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

Preparation method of composite oxide denitration catalyst with hexagonal boron nitride as carrier

A hexagonal boron nitride and composite oxide technology, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. The effect of widening the operating temperature window, high catalytic activity and simple preparation process

Active Publication Date: 2019-04-16
SHANGHAI UNIV
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, Hu Hang et al. (Hu H, Cai S, Li H, et al. Mechanistic aspects of deNO X processing over TiO 2 supported Co-Mn oxide catalysts: structure-activity relationships and in situ DRIFTs analysis[J]. ACS Catal, 2015, 5, 6069-6077.) and Xin Zhao, Lei Huang, Supawadee Namuangruk, et al. Morphology -dependent performance of Zr-CeVO4 / TiO2 for selective catalytic reduction ofNO with NH3[J]. Catal. Sci. Technol, 2016. DOI: 10.1039 / c6cy00326e) found that Mn-Co binary composite oxide and ZrCeVO 4 Ternary composite oxide supported TiO 2 The catalysts all have certain nitrogen oxides NH 3 - SCR catalytic ability, but the catalytic efficiency needs to be improved

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 composite oxide denitration catalyst with hexagonal boron nitride as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Hexagonal boron nitride was pretreated in concentrated nitric acid at 60°C for 3 hours, the suspension was filtered off, washed with deionized water until the pH value reached 7, and then the obtained precipitate was dried at 100°C. Take 2g of pretreated hexagonal boron nitride and add it into a 50ml flask containing a certain amount of deionized water, and stir at room temperature for 30min. The manganese acetate of 0.3470g and the cobalt acetate precursor salt of 1.0588g are joined in the beaker that contains 20ml deionized water, and the target makes the catalyst after calcining have the cobalt manganese ratio of 3:1, makes the quality of manganese oxide account for total mass 5%. Then, the prepared precursor salt solution was added into the flask containing hexagonal boron nitride, evaporated using a rotary evaporator for 3 hours, and dried in an oven at 80° C. for 18 hours. The product was taken out from the flask and ground in a mortar, then placed in a tube furn...

Embodiment 2

[0023] Hexagonal boron nitride was pretreated in concentrated nitric acid at 60°C for 3 hours, the suspension was filtered off, washed with deionized water until the pH value reached 7, and then the obtained precipitate was dried at 100°C. Take 2g of pretreated hexagonal boron nitride and add it into a 50ml flask containing a certain amount of deionized water, and stir at room temperature for 30min. The manganese acetate of 0.3470g and the cobalt acetate precursor salt of 0.3487g are joined in the beaker that contains 20ml deionized water, and the target makes the catalyst after calcining have the cobalt manganese ratio of 1:1, makes the quality of manganese oxide account for the total mass 5%. Then, the prepared precursor salt solution was added into the flask containing hexagonal boron nitride, evaporated using a rotary evaporator for 3 hours, and dried in an oven at 80° C. for 18 hours. The product was taken out from the flask and ground in a mortar, then placed in a tube ...

Embodiment 3

[0026] Hexagonal boron nitride was pretreated in concentrated nitric acid at 60°C for 3 hours, the suspension was filtered off, washed with deionized water until the pH value reached 7, and then the obtained precipitate was dried at 100°C. Take 2g of pretreated hexagonal boron nitride and add it into a 50ml flask containing a certain amount of deionized water, and stir at room temperature for 30min. The manganese acetate of 0.3470g and the cobalt acetate precursor salt of 0.6974g are joined in the beaker that contains 20ml deionized water, and the target makes the catalyst after calcining have the cobalt manganese ratio of 2:1, makes the quality of manganese oxide account for the total mass 5%. Then, the prepared precursor salt solution was added into the flask containing hexagonal boron nitride, evaporated using a rotary evaporator for 3 hours, and dried in an oven at 80° C. for 18 hours. The product was taken out from the flask and ground in a mortar, then placed in a tube ...

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 method for preparing a denitration catalyst by taking hexagonal boron nitride as a carrier as well as binary or ternary composite oxide as an active component, which belongs to the technical field of a supported denitration catalyst and field of environment protection. The method is characterized in that hexagonal boron nitride is taken as the carrier, a rotary evaporation immersion method is used for loading the multi-component metal on the surface of hexagonal boron nitride, uniform dispersion of the metals and strong interacting can be realized, and the high-efficiency denitration catalyst can be obtained through calcining. The catalyst uses hexagonal boron nitride with good thermostability and oxidation stability as the carrier, the supported multi-component metals can generate cooperative effect, catalytic activity of the catalyst is effectively increased, and the temperature window is widened. The method has the advantages of environment protection and simple production technology, and is adapted to large-scale industrial production, and can be used for removing nitrogen oxide discharged from a fixed source and a moving source.

Description

technical field [0001] The invention relates to a method for preparing a supported catalyst with hexagonal boron nitride as a carrier, belonging to the technical field of nitrogen oxide control and purification in environmental protection, and the catalyst can be used for removing nitrogen oxides emitted from stationary sources and mobile sources. Background technique [0002] Nitrogen oxides are a common air pollutant. As we all know, nitrogen oxides can cause acid rain, photochemical smog and smog, and also cause direct damage to the human respiratory system. There are two main sources of nitrogen oxides: on the one hand, natural sources and on the other hand, man-made sources. Anthropogenic sources can be further divided into two categories: one is stationary sources, mainly including exhaust emissions from power plants and industrial boilers; the other is mobile sources, most of which come from exhaust emissions from gasoline and diesel vehicles. Among them, man-made so...

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): B01J27/24B01J23/889B01D53/86B01D53/56
CPCB01D53/8628B01D2258/0283B01J23/002B01J23/8892B01J27/24
Inventor 张登松施利毅查凯文张剑平李红蕊
Owner SHANGHAI UNIV
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