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A kind of composite non-precious metal denitration catalyst and preparation method thereof

A denitrification catalyst and non-precious metal technology, which is applied in the field of composite non-precious metal denitrification catalyst and its preparation, can solve the problems of unsatisfactory catalytic efficiency, poor environmental protection, toxicity or pollution, etc., and achieve stable performance and wear resistance of the film layer Good performance and corrosion resistance, the effect of reducing toxic pollution

Active Publication Date: 2020-12-15
SUZHOU TAONE SINCERE NANOMATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two catalysts can treat flue gas under the condition of less than 200 degrees, but the above two preparation methods will produce toxic or polluting substances, and the environmental protection is poor. At the same time, in the actual use of the catalyst, the catalytic efficiency is not very ideal

Method used

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  • A kind of composite non-precious metal denitration catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A layer of catalyst layer is vapor-deposited on the zeolite by a vacuum coating machine, and the catalyst layer is Ti0 2 , which can be monocrystalline Ti0 2 , it can also be a mixed oxide in which multiple crystal forms coexist, such as rutile Ti0 2 and anatase Ti0 2 Mixing, in this embodiment, the catalyst layer is rutile Ti0 2 and anatase Ti0 2 mixed oxides, the thickness of which is 10nm; the parameters of evaporation conditions in the above process are as follows: the vacuum degree of the vacuum chamber is 4.9*10 -3Pa, the temperature of the vacuum chamber is 200 degrees, the gas used is argon, the target material parameters: Ti0 2 Target material, 1mm particles, density 80%, purity 99.95%, electron gun current set to 100mA, deposition rate controlled at According to the XRD standard card comparison, after evaporation, the rutile TiO 2 :Anatase TiO 2 =6.1:1.0 (Wt%).

[0027] It should be noted that, in this embodiment, the zeolite is a Y-type zeolite molec...

Embodiment 2

[0029] Evaporate a catalyst layer on the electrospun nanofiber by vacuum coating machine, the catalyst layer is V 2 o 5 , with a thickness of 7nm; the parameters of evaporation conditions in the above process are as follows: the vacuum degree of the vacuum chamber is 4*10 -3 Pa, the temperature of the vacuum chamber is 250 degrees, the gas used is nitrogen, the target material parameters: V 2 o 5 Target material, 2mm particles, density 62%, purity 99.96%, electron gun current set to 200mA, deposition rate controlled at

[0030] In this embodiment, the electrospun nanofibers are nylon 6 electrospun nanofibers, and the BET specific surface area is 133 mg / m 3 .

Embodiment 3

[0032] A catalyst layer is vapor-deposited on the glass fiber by a vacuum coating machine, and the catalyst layer is Cr 2 o 3 , with a thickness of 5nm; the parameters of evaporation conditions in the above process are as follows: the vacuum degree of the vacuum chamber is 3*10 -3 Pa, the temperature of the vacuum chamber is 300 degrees, the gas used is argon, the target parameter: Cr 2 o 3 Target material, 3mm particles, density 82%, purity 99.95%, electron gun current set to 300mA, deposition rate controlled at

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Abstract

The invention discloses a composite non-noble metal denitration catalyst and a preparation method thereof, wherein the composite non-noble metal denitration catalyst is realized through a coating evaporation process, so that toxic or polluting substances are not generated in the whole process, and the whole process is environment-friendly and clean; meanwhile, the raw materials are high-purity target materials, wherein the impurities such as nitrate and chloride ions do not need to be filtered out in the preparation process, so that toxic pollution of the impurities to the catalyst is reduced;meanwhile, the preparation steps are reduced, the activity of the catalyst and the utilization rate of the raw materials are improved, and the use amount of the raw materials is reduced due to the improvement of the utilization rate.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a composite non-precious metal denitration catalyst and a preparation method thereof. Background technique [0002] With the continuous development of industrial technology, the environmental protection requirements for industrial technology are getting higher and higher, especially the requirements for the treatment of industrial flue gas, industrial waste gas and automobile exhaust, and the treatment standards are more stringent. In the field of flue gas denitrification, in order to make the final discharge of flue gas meet the standard, it is generally used to treat the flue gas with a denitrification catalyst and / or adding a reducing agent, such as in NH 3 -SCR technology, V 2 o 5 -WO X / TiO 2 It is the most commercially available denitrification catalyst today. The active window temperature is 300-400 degrees. However, the thermal stability of the catalyst is poor, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08B01J31/36B01J23/26B01J27/24B01J23/75B01J23/755B01J29/76B01J29/14B01J27/051B01J27/22B01J37/02B01J37/34B01D53/86B01D53/56
CPCB01D53/8628B01D2257/402B01D2257/404B01D2258/0283B01J23/002B01J23/26B01J23/75B01J23/755B01J27/051B01J27/22B01J27/24B01J29/088B01J29/146B01J29/7607B01J31/36B01J37/0244B01J37/342Y02C20/10
Inventor 钱若棨钱敬吉
Owner SUZHOU TAONE SINCERE NANOMATERIAL TECH CO LTD
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