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Cobalt-manganese composite metal oxide catalyst for removing low-concentration methane gas through coupled electrostatic field synergy and preparation method thereof

A methane gas and composite metal technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problem of low-temperature efficiency of non-precious metal catalysts and low-concentration dilute methane Removing difficulties and other problems, achieving the effect of significant synergistic effect, convenient operation and improved removal efficiency

Inactive Publication Date: 2018-09-14
上海倍绿环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to solve the problems of difficult removal of low-concentration dilute methane and low-temperature efficiency of non-precious metal catalysts

Method used

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  • Cobalt-manganese composite metal oxide catalyst for removing low-concentration methane gas through coupled electrostatic field synergy and preparation method thereof
  • Cobalt-manganese composite metal oxide catalyst for removing low-concentration methane gas through coupled electrostatic field synergy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First, the determination of the loading amount of the main active ingredient of the metal oxide:

[0033] According to the molar ratio of Co:Mn=5:1, the mass ratio is calculated as Co(NO 3 ) 2 ·6H 2 O: 50% Mn(NO 3 ) 2 Aqueous solution=4.066:1, according to containing 1g of 50% Mn(NO 3 ) 2 Based on the calculation of the precursor of the aqueous solution, the mass of the required glycine can be obtained as (((1 / 357.9)*(2+2*5)*5) / 9)*75.07=1.398g, thus the catalyst-loaded drug can be obtained The dosage is respectively: 50% Mn(NO 3 ) 2 Aqueous solution 10g, Co(NO 3 ) 2 ·6H 2 O 40.66g, glycine 13.98g.

[0034] Second, Co 3 o 4 , Mn 3 o 2 Loading of main active ingredients:

[0035] Weigh the required Co(NO 3 ) 2 ·6H 2 O and 50% Mn(NO 3 ) 2 Aqueous solution, according to every 20g Co(NO 3 ) 2 ·6H 2 O and 50% Mn(NO 3 ) 2 The total mass of the aqueous solution is dissolved in 15-20ml of deionized water, mixed with deionized water, stirred on a magneti...

Embodiment 2

[0039] First, the determination of the loading amount of the main active ingredient of the metal oxide:

[0040] According to the molar ratio of Co:Mn=3:1, the mass ratio is calculated as Co(NO 3 ) 2 ·6H 2 O: 50% Mn(NO 3 ) 2 Aqueous solution=2.439:1, according to containing 1g of 50% Mn(NO 3 ) 2 Based on the calculation of the precursor of the aqueous solution, the mass of the required glycine can be obtained as (((1 / 357.9)*(2+2*5)*5) / 9)*75.07=0.932g, thus the catalyst-loaded drug can be obtained The dosage is respectively: 50% Mn(NO 3 ) 2 Aqueous solution 10g, Co(NO 3 ) 2 ·6H 2 O 24.39g, Glycine 9.32g.

[0041] Second, Co 3 o 4 , Mn 3 o 2 Loading of main active ingredients:

[0042] Weigh the required Co(NO 3 ) 2 ·6H 2 O and 50% Mn(NO 3 ) 2 Aqueous solution, according to every 20gCo(NO 3 ) 2 ·6H 2 O and 50% Mn(NO 3 ) 2 The total mass of the aqueous solution is dissolved in 15-20ml of deionized water, mixed with deionized water, stirred on a magnetic ...

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Abstract

The invention discloses a cobalt-manganese composite metal oxide catalyst for removing low-concentration methane gas through coupled electrostatic field synergy and belongs to the technical field of volatile organic matter discharge control and pollutant control. Oxide of manganese is adopted as a carrier, a main active component is Co3O4, and mass percent of a manganese-based carrier and that ofactive component-cobalt are determined according to a molar ratio of cobalt and manganese elements. The cobalt-manganese composite metal oxide catalyst is synthesized by adopting a self-propagating high-temperature burning synthesis method. The catalyst has remarkable effect on removing methane and remarkable synergistic effect with an electrostatic field, and methane removal rate at each temperature point in a low-temperature section after being coupled with a direct-current electrostatic field can be increased by 20% at least and by 30% at most, and initiation temperature can be lowered by 60 DEG C at least. Raw materials for preparing the catalyst are low in cost and easy to get, and the catalyst is simple in preparation process, nontoxic, harmless, pollution-free and convenient for operation.

Description

technical field [0001] The invention relates to a cobalt-manganese composite metal oxide catalyst that couples an electrostatic field to cooperatively remove low-concentration methane gas. More specifically, the present invention relates to a 3 o 4 , Mn 3 o 2 The active component is a cobalt-manganese composite metal oxide catalyst that can effectively remove low-concentration methane gas at a low-temperature stage by coupling an electrostatic field, and belongs to the technical field of volatile organic compound (VOCs) emission control pollutant control. Background technique [0002] With the rapid growth of the world's energy demand and strict requirements on environmental protection, the support and substitution role of natural gas in the world's energy supply is becoming more and more obvious and important. As a clean energy, natural gas is increasingly favored by various countries, and is regarded as the most promising clean fuel. [0003] Methane, the main chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J37/08B01D53/86B01D53/72B01D53/32
CPCB01D53/323B01D53/8668B01J23/002B01J23/8892B01J37/086B01D2257/7025B01J35/33Y02C20/20
Inventor 李熙春
Owner 上海倍绿环保科技有限公司
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