon dots.

[0026] (2) Preparation of manganese (III) cross-linked montmorillonite powder:

[0027] In a mortar, add 50g of montmorillonite powder, slowly add 10g of Mn(III) acetylacetonate complex (i.e. manganese(III) acetylacetonate) while stirring, finish adding, grind for 5 minutes, and pass solid phase reaction at normal temperature, Prepare Mn(III) cross-linked montmorillonite powder.

[0028] (3) The preparation method of the adsorption catalytic material of the manganese composite valence state (III / IV) cross-linked product:

[0029] 5 grams of Mn (IV) doped carbon dots and 25 grams of Mn (III) cross-linked montmorillo...

Embodiment 2

[0033] (1) Preparation of manganese (IV) doped carbon dots:

[0034] In a 100mL hydrothermal kettle, dissolve 28.2g gallic acid (0.15mol) in 70mL hot water, add 0.86g (0.01mol) of MnO 2 , Seal the reaction kettle, heat it to 400°C in a muffle furnace, cool it after 4 hours, take it out, and centrifuge to retain the precipitate, which is Mn(IV) doped carbon dots.

[0035] (2) Preparation of manganese (III) cross-linked montmorillonite powder:

[0036] In a mortar, add 50g of montmorillonite powder, slowly add 10g of Mn(III) acetylacetonate complex while stirring, after adding, grind for 10 minutes, and make Mn(III) cross-linked montmorillonite through normal temperature solid phase reaction. De-stone powder.

[0037] (3) The preparation method of the adsorption catalytic material of the manganese composite valence state (III / IV) cross-linked product:

[0038] 5 grams of Mn (IV) doped carbon dots and 20 grams of Mn (III) cross-linked montmorillonite powder prepared by the abo...

Embodiment 3

[0040] (1) Preparation of manganese (IV) doped carbon dots:

[0041] In a 100mL hydrothermal kettle, dissolve 18.8g gallic acid (0.1mol) in 50mL hot water, add 0.86g (0.01mol) of MnO 2 , Seal the reaction kettle, heat it to 700°C in a muffle furnace, cool it after 2 hours, take it out, and centrifuge to retain the precipitate, which is Mn(IV) doped carbon dots.

[0042] (2) Preparation of manganese (III) cross-linked montmorillonite powder:

[0043]In a mortar, add 50g of montmorillonite powder, slowly add 15g of Mn(III) acetylacetonate complex while stirring, after adding, grind for 8 minutes, and make Mn(III) cross-linked montmorillonite through normal temperature solid phase reaction. De-stone powder.

[0044] (3) The preparation method of the adsorption catalytic material of the manganese composite valence state (III / IV) cross-linked product:

[0045] 5 grams of Mn (IV) doped carbon dots and 25 grams of Mn (III) cross-linked montmorillonite powder prepared by the above ...

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Abstract

The invention provides a manganese composite valence cross-linked substance adsorption catalytic material. The material is prepared from the following raw materials in parts by mass: 1-5 parts of manganese-doped carbon dots; 20 to 40 parts of activated carbon; 10 to 20 parts of aluminum oxide; 15 to 25 parts of manganese cross-linked montmorillonite powder; and 5-10 parts of sodium carbonate. According to the invention, a novel adsorption catalytic material is prepared from a manganese (III / IV) compound in a composite valence state and is used for treating industrial polluted waste gas. The preparation method comprises the following steps: firstly, forming a Mn (IV)-doped carbon dot nano material from gallic acid and manganese dioxide under a hydrothermal condition, then crosslinking montmorillonite with manganese (III) acetylacetonate to obtain an active manganese compound in a middle valence state, and finally, adding activated carbon, sodium carbonate and the like, and granulating and forming to prepare the adsorption catalytic material of a manganese composite valence state (III / IV) crosslinking substance. The raw materials are easy to obtain, the method is simple, operation is convenient, practicability is high, and the prepared adsorption catalytic materials in different shapes have wide application prospects.

Description

technical field [0001] The invention relates to the technical field of air pollutant adsorption materials, in particular to a manganese composite valence state cross-linked material adsorption catalyst material, a preparation method thereof, and an application thereof in air pollution control. Background technique [0002] Solid-gas adsorption materials have been widely studied and applied in the field of waste gas treatment or the removal of specific components in gases. Porous physical adsorption materials, such as zeolite molecular sieves, silica gel, activated alumina and activated carbon, are the most widely studied traditional filter materials. [0003] However, traditional porous physical adsorption materials (such as activated carbon, molecular sieve, etc.) have many disadvantages: (1) The adsorption capacity is low; (2) After the adsorption is saturated, it is easy to be released again due to the influence of temperature; (3) The gas in the low concentration range i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J20/20B01D53/86B01D53/44B01D53/02
CPCY02A50/20
Inventor 程秀梅陆雪芹王成林
Owner 瑞燃(上海)环境工程技术有限公司
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