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Aluminum hydroxide and kaolin supported Cr-Cu-Mn-O mixed/composite oxide catalyst and application

A cr-cu-mn-o, composite oxide technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, catalyst supports, etc. There are few problems that need to be explored in depth, so as to achieve the effect of good thermal stability test, high catalytic oxidation activity and large specific surface area

Active Publication Date: 2021-01-08
NANJING RONGZHONG ENVIRONMENTAL ENG RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses an oxygen carrier material called Aluminum hydride with copper chromate support that helps create stable complexes containing metal ions like iron atoms. These compositions have excellent properties such as strong acidity, ability to absorb light at different wavelength ranges, and great heat resistance over wide range temperatures. They also provide efficient decomposition of halogenated chemical substances into less harmful gases during combustion processes.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the effectiveness and safety of catalysis reactions involving various types of solvents containing halogen elements like CFCs/HCFOs, particularly those derived from fossil fuel burning processes. These solvatic substances contain heavy atoms called chromophores, making it difficult to remove these residual agents without causing damage during decomposition. To address this issue, there was developed an effective method for removing alkylhalocompound contaminants effectively through decompositiorating chemistry techniques.

Method used

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  • Aluminum hydroxide and kaolin supported Cr-Cu-Mn-O mixed/composite oxide catalyst and application
  • Aluminum hydroxide and kaolin supported Cr-Cu-Mn-O mixed/composite oxide catalyst and application

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Embodiment 1

[0024] This embodiment provides a Cr-Cu-Mn-O mixed / composite oxide catalyst supported by aluminum hydroxide and kaolin, the catalyst uses Cr-Cu-Mn-O mixed / composite oxide as an active component, and hydrogen Alumina and kaolin are used as carriers, which are formed into spherical shapes by mixing, stirring, muddying and extrusion, and then dried and roasted.

[0025] In this embodiment, the composite oxide is copper manganese composite oxide Cu 1.4 mn 1.6 o 4 ; The mixed oxide is chromium trioxide (Cr 2 o 3) and manganese oxide (MnOx) are mixed, and the Cr / Mn molar ratio is 1:1; the mixed / composite oxide is chromium trioxide (Cr 2 o 3 ) and manganese oxide (MnOx) two mixed oxides and copper-manganese composite oxides (Cu 1.4 mn 1.6 o 4 ) mixed.

[0026] The preparation method of the above-mentioned aluminum hydroxide and kaolin-supported Cr-Cu-Mn-O mixed / composite oxide catalyst specifically comprises the following steps:

[0027] Step I: Preparation of Cr-Cu-Mn-O Mi...

Embodiment 2

[0033] This embodiment provides a Cr-Cu-Mn-O mixed / composite oxide catalyst supported by aluminum hydroxide and kaolin, the catalyst uses Cr-Cu-Mn-O mixed / composite oxide as an active component, and hydrogen Alumina and kaolin are used as carriers, which are formed into spherical shapes by mixing, stirring, muddying and extrusion, and then dried and roasted.

[0034] In this embodiment, the composite oxide is copper manganese composite oxide Cu 1.4 mn 1.6 o 4 ; The mixed oxide is chromium trioxide (Cr 2 o 3 ) and manganese oxide (MnOx) are mixed, and the Cr / Mn molar ratio is 1:1; the mixed / composite oxide is chromium trioxide (Cr 2 o 3 ) and manganese oxide (MnOx) two mixed oxides and copper-manganese composite oxides (Cu 1.4 mn 1.6 o 4 ) mixed. The preparation method of the above-mentioned aluminum hydroxide and kaolin-supported Cr-Cu-Mn-O mixed / composite oxide catalyst specifically comprises the following steps:

[0035] Step I: Preparation of Cr-Cu-Mn-O Mixed / Comp...

Embodiment 3

[0040] This embodiment provides a Cr-Cu-Mn-O mixed / composite oxide catalyst supported by aluminum hydroxide and kaolin, the catalyst uses Cr-Cu-Mn-O mixed / composite oxide as an active component, and hydrogen Alumina and kaolin are used as carriers, which are formed into spherical shapes by mixing, stirring, muddying and extrusion, and then dried and roasted.

[0041] In this embodiment, the composite oxide is copper manganese composite oxide Cu 1.4 mn 1.6 o 4 ; The mixed oxide is chromium trioxide (Cr 2 o 3 ) and manganese oxide (MnOx) are mixed, and the Cr / Mn molar ratio is 1:1; the mixed / composite oxide is chromium trioxide (Cr 2 o 3 ) and manganese oxide (MnOx) two mixed oxides and copper-manganese composite oxides (Cu 1.4 mn 1.6 o 4 ) mixed.

[0042] The preparation method of the above-mentioned aluminum hydroxide and kaolin-supported Cr-Cu-Mn-O mixed / composite oxide catalyst specifically comprises the following steps:

[0043] Step I: Preparation of Cr-Cu-Mn-O M...

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Abstract

The invention discloses an aluminum hydroxide and kaolin supported Cr-Cu-Mn-O mixed/composite oxide catalyst and application thereof.The catalyst is prepared by taking a Cr-Cu-Mn-O mixed/composite oxide as an active component and taking aluminum hydroxide and kaolin as carriers through the steps of mixing, stirring, grinding and extruding to form a ball shape, drying and roasting; the catalyst ismainly used for thermal catalytic oxidation of chlorine-containing volatile organic compounds (CVOCs for short), can realize complete catalytic oxidation of CVOCs into CO2, H2O, HCl or Cl2 under medium and low temperature conditions, has no obvious chlorine poisoning phenomenon, and has the characteristics of high catalytic oxidation activity, large specific surface area and good thermal stability.

Description

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Claims

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Application Information

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Owner NANJING RONGZHONG ENVIRONMENTAL ENG RES INST CO LTD