Attapulgite-loaded cerium-doped MnTiOX three-membered component low-temperature denitration catalyst and preparation method

A technology of attapulgite and low-temperature denitrification, which is applied in the field of flue gas denitrification. It can solve the problems of difficult fixation of active components, complicated process preparation, and small specific surface area, and achieve good mechanical and thermal stability, simple preparation process, and improved reaction. speed effect
CN108393085AActive Publication Date: 2018-08-14CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2018-08-14

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Abstract

The invention belongs to the field of flue gas denitrification, and particularly relates to an attapulgite-loaded cerium-doped MnTiOX three-membered component low-temperature denitration catalyst anda preparation method. Elliptoidal MnTiOX is prepared by the method, and elliptoidal MnTiOX is a spinel-type MnTi2O4 and Mn3O4 composite oxide, and cerium element is doped therein to form a three-membered metal oxide loaded on a non-metal clay attapulgite surface. Clay-type attapulgite with low cost is taken as a carrier of the catalyst, and loads a Ce-Mn-Ti three-membered composite oxide by a one-step precipitation method. The preparation process is simple, economical and practical, any template is not needed, the catalyst is easy to form, the capabilities of transmitting electrons and ions and storing oxygen by the catalyst are enhanced, the active reaction temperature is effectively lowered, the thermal stability and the service life of the catalyst are greatly improved and prolonged, the denitrification activity and sulfur resistance are improved, and an activity window is wide.
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Description

technical field

[0001] The invention belongs to the field of flue gas denitrification, in particular to an attapulgite-loaded cerium-doped MnTiO X A ternary component low-temperature denitrification catalyst and a preparation method thereof. Background technique

[0002] At present, more than 95% of thermal power plants in my country are mainly coal-fired, and it is difficult to change in the short term. Sulfur dioxide, carbon dioxide, nitrogen oxides and dust emitted during the coal combustion process account for a high amount of my country's emissions, especially the emission of nitrogen oxides seriously endangers human health and damages the ecological environment. my country's pollution has been quite serious, so NO X Sufficient attention should be paid to the control and governance of the system. The reducing agents used in the SCR reaction today mainly include ammonia (gaseous ammonia and urea), hydrocarbons and CO. Selective catalytic reduction (SCR) is the most wid...

Claims

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