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

Catalyst for purifying nitric oxide, and preparation method thereof

A technology of nitrogen oxides and catalysts, which is applied in the field of nano-catalysis, can solve the problem that the overall effect of nitrogen oxides purification is not very ideal, and achieve the effects of improving anti-SO2 poisoning performance, inhibiting SO2 poisoning, and improving oxygen storage capacity

Active Publication Date: 2012-07-18
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used carrier for nitrogen oxide purification is Al 2 o 3 , CeO 2 -ZrO 2 oxides or composite oxides, but their overall effect on the purification of nitrogen oxides is not very ideal
At present, there are no relevant literature and patent reports on the use of bauxite in the purification of nitrogen oxides

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
  • Catalyst for purifying nitric oxide, and preparation method thereof
  • Catalyst for purifying nitric oxide, and preparation method thereof
  • Catalyst for purifying nitric oxide, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) In the present invention, a solution containing 1wt% Cu will be prepared and loaded on the modified bauxite carrier with equal volume at room temperature. After drying at 120°C, impregnated with Ba(NO 3 ) 2 solution, the loading of Ba is 16wt%. Catalyst 1 is obtained after calcination at 400-550°C.

[0029] (2) Comparative sample Pt / Ba / Al 2 o 3 The preparation steps of: (i) Al 2 o 3 Synthesis of: Al(NO 3 ) 3 9H 2 O as raw material, dissolved in a certain amount of distilled water, with NH 3 ·H 2 O is a precipitant, centrifuged, dried, and roasted at 400-550°C. (ii) Load H separately 2 PtCl 6 ·6H 2 O and Ba(NO 3 ) 2 , and their loads are respectively: 1wt% and 16wt%, dried to take 20-30 mesh for later use.

Embodiment 2

[0031] (1) The present invention will prepare a solution containing 5wt% Cu, and load it on the modified bauxite carrier at room temperature with equal volume. After drying at 120°C, impregnated with Ba(NO 3 ) 2solution, the loading of Ba is 16wt%. Catalyst 2 is obtained after calcination at 400-550°C.

[0032] (2) Comparative sample Pt / Ba / Al 2 o 3 The preparation steps of: (i) Al 2 o 3 Synthesis of: Al(NO 3 ) 3 9H 2 O as raw material, dissolved in a certain amount of distilled water, with NH 3 ·H 2 O is a precipitant, centrifuged, dried, and roasted at 400-550°C. (ii) Load H separately 2 PtCl 6 ·6H 2 O and Ba(NO 3 ) 2 , and their loads are respectively: 1wt% and 16wt%, dried to take 20-30 mesh for later use.

Embodiment 3

[0034] (1) After modification, the bauxite is heat-treated at 130-170°C for 48h, 30%H 2 o 2 Treat for 10-24h, wash with distilled water to PH=7, dry, impregnate equal volume of 5wt% Cu solution and 16wt% Ba(NO 3 ) 2 , dried and calcined to obtain catalyst 3.

[0035] (2) Comparative sample Pt / Ba / Al 2 o 3 The preparation steps of: (i) Al 2 o 3 Synthesis: Al(NO 3 ) 3 9H 2 O as raw material, dissolved in a certain amount of distilled water, with NH 3 ·H 2 O is a precipitant, centrifuged, dried, and roasted at 400-550°C. (ii) Load H separately 2 PtCl 6 ·6H 2 O and Ba(NO 3 ) 2 , and their loads are respectively: 1wt% and 16wt%, dried, and take 20-30 meshes for later use.

[0036] The performance of embodiment catalyst is evaluated below

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
Login to View More

Abstract

The invention discloses a catalyst for purifying nitric oxide, and a preparation method of the catalyst. The catalyst comprises a bauxite carrier and one or more active ingredient(s) in transition metal ions such as Cu, Co and Mn or little precious metals such as Pt, Rh and Pd which is / are loaded on the bauxite carrier, wherein the weight of the active ingredient(s) is 1-10% of the total weight of the catalyst. The catalyst adopts one or more in alkali metals such as Li, Na, K and Rb or alkaline-earth metals such as Mg, Ca, Ba and Sr as accessory ingredient, and the weight of the alkali metal(s) and the alkaline-earth metal(s) is 10-30% of the total weight of the catalyst. The purification effect and the service life of the catalyst are superior to those of the traditional Pt / Ba / Al2O3 catalyst; and the catalyst is convenient to operate, low in cost and good in purification effect, and has obvious industrial application value.

Description

technical field [0001] The invention belongs to the field of nano-catalysis application, and in particular relates to the application of bauxite to the purification of nitrogen oxides in automobile tail gas and industrial waste gas. Background technique [0002] Nitrogen oxides are one of the main pollutants in the atmospheric environment, which can easily cause acid rain and photochemical smog, cause damage to humans and plants, and participate in the destruction of the ozone layer. Its sources mainly include two parts: active sources (exhaust gas emitted by motor vehicles) and stationary sources (exhaust gas from power plants and coal combustion). [0003] At present, nitrogen oxide purification catalysts mainly consist of three parts, namely catalyst carrier, active coating and catalytic active components. In order to improve the performance of the catalyst, a small amount of rare earth oxides and alkaline earth metal oxides are often added to the active coating and cata...

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): B01J23/89B01D53/86B01D53/56
Inventor 王瑞虎王秀云洪茂椿
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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