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Hollow porous microsphere catalytic material and preparation method thereof and application in NO degradation

A technology of porous microspheres and catalytic materials, applied in the field of denitrification catalyst nanomaterials, can solve the problems of small specific surface area, etc., and achieve the effect of large specific surface area, good medium and low temperature denitrification performance, and simple raw materials

Inactive Publication Date: 2018-05-29
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing denitration catalysts such as irregular shape and small specific surface area, and provide a simple and feasible soft template-hydrothermal method to synthesize a series of new cerium oxide composite cobalt-manganese spinels (CeOx-(Co,Mn) 3 o 4 ) hollow porous denitrification catalytic nanomaterials

Method used

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  • Hollow porous microsphere catalytic material and preparation method thereof and application in NO degradation
  • Hollow porous microsphere catalytic material and preparation method thereof and application in NO degradation
  • Hollow porous microsphere catalytic material and preparation method thereof and application in NO degradation

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Embodiment 1

[0029] A simple hydrothermal synthesis of cerium oxide composite cobalt-manganese (CeOx-(Co,Mn) 3 o 4 ) spinel denitration catalyst nanomaterials, prepared according to the following steps:

[0030] Step 1, cleaning solution preparation: mix concentrated hydrochloric acid and concentrated sulfuric acid in a volume ratio of 3:1 to prepare aqua regia, which is used as a clear solution for glass beakers and polytetrafluoroethylene reaction tanks;

[0031] Step 2, cleaning: Soak all the glass instruments used in the experiment with the prepared aqua regia for 10-20 minutes, then place them in an ultrasonic cleaner for 30 minutes, then wash them with distilled water for more than 10 times, and finally put them in a 70°C constant temperature drying oven drying spare;

[0032] Step 3, weigh 0.58g of cobalt nitrate Co(NO 3 ) 2 ·6H 2 O, stirred at 30°C for 20 minutes, dissolved in 15mL of ethylene glycol;

[0033] Step 4, weigh the manganese nitrate Mn(NO 3 ) 2 4H 2 O and 0.02...

Embodiment 2

[0040] A simple hydrothermal synthesis of cerium oxide composite cobalt-manganese (CeOx-(Co,Mn) 3 o 4 ) spinel denitration catalyst nanomaterials, prepared according to the following steps:

[0041] Step 1, cleaning solution preparation: mix concentrated hydrochloric acid and concentrated sulfuric acid in a volume ratio of 3:1 to prepare aqua regia, which is used as a clear solution for glass beakers and polytetrafluoroethylene reaction tanks;

[0042] Step 2, cleaning: Soak all the glass instruments used in the experiment with the prepared aqua regia for 10-20 minutes, then place them in an ultrasonic cleaner for 30 minutes, then wash them with distilled water for more than 10 times, and finally put them in a 70°C constant temperature drying oven drying spare;

[0043] Step 3, weigh 0.58g of cobalt nitrate Co(NO 3 ) 2 ·6H 2 O, stirred at 30°C for 20 minutes, dissolved in 15mL of ethylene glycol;

[0044] Step 4, weigh the manganese nitrate Mn(NO 3 ) 2 4H 2 O and 0.07...

Embodiment 3

[0051] A simple hydrothermal synthesis of cerium oxide composite cobalt-manganese (CeOx-(Co,Mn) 3 o 4 ) spinel denitration catalyst nanomaterials, prepared according to the following steps:

[0052] Step 1, cleaning solution preparation: mix concentrated hydrochloric acid and concentrated sulfuric acid in a volume ratio of 3:1 to prepare aqua regia, which is used as a clear solution for glass beakers and polytetrafluoroethylene reaction tanks;

[0053] Step 2, cleaning: Soak all the glass instruments used in the experiment with the prepared aqua regia for 10-20 minutes, then place them in an ultrasonic cleaner for 30 minutes, then wash them with distilled water for more than 10 times, and finally put them in a 70°C constant temperature drying oven drying spare;

[0054] Step 3, weigh 0.58g of cobalt nitrate Co(NO 3 ) 2 ·6H 2 O, stirred at 30°C for 20 minutes, dissolved in 15mL of ethylene glycol;

[0055] Step 4, weigh the manganese nitrate Mn(NO 3 ) 2 4H 2 O and 0.12...

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Abstract

The invention provides a hollow porous microsphere catalytic material and a preparation method thereof and application in NO degradation. The preparation method includes solution preparation, solutionmixing, mixed solution reaction and sample calcination. A series of novel hollow porous structure CeOx-(Co,Mn)3O4 spinel nanomaterials with a uniform size are successfully prepared for the first timeby simple adjusting of the amounts of surfactant polyethylene glycol and cerous nitrate. Due to the innovation of the preparation method, the raw materials used are simpler than that of other conventional synthesis methods, and the process is relatively simple, and the cost can be effectively reduced. The novel hollow porous nanostructure-novel material CeOx-(Co,Mn)3O4 is prepared by using a softtemplate-hydrothermal method, the novel hollow porous nanostructure-novel material CeOx-(Co,Mn)3O4 has a unique hollow porous structure, allowing a catalyst to have a large specific surface area, anda resultant product has the advantages of uniform morphology, high purity and excellent denitrification performance.

Description

technical field [0001] The invention belongs to the technical field of denitrification catalyst nanomaterials for synthesizing hollow porous cerium oxide composite cobalt-manganese spinel by simple and easy soft template-hydrothermal method, and more specifically relates to a novel cerium oxide composite cobalt-manganese spinel Spar (CeOx-(Co,Mn) 3 o 4 ) Hollow porous nanomaterial and its preparation method and application. Background technique [0002] In recent years, with the development of my country's modern industry and the acceleration of urbanization, energy consumption, especially fossil energy consumption, has increased significantly, and the corresponding problem of air pollution caused by exhaust emissions has become increasingly prominent. Nitrogen oxides NOx is one of the main air pollution, in which the air pollutants are mainly NO and NO 2 . Selective catalytic reduction (SCR) technology is the most widely used, mature and effective flue gas denitrificati...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/08B01J35/10B01J37/10B01D53/86B01D53/90B01D53/56
CPCB01D53/8628B01D53/90B01J23/005B01J23/8892B01J37/10B01J35/39B01J35/60B01J35/51
Inventor 鲁逸人陈鹏童银栋李振国凌涛刘宪华张立红任晓宁毛晶李莉
Owner TIANJIN UNIV
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