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Cuo-ceo2 catalyst for water gas shift reaction and preparation method thereof

A technology for transformation reactions and catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Effect, high activity, heat resistance enhancement effect

Inactive Publication Date: 2016-05-04
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research on copper-based hyperstable catalysts began in the 1980s, and is still in the laboratory research stage, with no reports of industrial applications

Method used

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  • Cuo-ceo2 catalyst for water gas shift reaction and preparation method thereof
  • Cuo-ceo2 catalyst for water gas shift reaction and preparation method thereof
  • Cuo-ceo2 catalyst for water gas shift reaction and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A CuO-CeO for water gas shift reaction 2 The preparation method of catalyst, comprises the steps:

[0025] 1) Weigh Ce(NO 3 ) 3 ·6H 2 O43.422g, add 200mL deionized water to dissolve, and make Ce 3+ Salt solution; KOH16.833g was weighed and made into 600mL alkali solution; under mechanical stirring, the Ce 3+ Salt solution and alkali solution were added dropwise to 80°C deionized water at the same time until the pH value of the solution was 10. After mixing and reacting, it was aged for 6 hours, cooled and centrifuged to obtain a precipitate, which was washed 8 times to remove impurity ions, and then in CeO was obtained by drying at 120°C for 12 hours 2 carrier;

[0026] 2) Weigh Cu(NO 3 ) 2 ·3H 2 O0.635g was dissolved in 26.3mL deionized water to make Cu 2+ Salt solution; measure 0.4ml of 25wt% ammonia water and dissolve it in 10ml of deionized water to make an ammonia solution; at room temperature, add the ammonia solution dropwise to Cu 2+ In salt solution,...

Embodiment 2

[0030] A CuO-CeO for water gas shift reaction 2 The preparation method of catalyst, comprises the steps:

[0031] 1) Weigh Ce(NO 3 ) 3 ·6H 2 O43.422g, add 200mL deionized water to dissolve, and make Ce3+ Salt solution; KOH16.833g was weighed and made into 600mL alkali solution; under mechanical stirring, the Ce 3+ Salt solution and alkali solution were added dropwise to 80°C deionized water at the same time until the pH value of the solution was 10. After mixing and reacting, it was aged for 6 hours, cooled and centrifuged to obtain a precipitate, which was washed 8 times to remove impurity ions, and then in CeO was obtained by drying at 120°C for 12 hours 2 carrier;

[0032] 2) Weigh Cu(NO 3 ) 2 ·3H 2 O1.005g was dissolved in 41.6mL deionized water to make Cu 2+ Salt solution; measure 1.3ml of 25wt% ammonia water and dissolve it in 6.3ml of deionized water to make an ammonia solution; at room temperature, add the ammonia solution dropwise to Cu 2+ In salt solution, ...

Embodiment 3

[0036] A CuO-CeO for water gas shift reaction 2 The preparation method of catalyst, comprises the steps:

[0037] 1) Weigh Ce(NO 3 ) 3 ·6H 2 O43.422g, add 200mL deionized water to dissolve, and make Ce 3+ Salt solution; KOH16.833g was weighed and made into 600mL alkali solution; under mechanical stirring, the Ce 3+ Salt solution and alkali solution were added dropwise to 80°C deionized water at the same time until the pH value of the solution was 10. After mixing and reacting, it was aged for 6 hours, cooled and centrifuged to obtain a precipitate, which was washed 8 times to remove impurity ions, and then in CeO was obtained by drying at 120°C for 12 hours 2 carrier;

[0038] 2) Weigh Cu(NO 3 ) 2 ·3H 2 O1.599g was dissolved in 66.1mL deionized water to make Cu 2+ Salt solution; Measure 3ml of 25wt% ammonia water and dissolve it in 4.5ml of deionized water to make an ammonia solution; at room temperature, add the ammonia solution dropwise to Cu 2+ In salt solution, ...

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Abstract

The invention discloses a CuO-CeO2 catalyst for a water gas conversion reaction and a preparation method thereof. The preparation method of the CuO-CeO2 catalyst for the water gas conversion reaction comprises the following steps: mixing cerium salt solution and an alkali solution by adopting a complex deposition precipitation method; performing aging, cooling, centrifuging, washing and drying to obtain CeO2 carriers; dispersing the carriers in copper ammonia complex solution; adding the alkali solution into the copper ammonia complex solution for reaction; performing aging, cooling, centrifuging, washing, drying and roasting to obtain the CuO-CeO2 catalyst. Compared with the CuO-CeO2 catalyst prepared by adopting a deposition precipitation method commonly, CuO is deposited by adopting a mode of complexing Cu<2+> into [Cu(NH3)4]<2+>, so that the active ingredient CuO microcrystals are highly dispersed, the CuO-CeO2 catalyst has high activity on the water-gas conversion reaction and has a wide temperature application range, and is applicable to the water gas conversion reaction which takes low-sulfur raw materials, such as natural gas and light oil, as raw materials in a hydrogen production process.

Description

technical field [0001] The invention belongs to the field of water-gas shift technology and catalyst technology, in particular to a CuO-CeO used for water-gas shift reaction 2 Catalyst and method for its preparation. Background technique [0002] Hydrogen energy has a wide range of sources and is clean and environmentally friendly. It is an extremely superior secondary energy source and has attracted widespread attention from all over the world. At present, the methods available for large-scale hydrogen production in the world are mainly hydrogen production from electrolysis of water and hydrogen production from fossil energy. Hydrogen production by electrolysis of water consumes a lot of energy, and the cost of hydrogen production is relatively high; fossil energy hydrogen production mainly adopts coal gasification and natural gas reforming processes, and the gasification and reforming products often contain a certain concentration of CO, which can be further processed thr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83C01B3/16
CPCY02P20/52
Inventor 陈崇启林性贻詹瑛瑛郑起
Owner FUZHOU UNIV
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