A strontium zirconium perovskite-type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid

A cobalt-based catalyst, 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, to promote migration, reduce The amount of carbon deposition and the effect of improving alkalinity

Active Publication Date: 2022-07-01
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a structurally stable, sintering-resistant, anti- New catalyst with carbon deposition and stable activity

Method used

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  • A strontium zirconium perovskite-type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid
  • A strontium zirconium perovskite-type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid

Examples

Experimental program
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Effect test

example 1

[0025] Weigh 3.667 g of zirconium n-propoxide, put it into a beaker containing 1.3 mL of triethanolamine, and stir and mix at room temperature for 24 h to form a stable zirconium-triethanolamine complex; under continuous stirring, 1.792 g of hexahydrate Cobalt nitrate and 5.7 mL of 1,3-propanediol were added to the above-mentioned complex, and stirred at room temperature for 90 min to obtain a mixed solution; this solution was transferred to a polytetrafluoroethylene-lined autoclave, and placed in a 140° C. In the oven for 72h; after the autoclave was cooled to room temperature, the precipitate was collected by filtration and washed with deionized water until neutral, and then the precipitate was placed in an oven at 105°C to dry for 12h; the sample was placed in a tube furnace for 10 The heating rate of ℃ / min was increased to 700 ℃, and the catalyst CDUT-ZC was obtained after calcination at this temperature for 4 h. The catalyst had a molar composition of oxides (ZrO 2 ) 1.8...

Embodiment 1

[0029] Weigh 3.667g of zirconium n-propoxide, put it into a beaker containing 1.3mL of triethanolamine, and stir and mix at room temperature for 24h to form a stable zirconium-triethanolamine complex; under continuous stirring, 2.974g of Sr (OH) 2 ·8H 2 O, 1.792g of cobalt nitrate hexahydrate and 5.7mL of 1,3-propanediol were added to the above-mentioned complex, and stirred at room temperature for 90min to obtain a mixed solution; this solution was transferred to a polytetrafluoroethylene-lined autoclave , and placed in an oven at 140°C for 72h; after the autoclave was cooled to room temperature, the precipitate was collected by filtration and washed with deionized water until neutral, and then the precipitate was placed in an oven at 105°C to dry for 12h; the sample was placed in In a tube furnace, the heating rate was raised to 700 °C at a heating rate of 10 °C / min, and after calcination at this temperature for 4 h, a CDUT-SZC catalyst was obtained, that is, a Co-containin...

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Abstract

The invention relates to a strontium zirconium perovskite type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid and a preparation method. Aiming at the problem of deactivation of the existing catalyst in the autothermal reforming process of acetic acid, the invention adopts a hydrothermal method to prepare a cobalt-based catalyst supported by strontium zirconium perovskite, and the formed active center Sr-Zr-Co-O can effectively It can effectively adsorb and activate reactants such as acetic acid, water and oxygen, inhibit the migration, aggregation and oxidation of the active component cobalt that may occur under high temperature conditions, and improve the hydrogen yield during the autothermal reforming of acetic acid. The molar composition of the catalyst of the present invention expressed as oxide is: (SrO) a (ZrO 2 ) b (CoO 1.5 ) c , where a is 0.7‑1.2, b is 0.95‑1.3, and c is 0.54‑0.56.

Description

technical field [0001] The invention relates to a strontium zirconium perovskite type cobalt-based catalyst for producing hydrogen by autothermal reforming of acetic acid and a preparation method thereof, and belongs to the field of producing hydrogen by autothermal reforming of acetic acid. Background technique [0002] Facing the increasing global energy demand, hydrogen, as a clean energy carrier, has great potential in replacing traditional energy. The traditional way of hydrogen production is to convert natural gas, coal and other fossil resources, which brings a lot of carbon dioxide emissions. Biomass is widely distributed and renewable, and is regarded as a promising hydrogen production raw material. Biomass oil obtained by pyrolysis of biomass is a complex mixture, which can be divided into organic phase and aqueous phase, and acetic acid is the main component of the aqueous phase of biomass oil, and the content can reach 33%, so acetic acid can be derived from bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78B01J35/10C01B3/32
CPCB01J23/78B01J35/1009B01J35/1038B01J35/1061C01B3/326C01B2203/0233C01B2203/0227
Inventor 黄利宏黄佳刘燕宋玉鑫廖富霞
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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