A kind of supported metal oxide catalyst with titanium aluminum carbide as carrier and its preparation method and application

A titanium aluminum carbide and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., can solve problems such as NH3 loss, high equipment requirements, and environmental pollution

Active Publication Date: 2022-04-22
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But using NH 3 As a reducing agent, there are the following problems: (1) there is NH 3 escape, causing environmental pollution; (2) NH 3 The transportation is difficult and the cost is high, the corrosion ability to the equipment is strong, and the requirements for the equipment are very high; (3) SO 2 Easy to NH in the presence of acidic gases 3 reaction, generating other products, causing loss of NH3 and deactivation of the catalyst

Method used

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  • A kind of supported metal oxide catalyst with titanium aluminum carbide as carrier and its preparation method and application
  • A kind of supported metal oxide catalyst with titanium aluminum carbide as carrier and its preparation method and application
  • A kind of supported metal oxide catalyst with titanium aluminum carbide as carrier and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Weigh 1.946g Ti 3 AlC 2 Mix with 20ml of absolute ethanol, add 4.2028g of citric acid monohydrate, stir in a water bath at 40°C, then add 2ml of ethylene glycol dropwise into the mixture as a dispersant, stir until the mixture is evaporated to dryness to obtain a viscous glue dried in an oven at 150°C for 12 hours to obtain fluffy dry glue, which was ground into powder to obtain porous Ti 3 AlC 2 Precursor carrier. Weigh 2.451g of manganese acetate tetrahydrate and dissolve it in 30ml of deionized water. After it is fully dissolved, add 1.946g of Ti 3 AlC 2 The precursor carrier was fully stirred in a water bath at 60°C until the water was evaporated to dryness, then dried in an oven at 120°C for 10 hours, and finally baked in a muffle furnace at 500°C for 6 hours to obtain Mn 3 o 4 / Ti 3 AlC 2 Denitration catalyst samples

[0047] The obtained samples were tested for denitrification activity, and the catalytic activity test method was as follows: put the cataly...

Embodiment 2

[0049] Weigh 1.946g Ti 3 AlC 2 Mix with 20ml of absolute ethanol, add 4.2028g of citric acid monohydrate, stir in a water bath at 40°C, then add 2ml of ethylene glycol dropwise into the mixture as a dispersant, stir until the mixture is evaporated to dryness to obtain a viscous glue dried in an oven at 150°C for 12 hours to obtain fluffy dry glue, which was ground into powder to obtain porous Ti 3 AlC 2 Precursor carrier. Weigh 3.677g of manganese acetate tetrahydrate and dissolve it in 50ml of deionized water. After it is fully dissolved, add 1.946g of Ti 3 AlC 2 The precursor carrier was fully stirred in a water bath at 60°C until the water was evaporated to dryness, then dried in an oven at 120°C for 10 hours, and finally baked in a muffle furnace at 500°C for 6 hours to obtain Mn 3 o 4 / Ti 3 AlC 2 Denitrification catalyst samples.

[0050] The obtained samples were tested for denitrification activity, and the catalytic activity test method was as follows: put the ...

Embodiment 3

[0052] Weigh 1.946g Ti 3 AlC 2 Mix with 20ml of absolute ethanol, add 4.2028g of citric acid monohydrate, stir in a water bath at 40°C, then add 2ml of ethylene glycol dropwise into the mixture as a dispersant, stir until the mixture is evaporated to dryness to obtain a viscous glue dried in an oven at 150°C for 12 hours to obtain fluffy dry glue, which was ground into powder to obtain porous Ti 3 AlC 2 Precursor carrier. Weigh 4.040 grams of ferric nitrate nonahydrate and dissolve it in 30ml deionized water. After it is fully dissolved, add 1.946g Ti 3 AlC 2 The precursor carrier was fully stirred in a water bath at 60°C until the water evaporated to dryness, then dried in an oven at 120°C for 10 hours, and finally baked in a muffle furnace at 500°C for 6 hours to obtain Fe 2 o 3 / Ti 3 AlC 2 Denitrification catalyst samples.

[0053] The obtained sample was tested for denitrification activity. The catalytic activity test method is: put the catalyst in a fixed bed of ...

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Abstract

The invention discloses a supported metal oxide catalyst with titanium-aluminum carbide as a carrier, its preparation method and application. 3 AlC 2 ) and other metal salts as raw materials, the Ti 3 AlC 2 The powder is processed to prepare a porous material, and then the treated Ti 3 AlC 2 The porous material is used as the precursor carrier, and the active metal elements such as Mn and Fe are loaded on it by the impregnation method, and the supported metal oxide catalyst can be prepared after high-temperature calcination. The crystal form of the supported metal oxide catalyst of the present invention is intact and exists in the form of amorphous particles. A large number of active metal oxides are attached to the surface of the carrier, and there are a large number of micropores and mesopores with different pore diameters on the surface of the particles, which are conducive to the formation of gas molecules. In and out, adsorption and desorption are carried out on the surface of the catalyst, and the effect is outstanding.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, and relates to a Ti 3 AlC 2 A supported metal oxide catalyst as a carrier, its preparation method and application. Background technique [0002] One of the main pollutants in my country is nitrogen oxides (NO x ) prevention, control, control and emission reduction work has become one of the important tasks in my country's air pollution control. At present, flue gas denitration technology can be divided into dry method and wet method according to the state of denitrification agent and by-products entering and exiting the absorber. Among them, the dry denitrification technology research is more selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR), plasma method, activated carbon adsorption method and so on. The dry process technology has simple equipment and process, high removal efficiency of nitrogen oxides, and no waste water and waste treatment. Among th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/22B01J35/10B01D53/86B01D53/56
CPCB01J27/22B01J35/10B01D53/8628
Inventor 何汉兵张业林李韧姚超良马英杨有余
Owner CENT SOUTH UNIV
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