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Organic mixed waste gas rare earth-based catalytic combustion catalyst and preparation method and application thereof

A catalytic combustion and catalyst technology, applied in the direction of combustion methods, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effects of reducing carbon deposition, improving processing capacity, and improving catalytic activity

Pending Publication Date: 2021-01-05
NANJING UNIV OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Can effectively solve the problem of mixed exhaust gas treatment

Method used

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  • Organic mixed waste gas rare earth-based catalytic combustion catalyst and preparation method and application thereof
  • Organic mixed waste gas rare earth-based catalytic combustion catalyst and preparation method and application thereof
  • Organic mixed waste gas rare earth-based catalytic combustion catalyst and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031]A rare earth-based catalytic combustion catalyst for organic mixed waste gas, composed of the following raw materials: tetrahydrate and manganese chloride, cobalt nitrate hexahydrate, cerium nitrate hexahydrate, 2,5-dihydroxyterephthalic acid, N,N-dimethyl Methyl formamide, anhydrous ethanol and anhydrous methanol, (1) 0.16g of manganese chloride tetrahydrate and 0.43g of cerium nitrate hexahydrate are dissolved in 0.13g of 2,5-dihydroxyterephthalic acid (DHTP) and 53mL of N,N-dimethylformamide (DMF) in 10mL of anhydrous ethanol aqueous solution (alcohol: water = 1:1); (2) Put the mixed solution obtained in the previous step into a polytetrafluoroethylene lined React in a stainless steel autoclave at 135°C for 24 hours, cool to room temperature after the reaction, filter, wash and soak the reactants in methanol; (3) Use 99.7% methanol solvent to replace once every 12 hours for the next 96 hours, and then replace the above The prepared CeMn-MOFs product was placed in a vacuum o...

Embodiment 2

[0034]A rare earth-based catalytic combustion catalyst for organic mixed waste gas, composed of the following raw materials: tetrahydrate and manganese chloride, cobalt nitrate hexahydrate, cerium nitrate hexahydrate, 2,5-dihydroxyterephthalic acid, N,N-dimethyl Methyl formamide, anhydrous ethanol and anhydrous methanol, (1) 0.8g of manganese chloride tetrahydrate and 4.3g of cerium nitrate hexahydrate were dissolved in 0.13g of 2,5-dihydroxyterephthalic acid (DHTP) and 53mL of N,N-dimethylformamide (DMF) in 10mL of anhydrous ethanol aqueous solution (alcohol: water = 1:1); (2) Put the mixed solution obtained in the previous step into a polytetrafluoroethylene lined React in a stainless steel autoclave at 135°C for 24 hours, cool to room temperature after the reaction, filter, wash and soak the reactants in methanol; (3) Use 99.7% methanol solvent to replace once every 12 hours for the next 84 hours, and then replace the above The prepared CeMn-MOFs product was placed in a vacuum ov...

Embodiment 3

[0037]A rare earth-based catalytic combustion catalyst for organic mixed waste gas, composed of the following raw materials: tetrahydrate and manganese chloride, cobalt nitrate hexahydrate, cerium nitrate hexahydrate, 2,5-dihydroxyterephthalic acid, N,N-dimethyl (1) 1.6g of manganese chloride tetrahydrate and 4.3g of cerium nitrate hexahydrate are dissolved in 0.13g of 2,5-dihydroxyterephthalic acid (DHTP) and 53mL of N,N-dimethylformamide (DMF) in 10mL of anhydrous ethanol aqueous solution (alcohol: water = 1:1); (2) Put the mixed solution obtained in the previous step into a polytetrafluoroethylene lined React in a stainless steel autoclave at 150°C for 24 hours. After the reaction, cool to room temperature, filter, wash and soak the reactants in methanol; (3) Use 99.7% methanol solvent to replace once every 12 hours for the next 84 hours, and then replace the above The prepared CeMn-MOFs product was placed in a vacuum oven at 60°C for drying overnight, and finally stored in a des...

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Abstract

The invention discloses an organic mixed waste gas rare earth-based catalytic combustion catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dissolving manganese chloride tetrahydrate and cerous nitrate hexahydrate in an absolute ethyl alcohol aqueous solution of DHTP and DMF, putting the mixed solution into a high-pressure kettle for reaction, filtering, cleaning and soaking reactants into methanol, then putting the CeMn-MOFs product into a vacuum oven for drying, finally storing the CeMn-MOFs product in a dryer, taking a CeMn-MOFsproduct, adding the CeMn-MOFs product into absolute ethyl alcohol, dropwise adding a tetrabutyl titanate ethanol solution into the CeMn-MOFs solution, dropwise adding water into the mixed solution until gel is formed, standing the gel at room temperature, ageing, drying to obtain a CeMn-MOFs@TiO2 structural material, preparing an aqueous solution of cerium nitrate hexahydrate, adding the CeMn-MOFs@TiO2 structural material, stirring at room temperature, drying, and roasting to obtain the CeMn-MOFs@CeO2 / TiO2 catalyst.

Description

Technical field[0001]The invention belongs to the treatment field of chlorine-containing volatile organic waste gas, and specifically relates to a rare earth-based catalytic combustion catalyst for organic mixed waste gas of a mixed system of chlorine-containing volatile organic waste gas (dichloromethane) and general organic waste gas (toluene) and a preparation method thereof and application.Background technique[0002]The production process of organic waste gas generally involves the production of a variety of mixed waste gas. In the treatment technology of mixed waste gas, the difference in the nature of the substance has a greater impact on the catalyst, especially the chlorine-containing volatile organic waste gas has a certain toxic effect on the catalyst. , Easy to cause deactivation of the catalyst.[0003]The chlorine-containing volatile organic waste gas has a significant poisoning effect on the catalyst, and the Cl ions generated during the catalytic combustion process can e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34F23G7/07
CPCB01J23/002B01J23/34F23G7/07B01J2523/00F23G2209/14B01J2523/3712B01J2523/47B01J2523/72
Inventor 陈英文邹庆平刘济宁范梦婕沈树宝
Owner NANJING UNIV OF TECH
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