Cerium-based composite oxide VOCs (volatile organic compounds) combustion catalyst using metal organic framework as template and preparation method thereof

A metal-organic framework, composite oxide technology, applied in catalyst activation/preparation, combustion method, physical/chemical process catalyst, etc., can solve the problems of long reaction time, large energy consumption, complex process, etc., and achieve good catalytic performance, The effect of improved catalytic ability and broad application prospects

Inactive Publication Date: 2018-05-04
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its widely used preparation methods such as hydrothermal method, citric acid complex combustion method and sol-gel method have disadvantages such as une

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
  • Cerium-based composite oxide VOCs (volatile organic compounds) combustion catalyst using metal organic framework as template and preparation method thereof
  • Cerium-based composite oxide VOCs (volatile organic compounds) combustion catalyst using metal organic framework as template and preparation method thereof
  • Cerium-based composite oxide VOCs (volatile organic compounds) combustion catalyst using metal organic framework as template and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] In the specific embodiment of the present invention, the cerium-based metal organic framework material used is Ce-BTC (the molecular formula is Ce(1,3, 5-BTC)(H 2 O) 6 ); The preparation method of Ce-BTC includes the following steps:

[0041] Take the cerium-based salt and organic ligand (mesitylene), configure the metal organic framework compound Ce(1, 3, 5-BTC) (H 2 O) 6 Precursor mixture of, stand, centrifuge, wash with solvent, filter, dry, and grind to obtain powdered sample Ce(1, 3,5-BTC)(H 2 O) 6 .

[0042] In the specific embodiment, for the decomposition temperature range of the cerium-based metal organic framework material Ce-BTC between 300°C and 500°C, the firing temperature is selected between 300°C and 500°C, the firing time is 6h, and the firing rate is 2°C / min. .

Example Embodiment

[0043] Example 1

[0044] MnOx-CeO 2 The specific steps for preparing the composite catalyst are as follows:

[0045] (1) Weigh 4.34 g Ce(NO 3 ) 3 • 6H 2 O was dissolved in 50 mL of deionized water, 2.10 g of mesitylene was dissolved in a mixture of 150 mL of deionized water and 200 mL of ethanol, and the above two solutions were mixed to obtain the precursor solution. The mixture was allowed to stand for 24 hours. Wash with deionized water 3 times, filter and dry to obtain Ce(1, 3, 5-BTC)(H 2 O) 6 , After X-ray diffraction structure analysis and comparison with simulated powder XRD diffraction patterns, it is determined as Ce(1, 3, 5-BTC)(H 2 O) 6 ;

[0046] Ce(1, 3, 5-BTC)(H 2 O) 6 The specific surface area is 715 m 2 / g;

[0047] (2) Weigh 0.8 g Ce(1, 3, 5-BTC)(H 2 O) 6 And 182μL 50wt% Mn(NO 3 ) 2 The solution was dispersed in a mixed solution of 20 mL of ethanol and water (ethanol: water = 1:1, v / v), allowed to stand at room temperature for 24 hours and then dried at 60°C. After g...

Example Embodiment

[0050] Example 2

[0051] MnOx-CeO 2 The specific steps for preparing the composite catalyst are as follows:

[0052] (1) Weigh 4.34 g Ce(NO 3 ) 3 • 6H 2 O was dissolved in 50 mL of deionized water, 2.10 g of mesitylene was dissolved in a mixture of 150 mL of deionized water and 200 mL of ethanol, and the above two solutions were mixed to obtain a precursor mixed solution. Let it stand for 24 hours and use it after centrifugation. Washed with ionized water 3 times, filtered and dried to obtain Ce(1, 3, 5-BTC)(H 2 O) 6 , After X-ray diffraction structure analysis and comparison with simulated powder XRD diffraction patterns, it is determined as Ce(1, 3, 5-BTC)(H 2 O) 6 ;

[0053] Ce(1, 3, 5-BTC)(H 2 O) 6 The specific surface area is 715 m 2 / g;

[0054] (2) Weigh 0.8 g Ce(1, 3, 5-BTC)(H 2 O) 6 And 182μL 50wt% Mn(NO 3 ) 2 The solution was dispersed in a mixed solution of 20 mL of ethanol and water (ethanol: water = 1:1, v / v). After standing for 24 hours at room temperature, the powder w...

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

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention discloses a cerium-based composite oxide VOCs (volatile organic compounds) combustion catalyst using a metal organic framework as a template and a preparation method thereof. The preparation method comprises the following steps of soaking and mixing cerium-based metal organic framework material and transition metal salt in a solvent; taking out the materials; drying the materials; grinding the materials into powder; roasting the materials in the air to obtain the cerium-based composite oxide VOCs combustion catalyst using the metal organic framework as the template. The metal organic framework is used for introducing into transition metal. Compared with cerium-based composite oxide prepared by a conventional method, the material has the advantages that the dispersion degree of the transition metal is greatly improved; the catalytic capability of the prepared cerium-based composite oxide on the organic waste gas is obviously improved; the higher catalytic activity is realized; after the cyclic multi-time catalysis reaction, good catalytic performance can still be maintained; the wide application prospects are realized in the organic waste gas catalytic oxidization field. Meanwhile, the preparation process of the method is simple and convenient; the implementation is easy; the preparation conditions are mild; the energy consumption is low; the industrial large-scaleproduction is facilitated.

Description

technical field [0001] The invention relates to the technical field of organic waste gas (VOCs) catalytic combustion (oxidation), in particular to a cerium-based composite oxide VOCs combustion catalyst using a metal-organic framework as a template and a preparation method thereof. Background technique [0002] Organic waste gas (VOCs) has become one of the main air pollutants in my country in recent years, which has a significant impact on the atmospheric environment and human health. Therefore, the purification and treatment technology of VOCs has become a research hotspot in the field of environmental catalysis. [0003] Catalytic combustion is one of the most effective technologies for VOCs treatment, and catalysts are the key to this technology. The catalyst should not only be cheap and easy to obtain, but also have high catalytic activity. Among the currently commonly used transition metal catalysts, cerium-based composite catalysts have been widely used in environmen...

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
IPC IPC(8): B01J23/10B01J23/34B01J35/10B01J37/02B01J37/08F23G7/07
CPCB01J23/10B01J23/34B01J35/1004B01J37/0201B01J37/086F23G7/07
Inventor 付名利林雪婷叶代启吴军良贺辉胡芸
Owner SOUTH CHINA UNIV OF TECH
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