Preparation method of cerium-based sulfate catalyst for SCR (selective catalytic reduction) reaction

A catalyst and sulfate technology, which is applied in the field of preparation of cerium-based SCR catalysts to achieve good application prospects and good catalytic activity.

Active Publication Date: 2017-05-10
BEIJING UNIV OF TECH
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there are no literature and patent reports on the use of such sulfate catalysts in SCR reactions

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 cerium-based sulfate catalyst for SCR (selective catalytic reduction) reaction
  • Preparation method of cerium-based sulfate catalyst for SCR (selective catalytic reduction) reaction
  • Preparation method of cerium-based sulfate catalyst for SCR (selective catalytic reduction) reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Accurately weigh 1.93g of Ce(SO 4 ) 2 , adding 9g of titanium dioxide, grinding and mixing at room temperature to obtain a mixture. The above mixture was added into a crucible with a lid, kept in a muffle furnace at 200°C for 2h, and then heated to 580°C for 3h to obtain 1# catalyst.

Embodiment 2

[0028] Accurately weigh 1.93g of Ce(SO 4 ) 2 , adding 18g of titanyl sulfate powder, grinding and mixing at room temperature to obtain a mixture. The above mixture was added into a crucible with a lid, kept in a muffle furnace at 200°C for 2h, and then heated to 400°C for 3h to obtain 2# catalyst.

Embodiment 3

[0030] Accurately weigh Ce with a mass of 3.16g 2 (C 2 o 4 ) 3 , adding 18g of titanyl sulfate powder, grinding and mixing at room temperature to obtain a mixture. The above mixture was added into a crucible with a lid, kept in a muffle furnace at 200°C for 2h, and then heated to 400°C for 3h to obtain 3# sample.

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

A preparation method of a cerium-based sulfate catalyst for SCR (selective catalytic reduction) reaction belongs to the technical field of preparation of a rare earth based SCR catalyst. The preparation method comprises the following steps: (1) weighing raw materials, mixing and ball-milling, wherein the Ce/Ti molar ratio is between 0.02 and 0.5; and (2) transferring the mixture to a muffle furnace, roasting at the temperature of 200 to 250 DEG C, preserving the temperature for 2 to 4 hours, and performing roasting at the temperature of 400 to 650 DEG C for 2 to 6 hours. The preparation method has the characteristics that the raw materials are cheap and easily available, the preparation process is simple, the preparation condition is easy to control, the preparation process is low in discharge and the like; and the obtained catalyst has high catalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a cerium-based SCR catalyst, and belongs to the technical field of preparation of rare earth-based SCR catalysts. Background technique [0002] Since the beginning of the 21st century, with the acceleration of urbanization, environmental problems have gradually become prominent, especially the continuous smog in recent years has aroused people's widespread concern and concern. The main cause of smog is atmospheric pollution. The concentration of PM2.5 seriously exceeds the standard, while nitrogen oxides (NO x ) is one of the precursors of PM2.5. Severe polluted weather has seriously interfered with people's normal life and work, and will also have adverse effects on human health. NO x It is one of the main pollutants in the atmosphere, and its main sources include automobile exhaust and emissions from industrial boilers (kilns). NO x Emission reduction is an important and challenging task at present...

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): B01J23/10B01D53/90B01D53/56
CPCB01D53/8628B01D53/90B01D2255/2065B01D2255/20707B01J23/10Y02P20/30
Inventor 何洪宋丽云苏垚超邱文革朱红太孙向丽
Owner BEIJING 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