Preparation method of two-dimensional flaky porous composite oxide and application of two-dimensional flaky porous composite oxide in control of chlorine-containing volatile organic pollutants

A composite oxide and sheet-like technology, applied in the field of air pollution control, can solve the problems of large energy consumption, achieve high stability and chlorine resistance, excellent oxidation ability of chlorine-containing volatile organic compounds and dechlorination ability

Active Publication Date: 2021-04-13
XI AN JIAOTONG UNIV +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used catalytic treatment technology is regenerative thermal incinerator (RTO) technology. Although this technology has a good adsorption and purification effect and a cool treatment effect, its operating temperature is generally above 800°C and has a large energy consumption.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of two-dimensional flaky porous composite oxide and application of two-dimensional flaky porous composite oxide in control of chlorine-containing volatile organic pollutants
  • Preparation method of two-dimensional flaky porous composite oxide and application of two-dimensional flaky porous composite oxide in control of chlorine-containing volatile organic pollutants
  • Preparation method of two-dimensional flaky porous composite oxide and application of two-dimensional flaky porous composite oxide in control of chlorine-containing volatile organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Example 1 A bifunctional multi-effect cobalt zinc oxide was prepared by the in situ crystallization method.

[0038]0.045 mol of dimethylimidazole was completely dissolved in 100 mL of anhydrous methanol, and stirred at 500 rpm to stir for 10 min, forming a colorless clear and transparent solution A; 0.045 mol of hexahydrate is completely dissolved in 100 mL of anhydrous methanol The mixture was stirred at 500 rpm for 20 min, and a colorless clear and clear solution B was formed. The B solution was gradually added to A. The mixture was mixed and stirred at 600 rpm to stir up to 200RMP stir until the solution exhibits white. The white solution was then allowed to stand 48 h, and the mixture was filtered, washed three times with anhydrous ethanol and deionized water, and dried under 60 ° C; 0.2 g of the prepared white powder was ground into thin powder, and 30 ml of deion In the water, the solution was ultrasound using an ultrasonic instrument until the white powder is completely u...

Embodiment 2

[0039]Example 2 Catalytic Test and Evaluation of Catalyzed 1,2-Dichloroethane by Cobalt Zinc Composite Metal Catalytic Material

[0040]Take the solid powder tables obtained in Example 1, a sieve (40-60 mesh), and accurately weigh 0.5 g of sieved catalytic material at 1,2-dichloroethane as a probe gas, reactant The concentration was controlled at 1000 ppm, the reaction vacancy was 36000 ml / g · h, and the oxygen concentration was 21%, and the catalyst was tested at different temperatures (100 ° C, 150 ° C, 200 ° C, 250 ° C, 300 ° C, 350 ° C, 380 ° C and The catalytic reaction activity of 400 ° C was 400 ° C, and the reaction product was monitored by gas chromatography.

Embodiment 3

[0041]Example 3 Catalytic Test of Catalytic Degradation of 1,2-Dichloroethane Catalyzed

[0042]Take the solid powder table obtained in Example 1, exemplify the sieve (40-60 mesh), accurately weigh 0.5 g of sieved catalytic material and placed in a fixed bed of the evaluation device, with 1,2-dichloroethism The alkane is a probe gas, the concentration of the reactants is controlled at 1000 ppm, and the reaction is air speed is 36000 h.-1The oxygen concentration is 21%, the catalytic reaction activity of the continuous test catalyst at 370 ° C, and the reaction product is analyzed by gas chromatography.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a two-dimensional flaky porous composite oxide and application of the two-dimensional flaky porous composite oxide in control of chlorine-containing volatile organic pollutants. The method comprises the following steps: adding a zinc nitrate hexahydrate water solution into a methanol solution of dimethylimidazole, stirring until the solution is white, and performing filtering, and drying to obtain white powder; adding a cobalt nitrate hexahydrate aqueous solution into a white powder aqueous solution, adding ammonia water, stirring, carrying out hydrothermal crystallization at 120-160 DEG C for 8-12 hours, then, performing drying and roasting to obtain the two-dimensional flaky porous composite oxide. The two-dimensional flaky catalytic material prepared by the invention has a very rich pore structure and high-dispersion active sites, and can effectively improve the mass transfer and transmission capacity of target pollutants, thereby showing excellent chlorine-containing volatile hydrocarbon oxidation performance. The preparation method is low in raw material price, simple in synthesis method, simple in synthesis condition and low in equipment requirement, and has a good industrial application prospect.

Description

Technical field[0001]The present invention belongs to the technical field of atmospheric pollution, and is particularly related to the preparation method of two-dimensional sheet-shaped porous composite oxide and its application in control of chlorine-containing volatile organic pollutants.Background technique[0002]With the development of my country's economy and industry, the emissions of volatile organic pollutants (VOCs) in my country are currently 31 million tons / year, which has jumped to the world and increased year by year. VOCS refers to a variety of high vapor pressure (>>>>>>>>>133.32Pa) and an organic compound composed of a low boiling point (50 ~ 260 ° C) organic matter. Its species mainly includes: hydrocarbons, aldehydes, alcohols, ketones, aromatic hydrocarbons, esters and ethers, etc., main source is organic chemical, pharmaceutical, surface spray, printing, dry cleaning, cereal storage and motor vehicle exhaust In terms of emissions, it i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J35/10B01J37/10B01J37/03B01J37/08B01D53/86B01D53/70
CPCB01D53/8668B01D2257/2064B01D2257/708B01J23/002B01J23/80B01J35/10B01J37/031B01J37/086B01J37/10
Inventor 何炽田明姣姜泽宇李璐马牧笛
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap