Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A wide temperature type phosphorus-containing cerium-based denitrification catalyst and preparation method thereof

A denitration catalyst, cerium-based technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as poor catalytic activity

Inactive Publication Date: 2018-03-09
THE NORTHWEST RES INST OF CHEM IND
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101642715A discloses a cerium pyrophosphate catalyst, although the temperature has higher denitration efficiency above 350°C, but the catalytic activity is relatively poor at temperatures below 350°C

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
  • A wide temperature type phosphorus-containing cerium-based denitrification catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1: Preparation of phosphorus-containing cerium-based denitration catalyst of the present invention

[0084] The implementation steps of this embodiment are as follows:

[0085] I, preparation solution A

[0086] Dissolve cerous nitrate in deionized water to obtain a cerous nitrate aqueous solution, and then add the cerous nitrate aqueous solution to the pyrophosphoric acid aqueous solution according to the molar ratio of cerous nitrate and pyrophosphoric acid as 1.0:1, and stir evenly Obtain solution A;

[0087] II. Prepare Solution B

[0088] According to the mol ratio of cerous nitrate and urea is 1.2:10, in the solution A that step 1 obtains, slowly add urea, allow urea to dissolve completely, obtain solution B;

[0089] III. Prepare Solution C

[0090] Dissolving manganese acetate in deionized water to obtain an aqueous solution of manganese acetate, and then slowly adding the aqueous solution of manganese acetate to solution B according to the molar rat...

Embodiment 2

[0096] Example 2: Preparation of phosphorus-containing cerium-based denitration catalyst of the present invention

[0097] The implementation steps of this embodiment are as follows:

[0098] I, preparation solution A

[0099] Dissolve cerous nitrate in deionized water to obtain a cerous nitrate aqueous solution, and then add the cerous nitrate aqueous solution to the pyrophosphoric acid aqueous solution according to the molar ratio of cerous nitrate and pyrophosphoric acid as 2.4:1, and stir evenly Obtain solution A;

[0100] II. Prepare Solution B

[0101] Be 2.2:10 according to the mol ratio of cerous nitrate and urea, slowly add urea in the solution A that step 1 obtains, allow urea to dissolve completely, obtain solution B;

[0102] III. Prepare Solution C

[0103] Dissolving manganese acetate in deionized water to obtain an aqueous solution of manganese acetate, and then slowly adding the aqueous solution of manganese acetate to solution B according to the molar rati...

Embodiment 3

[0109] Example 3: Preparation of phosphorus-containing cerium-based denitration catalyst of the present invention

[0110] The implementation steps of this embodiment are as follows:

[0111] I, preparation solution A

[0112] Dissolve cerous nitrate in deionized water to obtain a cerous nitrate aqueous solution, and then add the cerous nitrate aqueous solution to the pyrophosphoric acid aqueous solution according to the molar ratio of cerous nitrate and pyrophosphoric acid as 3.6:1, and stir evenly Obtain solution A;

[0113] II. Prepare Solution B

[0114] According to the mol ratio of cerous nitrate and urea is 0.5:10, slowly add urea in the solution A that step 1 obtains, allow urea to dissolve completely, obtain solution B;

[0115] III. Prepare Solution C

[0116] Dissolving manganese acetate in deionized water to obtain an aqueous solution of manganese acetate, and then slowly adding the aqueous solution of manganese acetate to solution B according to the molar rati...

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 relates to a wide temperature phosphorus-containing cerium-based denitration catalyst and a preparation method thereof. The catalyst is mainly composed of cerium phosphate (CePO4) and manganese oxide Mn2O3 in a molar ratio of 1:0.5-3. The wide temperature phosphorus-containing cerium-based denitration catalyst of the present invention has a temperature range of 150-500° C. for removing nitrogen oxides, and the denitration stability and N2 selectivity are high, especially the phosphorus-containing cerium-based denitration catalyst of the present invention has The removal effect of nitrogen oxides in the low temperature region (150-350℃) is good, and the conversion rate of nitrogen oxides all reach more than 90%.

Description

【Technical field】 [0001] The invention belongs to the technical field of environmental protection. More specifically, the present invention relates to a wide-temperature type phosphorus-containing cerium-based denitration catalyst, and also relates to a preparation method of the wide-temperature type phosphorus-containing cerium-based denitration catalyst. 【Background technique】 [0002] Nitrogen oxides are mainly produced by the high-temperature combustion of fossil fuels in the air, and nitrogen oxides produced in the combustion of fossil fuels (petroleum, coal, natural gas) account for more than 90%. With the rapid development of industry, excessive nitrogen oxides from vehicle exhaust and coal-fired flue gas have brought great pollution to the atmosphere, and the concentration of nitrogen oxides is still increasing year by year. NO can produce chemical smog under sunlight, which poses a great threat to the human respiratory system; at the same time, it can also damage t...

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 Patents(China)
IPC IPC(8): B01J27/187B01D53/86B01D53/56
Inventor 李飞仵静黄伟侯鑫刘程
Owner THE NORTHWEST RES INST OF CHEM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com