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Preparation method for Cu-Zn-Zr mesoporous catalyst

A cu-zn-zr, catalyst technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., to achieve the effects of high specific surface area, narrow pore size distribution, and high catalytic activity

Active Publication Date: 2014-08-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, domestic research on this aspect is rare, therefore, finding a suitable and stable synthetic method is the key

Method used

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  • Preparation method for Cu-Zn-Zr mesoporous catalyst
  • Preparation method for Cu-Zn-Zr mesoporous catalyst
  • Preparation method for Cu-Zn-Zr mesoporous catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of this Cu-Zn-Zr mesoporous catalyst, its concrete steps are as follows:

[0025] (1) Firstly, 12.8g of copper salt, zinc salt, and zirconium salt were dissolved in the solvent according to the mass ratio of 12.8:15.8:5.1 and mixed evenly to obtain a mixed salt solution, wherein the total metal ion concentration in the mixed salt solution was 0.1069mol / L ( The molar ratio of copper:zinc:zirconium is 0.45:0.45:0.1), the copper salt, zinc salt, and zirconium salt are copper nitrate, zinc nitrate, and zirconium nitrate that can be dissolved in absolute ethanol, and the solvent is absolute ethanol;

[0026] (2) Add the mesoporous template agent SBA-15 powder into the mixed salt solution prepared in step (1) according to the solid-to-liquid ratio of 1:15, and stir at room temperature for 2.5 hours to obtain the catalyst mixed salt solution;

[0027] (3) Evaporate all the solvent from the catalyst mixed salt solution obtained in step (2) at 80°C to obta...

Embodiment 2

[0037] The preparation method of this Cu-Zn-Zr mesoporous catalyst, its concrete steps are as follows:

[0038] (1) Firstly, 12.8g of copper salt, zinc salt, and zirconium salt were dissolved in the solvent according to the mass ratio of 12.8:15.8:5.1 and mixed evenly to obtain a mixed salt solution, wherein the total metal ion concentration in the mixed salt solution was 0.1069mol / L ( The molar ratio of copper:zinc:zirconium is 0.45:0.45:0.1), the copper salt, zinc salt, and zirconium salt are copper nitrate, zinc nitrate, and zirconium nitrate that can be dissolved in absolute ethanol, and the solvent is absolute ethanol;

[0039] (2) Add the mesoporous template agent SBA-15 powder into the mixed salt solution prepared in step (1) according to the solid-to-liquid ratio of 1:10, and stir at room temperature for 1 hour to obtain the catalyst mixed salt solution;

[0040] (3) Evaporate all the solvent from the catalyst mixed salt solution obtained in step (2) at 60°C to obtain ...

Embodiment 3

[0050] The preparation method of this Cu-Zn-Zr mesoporous catalyst, its concrete steps are as follows:

[0051] (1) Firstly, 38.5g of copper salt, zinc salt and zirconium salt were dissolved in the solvent according to the mass ratio of 38.5:47.4:15.2 and mixed evenly to obtain a mixed salt solution, wherein the total metal ion concentration in the mixed salt solution was 0.5203mol / L;

[0052] (2) Add the mesoporous template agent SBA-15 powder into the mixed salt solution prepared in step (1) according to the solid-to-liquid ratio of 1:30, and stir at room temperature for 1 hour to obtain the catalyst mixed salt solution, copper salt, zinc Salt and zirconium salt are copper nitrate, zinc nitrate, and zirconium nitrate that can be dissolved in absolute ethanol, and the solvent is absolute alcohol;

[0053] (3) Evaporate all the solvent from the catalyst mixed salt solution obtained in step (2) at 60°C to obtain the catalyst mixed salt;

[0054] (4) Add the mixed salt solution...

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Abstract

The invention relates to a preparation method for a Cu-Zn-Zr mesoporous catalyst, which belongs to the technical field of catalyst preparation. The method comprises the following steps: uniformly mixing a copper salt, a zinc salt and a zircon salt so as to obtain a mixed salt solution; adding powder of a mesoporous template SBA-15 into the mixed salt solution prepared in the previous step so as to obtain a catalyst mixed salt solution; evaporating all the solvents in the catalyst mixed salt solution prepared in the previous step so as to obtain a catalyst mixed salt and repeating dipping twice to three times according to the above-mentioned steps so as to obtain a final dipped catalyst mixed salt; and roasting the final dipped catalyst mixed salt so as to obtain a roasting product and washing and drying the roasting product so as to obtain the Cu-Zn-Zr mesoporous catalyst. The Cu-Zn-Zr mesoporous catalyst prepared by using the method has a high specific surface area, narrow pore size distribution and uniform pore channels and shows high catalytic activity during synthesis of methanol through carbon dioxide hydrogenation at low temperature.

Description

technical field [0001] The invention relates to a preparation method of a Cu-Zn-Zr mesoporous catalyst, which belongs to the technical field of catalyst preparation. Background technique [0002] Due to the advantages of mesoporous materials such as high specific surface area, large pore volume, and regular channels, scholars have conducted extensive research on them. For example, Song Xiaolan et al. (public number CN1837053A) synthesized mesoporous CeO by chemical precipitation. 2 , with larger specific surface area and more uniform particle distribution. As a mature mesoporous material, SBA-15 has the characteristics of high specific surface area, large pore volume, and uniform pore channels. It has potential application value in the fields of chemical adsorption, industrial catalysis, enzyme immobilization, and sensors. focus on. [0003] Cu-Zn-Zr catalyst is a potential catalyst for carbon dioxide hydrogenation to methanol, but the catalyst prepared by traditional co-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C31/04C07C29/154
CPCY02P20/52
Inventor 王华纳薇李志雄高文桂
Owner KUNMING UNIV OF SCI & TECH
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