Catalyst for decomposing nitrogen oxide and preparation method thereof

一种催化剂、共催化剂的技术，应用在催化剂活化/制备、物理/化学过程催化剂、分离方法等方向，能够解决废气经济损失、加强空间限制等问题，达到提高脱硝效率、提高抗硫中毒特性、脱硝效率提高的效果

Active Publication Date: 2014-04-09
KOREA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the use temperature of the catalyst is limited to about 300°C in this way, space restrictions are imposed to install the catalyst, and economic loss occurs for artificially increasing the temperature of the exhaust gas

Method used

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  • Catalyst for decomposing nitrogen oxide and preparation method thereof
  • Catalyst for decomposing nitrogen oxide and preparation method thereof
  • Catalyst for decomposing nitrogen oxide and preparation method thereof

Examples

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Embodiment Construction

[0021] Hereinafter, the present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The drawings and descriptions should be regarded as illustrative in nature and not restrictive. Like reference numerals refer to like elements throughout the specification. Also, detailed descriptions of known techniques will be omitted.

[0022] Then, a catalyst for decomposing nitrogen oxides and a preparation method thereof according to an embodiment will be described in detail.

[0023] Exemplary embodiments relate to a catalyst for selectively removing nitrogen oxides in exhaust gas by a reduction method, denitrification characteristics at low and high temperatures may be improved, and sulfur poisoning resistance cha...

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PUM

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Abstract

Provided is a catalyst including: a support including titanium oxide; an active catalyst component including vanadium oxide; and a co-catalyst including antimony and cerium, in which the catalyst is included in a deNox reduction reaction that decomposes nitrogen oxide. The catalyst may improve sulfur poisoning tolerance characteristics while improving the deNox efficiency at a temperature in a wide range from low temperature to high temperature.

Description

technical field [0001] Provided are a catalyst for decomposing nitrogen oxides and a method for preparing the catalyst. Background technique [0002] Nitric oxide (NO x ) are typically produced during the combustion of fossil fuels and are produced from mobile sources such as ships or vehicles, or stationary sources such as power plants or incinerators. Nitrogen oxides are responsible for acid rain and smog, and have been recognized as one of the main contributors to atmospheric pollution. Recently, due to the enforcement of stricter regulations on the atmospheric environment, and in response thereto, a great deal of research on decomposing nitrogen oxides using a reducing agent has been conducted. [0003] Among them, one that uses ammonia or the like as a reducing agent and uses titanium oxide (TiO 2 ) support and vanadium oxide (V 2 o 5 ) as a catalyst as a method for removing nitrogen oxides emitted from vehicles, ships, etc. that use diesel engines in stationary or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22B01D53/90B01D53/56
CPCB01D2255/65B01J37/04B01D2251/208B01D53/9418B01D2255/20723B01J37/08B01J21/063B01J23/22B01D2251/2067B01D2255/2065B01D2258/012B01D53/94B01D53/8628B01J21/06B01D53/56
Inventor 河宪弼李庚柱
Owner KOREA INST OF SCI & TECH
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