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Ceria-Supported Cobalt-Based Catalysts for Autothermal Reforming of Acetic Acid to Hydrogen Production

A ceria, autothermal reforming technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrogen, etc., can solve the problem of catalyst deactivation, easy to be oxidized, poor stability, etc. problems, to achieve the effect of improving the ability to resist carbon deposition, promoting gasification, and improving thermal stability

Active Publication Date: 2020-11-20
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a stable structure, anti-oxidation, and anti-coking catalyst for the problems of low activity, poor stability, and easy oxidation of the existing catalyst in the autothermal reforming reaction of acetic acid, resulting in catalyst deactivation. , new catalyst with stable activity

Method used

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  • Ceria-Supported Cobalt-Based Catalysts for Autothermal Reforming of Acetic Acid to Hydrogen Production
  • Ceria-Supported Cobalt-Based Catalysts for Autothermal Reforming of Acetic Acid to Hydrogen Production
  • Ceria-Supported Cobalt-Based Catalysts for Autothermal Reforming of Acetic Acid to Hydrogen Production

Examples

Experimental program
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Effect test

example 1

[0032] Weigh 9.08g of Ce(NO 3 ) 3 ·6H 2 0 and 6.00g of urea were dissolved by adding 90.3mL and 40.1mL of deionized water respectively, mixed and stirred evenly, added 10.0mL hydrogen peroxide, stirred evenly, put into the reaction kettle, hydrothermally reacted at 240°C for 12h, and cooled to After room temperature, wash three times with deionized water; the washed sample is placed in a 140°C drying oven for 12 hours, and then the temperature is raised at a rate of 10°C / min and roasted at a temperature of 600°C for 4h to obtain CeO 2 Carrier; after weighing 1.40g of Co(NO 3 ) 2 ·6H 2 O, 6.00g of urea, respectively add 90.5mL and 40.3mL of deionized water to dissolve, mix and stir evenly, add 10.0mL hydrogen peroxide, and then add the aforementioned 3.60g of CeO 2 The carrier, stirred evenly, was put into the reaction kettle, hydrothermally reacted at 240°C for 12h, cooled to room temperature, and washed with deionized water three times; the washed samples were dried in a...

Embodiment 1

[0036] Weigh 8.07g of Ce(NO 3 ) 3 ·6H 2 0 and 6.00g of urea were dissolved in 90.5mL and 40.3mL of deionized water respectively, mixed and stirred evenly, and 10.0mL of hydrogen peroxide was added, stirred evenly, put into a reactor, hydrothermally reacted at 240°C for 12h, and cooled to After room temperature, wash three times with deionized water; the washed sample is placed in a 140°C drying oven for 12 hours, and then the temperature is raised at a rate of 10°C / min and roasted at a temperature of 600°C for 4h to obtain CeO 2 carrier; after weighing 2.80g of Co(NO 3 ) 2 ·6H 2O, 6.00g of urea, respectively add 90.0mL and 40.2mL of deionized water to dissolve, mix and stir evenly, add 10.0mL hydrogen peroxide, and then add the aforementioned 3.20g of CeO 2 The carrier, stirred evenly, was put into the reaction kettle, hydrothermally reacted at 240°C for 12h, cooled to room temperature, and washed with deionized water three times; the washed samples were dried in a 140°C ...

Embodiment 2

[0039] Weigh 7.06g of Ce(NO 3 ) 3 ·6H 2 0 and 6.00g of urea were dissolved in 90.1mL and 40.4mL of deionized water respectively, mixed and stirred evenly, and 10.0mL of hydrogen peroxide was added, stirred evenly, put into a reactor, hydrothermally reacted at 240°C for 12h, and cooled to After room temperature, wash three times with deionized water; the washed sample is placed in a 140°C drying oven for 12 hours, and then the temperature is raised at a rate of 10°C / min and roasted at a temperature of 600°C for 4h to obtain CeO 2 carrier; after weighing 4.20g of Co(NO 3 ) 2 ·6H 2 O and 6.00g of urea were dissolved by adding 90.0mL and 40.2mL of deionized water respectively, after mixing and stirring evenly, 10.0mL of hydrogen peroxide was added, and then 2.80g of CeO 2 The carrier, stirred evenly, was put into the reaction kettle, hydrothermally reacted at 240°C for 12h, cooled to room temperature, and washed with deionized water three times; the washed samples were dried ...

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Abstract

The invention relates to a catalyst taking cobalt partially substituted cerium dioxide as an active center, which is used for preparing hydrogen by autothermal reforming of acetic acid. Aiming at theproblem of inactivation of an existing catalyst in an acetic acid autothermal reforming reaction, the invention provides a novel catalyst which is stable in structure, resistant to carbon deposition and resistant to oxidation. The chemical composition of the catalyst of the invention is (CoO1.5) a (CeO2) b, wherein a is 0-14.4 and does not contain 0, and b is 16.2-23.2 and does not contain 23.2. According to the invention, a two-step hydrothermal method is adopted to prepare the micro-spherical mesoporous structural material; a cobalt-partially-substituted CeO2 active center is formed after hydrogen reduction, acetic acid molecules are efficiently converted, adsorption activation on water and oxygen is improved, gasification of a carbon deposition precursor is promoted, generation of a by-product acetone is reduced, and carbon deposition resistance and oxidation resistance of the catalyst are improved.

Description

technical field [0001] The present invention relates to a cobalt-based catalyst for autothermal reforming of acetic acid to produce hydrogen, in particular to the application of a cobalt-based catalyst with cobalt partially substituted ceria as the active center in the process of producing hydrogen from acetic acid autothermal reforming , belongs to the field of producing hydrogen by autothermal reforming of acetic acid. Background technique [0002] Fossil fuels still occupy a relatively large proportion in today's energy structure, and processes such as catalytic cracking of petroleum and coking of coal have brought many environmental problems, such as the greenhouse effect and air pollution; in addition, fossil fuels are non-renewable resources, Overexploitation can lead to the depletion of fossil fuels. In order to solve the above problems, it is necessary to find a clean and renewable energy source. In recent years, hydrogen has attracted the attention of many scienti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83C01B3/32
CPCB01J23/83C01B3/326C01B2203/0244C01B2203/1052
Inventor 黄利宏胡晓敏王巧张羽刘燕
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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