Application of general formula AM<2>O<5-x> compound as catalyst for catalyzing VOC combustion

An am2o5-x, ​​compound technology, applied in the application field of catalyst, can solve the problem of high cost of VOC treatment catalyst, and achieve the effect of good catalytic effect, long service life and low cost

Active Publication Date: 2019-11-12
栗豹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Main object of the present invention is to provide a kind of general formula AM 2 o 5-x Application of compounds as catalysts to catalyze VOC combustion to solve the problem of high cost of VOC treatment catalysts in existing noble metal technologies

Method used

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  • Application of general formula AM&lt;2&gt;O&lt;5-x&gt; compound as catalyst for catalyzing VOC combustion
  • Application of general formula AM&lt;2&gt;O&lt;5-x&gt; compound as catalyst for catalyzing VOC combustion
  • Application of general formula AM&lt;2&gt;O&lt;5-x&gt; compound as catalyst for catalyzing VOC combustion

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Embodiment 1

[0046] The VOC gas introduced is propane with a concentration of 1000 ppm, the gas flow rate is 40 ml / min, and the catalyst has a particle size of 20 to 45 nm and a specific surface area of ​​30 to 55 m. 2 / g of SmMn 2 O 5 After granulation, select particles with a size of 80-100 mesh for propane catalysis, the dosage is 100mg, and the reaction space velocity is 24000ml·g -1 ·H -1 , The conversion rate of propane is represented by the consumption rate of reactants, and the test results are shown in figure 1 . The result shows the T of propane 50 (Representing the temperature at which the conversion rate is 50%) is 217°C, T 90 (Representing the temperature at which the conversion rate is 90%) is 251°C.

Embodiment 2

[0048] The VOC gas introduced is butane with a concentration of 1000ppm, the gas flow rate is 40ml / min, the catalyst has a particle size of 20~45nm and a specific surface area of ​​30~55m 2 / g of SmMn 2 O 5 After granulation, select particles with a particle size of 80-100 mesh for butane catalysis, the dosage is 50mg, and the reaction space velocity is 48000ml·g -1 ·H -1 , The conversion rate of butane is determined by CO 2 Generation rate, see the test results figure 2 . The result shows the T of butane 50 (Representing the temperature when the conversion rate is 50%) is 235℃, T 90 (Represents the temperature at which the conversion rate is 90%) is 300°C.

Embodiment 3

[0050] The VOC gas introduced is propylene with a concentration of 1000ppm, the gas flow rate is 40ml / min, and the catalyst has a particle size of 20~45nm and a specific surface area of ​​30~55m. 2 / g of SmMn 2 O 5 After granulation, select particles with a size of 80-100 mesh for propylene catalysis, the dosage is 100mg, and the reaction space velocity is 24000ml·g -1 ·H -1 , The conversion rate of propylene is expressed by the consumption rate of reactants, and the test results are shown in image 3 . The result shows that the T of propylene 50 (Representing the temperature at which the conversion rate is 50%) is 161°C, T 90 (Representing the temperature at which the conversion rate is 90%) is 189°C.

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Abstract

The invention provides an application of a general formula AM<2>O<5-x> compound as a catalyst for catalyzing VOC combustion. The general formula AM<2>O<5-x> compound is a mullite-type composite oxide,wherein A is any one metal or more of lanthanide metal elements, Bi and Y, M is one or more of first transition series transition metal elements, and x is between 0 and 1. The general formula AM<2>O<5-x> compound has relatively good catalytic effects on VOC combustion. The AM<2>O<5-x> compound is the mullite-type composite oxide, binding energy between the components is relatively large, and thusstability of the compound for catalytic VOC combustion is relatively high, and a service life of the compound is relatively long. The AM<2>O<5-x> compound does not contain precious metals, and thus the cost is relatively low. At the same time, a preparation method of the compound is relatively mature and simple in the prior art, so that mass production can be carried out for large-scale VOC treatment; and further, after experimental verification, the compound is suitable for VOC treatment in different industries.

Description

Technical field [0001] The present invention relates to the field of VOC processing, in particular to a general type AM 2 O 5-x The application of the compound as a catalyst for catalyzing the combustion of VOC. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compounds), referred to as VOC, usually refers to the general term for harmful volatile organic compounds, generally including hydrocarbons (alkanes, alkenes, alkynes, cyclic hydrocarbons), aromatics, ketones, esters, Alcohols, ethers, aldehydes, acids, amines, nitriles, epoxy compounds, chlorides, etc. [0003] VOC is the formation of fine particulate matter (PM2.5) and ozone (O 3 Compared with the control of particulate matter, sulfur dioxide, and nitrogen oxide pollution, my country’s VOC management foundation is weak and has become a shortcoming of atmospheric environmental management. At present, petrochemical, automotive, electronics, chemical, industrial coating, packaging and printing, oil s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/83B01J23/889F23G7/07B82Y30/00
CPCB01J23/002B01J23/34B01J23/83B01J23/8892B01J35/1014B01J2523/00B82Y30/00F23G7/07F23G2209/14B01J2523/3706B01J2523/3737B01J2523/72B01J2523/845B01J2523/842
Inventor 王卫超万翔张同董安琪
Owner 栗豹
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