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Cu-based spinel type catalyst for preparing methanol through carbon dioxide hydrogenation as well as preparation method and application thereof

A carbon dioxide, spinel-type technology, used in metal/metal oxide/metal hydroxide catalysts, preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve the problem of low methanol yield, neglect of metal-support interaction role, etc.

Active Publication Date: 2021-11-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these preparation methods usually only focus on the adjustment of the valence state of the active metal, ignoring the interaction between the metal and the support, resulting in a low overall yield of methanol
[0004] Therefore, the existing Cu-based catalysts for carbon dioxide hydrogenation to methanol need to be improved

Method used

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  • Cu-based spinel type catalyst for preparing methanol through carbon dioxide hydrogenation as well as preparation method and application thereof
  • Cu-based spinel type catalyst for preparing methanol through carbon dioxide hydrogenation as well as preparation method and application thereof
  • Cu-based spinel type catalyst for preparing methanol through carbon dioxide hydrogenation as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (1) Add 0.01 mol of copper nitrate hexahydrate and 0.02 mol of aluminum nitrate nonahydrate into 100 ml of deionized water, stir at 30°C for 10 min to dissolve, and prepare a mixed metal solution;

[0066] (2) Add 0.08mol of NaOH solid into 100ml of deionized water, stir at 30°C for 10min to dissolve, and prepare a precipitant solution;

[0067] (3) under continuous stirring in the stirred tank, the precipitant solution is added dropwise to the mixed metal solution to obtain a mixed slurry;

[0068] (4) Put the above slurry in a 300ml hydrothermal kettle, control the hydrothermal temperature to 180° C., and the hydrothermal time to 20 hours to obtain the hydrothermal slurry, and perform solid-liquid separation on the hydrothermal slurry to obtain sediment and waste liquid;

[0069] (5) Dry the fully washed precipitate in an oven (dry at 100°C for 12h), grind it after drying, put the obtained powder in a magnetic boat, and calcinate at a high temperature in a muffle furn...

Embodiment 2

[0075] (1) Add 0.01 mol of copper nitrate hexahydrate and 0.02 mol of aluminum nitrate nonahydrate into 100 ml of deionized water, stir at 30°C for 10 min to dissolve, and prepare a mixed metal solution;

[0076] (2) Add 0.08mol of NaOH solid into 100ml of deionized water, stir at 30°C for 10min to dissolve, and prepare a precipitant solution;

[0077] (3) under continuous stirring in the stirred tank, the precipitant solution is added dropwise to the mixed metal solution to obtain a mixed slurry;

[0078] (4) Put the above slurry in a 300ml hydrothermal kettle, control the hydrothermal temperature to 180° C., and the hydrothermal time to 20 hours to obtain the hydrothermal slurry, and perform solid-liquid separation on the hydrothermal slurry to obtain sediment and waste liquid;

[0079] (5) Dry the fully washed precipitate in an oven (dry at 100°C for 12h), grind it after drying, put the obtained powder in a magnetic boat, and calcinate at a high temperature in a muffle furn...

Embodiment 3

[0085] (1) Add 0.01 mol of copper nitrate hexahydrate and 0.02 mol of aluminum nitrate nonahydrate into 100 ml of deionized water, stir at 30°C for 10 min to dissolve, and prepare a mixed metal solution;

[0086] (2) Add 0.08mol of NaOH solid into 100ml of deionized water, stir at 30°C for 10min to dissolve, and prepare a precipitant solution;

[0087] (3) under continuous stirring in the stirred tank, the precipitant solution is added dropwise to the mixed metal solution to obtain a mixed slurry;

[0088] (4) Put the above slurry in a 300ml hydrothermal kettle, control the hydrothermal temperature to 180° C., and the hydrothermal time to 20 hours to obtain the hydrothermal slurry, and perform solid-liquid separation on the hydrothermal slurry to obtain sediment and waste liquid;

[0089] (5) Dry the fully washed precipitate in an oven (dry at 100°C for 12h), grind it after drying, put the obtained powder in a magnetic boat, and calcinate at a high temperature in a muffle furn...

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Abstract

The invention discloses a Cu-based spinel type catalyst for preparing methanol through carbon dioxide hydrogenation and a preparation method and an application thereof, the method comprises the following steps: reducing a catalyst precursor to obtain the Cu-based spinel type catalyst, and the catalyst precursor is copper aluminate spinel loaded with metal oxide. Therefore, by adopting the method to prepare the Cu-based catalyst for preparing the methanol through hydrogenation of the carbon dioxide, accurate regulation and control of the proportion of Cu<+> in the catalyst can be realized, interaction between catalyst metal and a carrier can be enhanced, and relatively high methanol yield can be realized, so that emission of the carbon dioxide can be effectively reduced, resource utilization of the carbon dioxide can be realized, and the method has relatively high environmental benefits and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide conversion catalysts, and in particular relates to a Cu-based spinel catalyst for hydrogenation of carbon dioxide to methanol, a preparation method and application thereof. Background technique [0002] With the growth of population and the acceleration of industrialization, the increasing carbon dioxide content in the atmosphere has a serious impact on the global climate and environment. Using renewable energy, such as solar energy, wind energy, etc. to produce hydrogen and convert carbon dioxide on a large scale is an effective way to use carbon dioxide that has been widely recognized. On the one hand, it can reduce carbon dioxide emissions, on the other hand, it can use carbon dioxide as a renewable and non-traditional carbon source to produce high value-added chemicals, and get rid of the dependence on traditional fossil energy such as oil and coal. Because methanol has the advantages ...

Claims

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Application Information

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IPC IPC(8): B01J23/80C07C31/04C07C29/153
CPCB01J23/80B01J23/005C07C29/153C07C31/04Y02P20/52
Inventor 颜彬航仉景鹏
Owner TSINGHUA UNIV