Preparation method of prism copper oxide-zinc oxide catalyst

A zinc oxide, prismatic technology, which is applied in the field of preparation of prismatic copper oxide-zinc oxide catalysts, can solve the problem of no specific shape, and achieve the effects of good thermal stability, regular product shape, and low activation temperature

Inactive Publication Date: 2019-02-22
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional oxide supports are generally polycrystalline, without specific morphology, and there is no selective exposure of crystal planes

Method used

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  • Preparation method of prism copper oxide-zinc oxide catalyst
  • Preparation method of prism copper oxide-zinc oxide catalyst
  • Preparation method of prism copper oxide-zinc oxide catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Mainly exposing the polar {001} crystal plane zinc oxide carrier, the preparation method of the prismatic copper oxide-zinc oxide catalyst of the present invention comprises the following steps:

[0027] 1) Dissolve 3g of zinc acetate dihydrate in 12ml of absolute ethanol while stirring to obtain mixed solution A, and simultaneously dissolve 1.9g of hexamethylenetetramine in deionized water to obtain mixed solution B, then mix The mixed solution A is added to the mixed solution B, and after stirring, 0.5 g of polyvinylpyrrolidone K30 is added, and the mixture is uniformly stirred to obtain a mixed solution C. The volumes of absolute ethanol and deionized water are the same;

[0028] 2) After ultrasonic treatment for 0.5h, the mixed solution C was transferred to a reaction kettle with a polytetrafluoroethylene liner for heating reaction, wherein the temperature of the heating reaction was 50°C to 150°C, the heating reaction time was 12h, and then cooled After reaching ro...

Embodiment 2

[0031] Mainly expose the preparation of non-polar {100} crystal plane zinc oxide carrier, the preparation method of prismatic copper oxide-zinc oxide catalyst according to the present invention comprises the following steps:

[0032] 1) Dissolve 3g of zinc acetate dihydrate in 120ml of absolute ethanol while stirring to obtain mixed solution A, and simultaneously dissolve 1.9g of hexamethylenetetramine in deionized water to obtain mixed solution B, then mix The mixed solution A is added to the mixed solution B, and after stirring, 5 g of polyvinylpyrrolidone K30 is added, and the mixture is uniformly stirred to obtain a mixed solution C. The volume of absolute ethanol and deionized water is the same;

[0033] 2) After ultrasonic treatment for 0.5h, the mixed solution C was transferred to a reaction kettle with a polytetrafluoroethylene liner for heating reaction, wherein the temperature of the heating reaction was 90°C, and the heating reaction time was 12h, and then cooled to ...

Embodiment 3

[0038] The preparation method of the prismatic copper oxide-zinc oxide catalyst of the present invention comprises the following steps:

[0039] 1) Dissolve 2.0g of zinc acetate dihydrate in 5ml of absolute ethanol while stirring to obtain mixed solution A, and simultaneously dissolve 1.0g of hexamethylenetetramine in deionized water to obtain mixed solution B, and then Add mixed solution A to mixed solution B, add 0.1 g of polyvinylpyrrolidone K30 after stirring, and stir evenly to obtain mixed solution C, the volumes of absolute ethanol and deionized water are the same;

[0040] 2) After ultrasonic treatment for 0.5h, the mixed solution C was transferred to a reaction kettle with a polytetrafluoroethylene liner for heating reaction, wherein the temperature of the heating reaction was 50°C, the heating reaction time was 6h, and then cooled to room temperature. Carry out centrifugal separation, and then alternately wash with deionized water and anhydrous ethanol until the wash...

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Abstract

The invention discloses a preparation method of a prism copper oxide-zinc oxide catalyst. The preparation method of the prism copper oxide-zinc oxide catalyst comprises the following steps of dissolving zinc acetate dehydrate into absolute ethyl alcohol, then uniformly mixing the dissolved zinc acetate dehydrate with hexamethylenetetramine aqueous solution, then adding in polyethylpyrrolidone K-30, performing ultrasonic treatment for hydrothermal reaction to prepare prism zinc oxide carrier powder; adding the prism zinc oxide carrier powder into deionized water for ultrasonic dispersion, thendropwise stirring in copper nitrate solution and PH buffer solution with the pH kept to be 8.0-9.0, then ageing the mixture at room temperature, performing centrifugal separation and washing the mixture to be neutral, and drying and calcining the mixture to obtain the prism copper oxide-zinc oxide catalyst. The prepared prism copper oxide-zinc oxide catalyst has selectively exposed crystal surfaces and has the advantages of being orderly in morphology, good in product dispersion and high in redox activity, thereby significantly improving the hydrogen production performance during water-gas shift.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and relates to a preparation method of a prismatic copper oxide-zinc oxide catalyst. Background technique [0002] With the depletion of fossil energy (especially oil) and the increasing environmental pollution, the development and utilization of clean energy has become an urgent problem for mankind. Hydrogen has long been regarded as an ideal clean energy source due to its high energy density and only water after combustion. However, due to the existence of technical bottlenecks in hydrogen production, storage and utilization, hydrogen energy has not been applied on a large scale so far, and its proportion in the entire energy system is still very low. With the development of technologies related to hydrogen energy utilization in recent years, especially the breakthrough of hydrogen fuel cell technology, hydrogen energy will play an increasingly important role in the energy system. [0003]...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J37/03B01J37/08C01B3/16
CPCB01J23/002B01J23/80B01J37/031B01J37/082C01B3/16C01B2203/0283Y02P20/52
Inventor 任志博张畅俞旸闫巍余智勇
Owner HUANENG CLEAN ENERGY RES INST
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