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Preparation method for rod-like CuO-ZnO composite oxide catalyst

A composite oxide and catalyst technology, applied in the preparation of organic compounds, preparation of hydroxyl compounds, physical/chemical process catalysts, etc., to achieve the effect of simple operation, good catalytic effect, and simple equipment

Inactive Publication Date: 2015-05-13
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the morphology control of copper-zinc composite oxides

Method used

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  • Preparation method for rod-like CuO-ZnO composite oxide catalyst
  • Preparation method for rod-like CuO-ZnO composite oxide catalyst
  • Preparation method for rod-like CuO-ZnO composite oxide catalyst

Examples

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Embodiment 1

[0026] A method for preparing a rod-shaped CuO-ZnO composite oxide catalyst, that is, using glycine as a chelating agent to first synthesize a copper-zinc composite glycine chelate crystal, and then roasting the crystal to obtain a copper-zinc composite oxide catalyst. The preparation process specifically includes the following steps :

[0027] (1), solution preparation

[0028] Take by weighing 5.00g copper acetate, 0.56g zinc acetate joins in 80ml deionized water, obtain the mixed aqueous solution of copper acetate, zinc acetate, copper in the mixed aqueous solution of copper acetate, zinc acetate: the mol ratio of zinc is 9:1;

[0029] Weigh 2.30g glycine and dissolve it in 10ml deionized water to obtain a glycine aqueous solution with a concentration of 3mol / L;

[0030] Weighing 5.56g of polyethylene glycol with a molecular weight of 200 was dissolved in 10ml of water to obtain an aqueous solution of polyethylene glycol with a mass percent concentration of 35.7%;

[0031...

Embodiment 2

[0036] A method for preparing a rod-shaped CuO-ZnO composite oxide catalyst, that is, using glycine as a chelating agent to first synthesize a copper-zinc composite glycine chelate crystal, and then roasting the crystal to obtain a copper-zinc composite oxide catalyst. The preparation process specifically includes the following steps :

[0037] (1), solution preparation

[0038] Take by weighing 5.00g copper acetate, 0.72g zinc acetate joins in 80ml deionized water, obtain the mixed aqueous solution of copper acetate, zinc acetate, copper in the mixed aqueous solution of copper acetate, zinc acetate: the mol ratio of zinc is 7:1;

[0039] Weigh 2.36g glycine and dissolve in 10ml deionized water to obtain a glycine aqueous solution with a concentration of 3.1mol / L;

[0040] Weighing 5.72g of polyethylene glycol with a molecular weight of 4000 was dissolved in 10ml of water to obtain an aqueous solution of polyethylene glycol with a molecular weight of 36.3% at a molecular weig...

Embodiment 3

[0047] A method for preparing a rod-shaped CuO-ZnO composite oxide catalyst, that is, using glycine as a chelating agent to first synthesize a copper-zinc composite glycine chelate crystal, and then roasting the crystal to obtain a copper-zinc composite oxide catalyst. The preparation process specifically includes the following steps :

[0048] (1), solution preparation

[0049] Take by weighing 5.00g copper acetate, 1.00g zinc acetate joins in 80ml deionized water, obtain the mixed aqueous solution of copper acetate, zinc acetate, copper in the mixed aqueous solution of copper acetate, zinc acetate: the mol ratio of zinc is 5:1;

[0050] Weigh 2.48g glycine and dissolve it in 10ml deionized water to obtain a glycine aqueous solution with a concentration of 3.3mol / L;

[0051] Weighing 6.00g of polyethylene glycol with a molecular weight of 10,000 was dissolved in 10ml of water to obtain an aqueous solution of polyethylene glycol with a molecular weight of 37.5% at a molecular...

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Abstract

The invention discloses a preparation method for a rod-like CuO-ZnO composite oxide catalyst. The method comprises the following steps: adding a glycine aqueous solution and a polyethylene glycol aqueous solution into a mixed aqueous solution of copper acetate and zinc acetate, wherein the additive amount of the glycine aqueous solution is ensured that the ratio of molar weight of glycine to total molar weight of copper acetate and zinc acetate is 1 to 1, and the additive amount of the polyethylene glycol aqueous solution is ensured that the ratio of mass of polyethylene glycol to total mass of copper acetate and zinc acetate is 1 to 1; putting an obtained mixed solution into a thermostat water bath at a temperature of 80-90 DEG C for 20-30 minutes, taking out, standing at a room temperature for 1-2 days, controlling the vacuum degree to be 0.08-0.098 MPa for vacuum suction filtration, drying obtained crystals at a controlled temperature of 40-50 DEG C for 12 hours, and calcining at a controlled temperature of 400 DEG C for 240 minutes to obtain the rod-like CuO-ZnO composite oxide catalyst with a good catalytic effect. Instruments and equipment used in the preparation method are simple, and the preparation method is simple to operate and easy for large-scale production.

Description

technical field [0001] The invention relates to a preparation method of a rod-shaped CuO-ZnO composite oxide catalyst. More specifically, it relates to a method for synthesizing copper-zinc composite glycine chelate crystals with glycine as a chelating agent, followed by drying and roasting to prepare CuO-ZnO composite oxide catalyst. Background technique [0002] CO 2 It is a greenhouse gas and an important carbon resource. CO 2 Hydrogenation of methanol to CO 2 One of the most effective ways to utilize it. CO 2 Hydrogenation of methanol mainly uses copper-based catalysts. Literature (Liao F, Huang Y, Ge J, et al. Morphology-Dependent Interactions of ZnO with Cu Nanoparticles at the Materials’ Interface in Selective Hydrogenation of CO 2 to CH 3 OH [J]. Angewandte Chemie International Edition, 2011, 50(9): 2162-2165.) reported that the morphology of CuO-ZnO catalyst is closely related to the catalytic performance, but the preparation process of the catalyst only co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J35/02C07C31/04C07C29/154B01J35/00
CPCY02P20/52
Inventor 钟成林郭晓明毛东森李亮王嵩卢冠忠
Owner SHANGHAI INST OF TECH
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