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A yttrium-manganese-nickel-based perovskite catalyst for autothermal reforming of acetic acid for hydrogen production

A perovskite structure, 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, sintering resistance, poor stability and other problems, to achieve the effect of improving catalytic activity, good catalytic activity and stable activity

Active Publication Date: 2022-07-19
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide an anti-coking, anti-sintering and stable activity for the existing catalysts in the autothermal reforming reaction of acetic acid, which have low activity, poor stability and no resistance to sintering, resulting in catalyst deactivation. new catalyst for

Method used

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  • A yttrium-manganese-nickel-based perovskite catalyst for autothermal reforming of acetic acid for hydrogen production
  • A yttrium-manganese-nickel-based perovskite catalyst for autothermal reforming of acetic acid for hydrogen production

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Effect test

example 1

[0028] Weigh 2.348g of Ni (NO 3 ) 2 ·6H 2 O, 1.237g of Y (NO 3 ) 3 ·6H 2 O and 10.982 g of 50 wt% Mn (NO 3 ) 2 The solution was transferred into a beaker containing 50 mL of ethylene glycol monomethyl ether, and stirred until the solid particles were completely dissolved; this solution was transferred into a high-pressure reactor with a polytetrafluoroethylene lining, and was placed in an oven at 200 ° C for 12 After the autoclave was cooled to room temperature, the precipitate was collected by filtration and washed three times with deionized water, and then the precipitate was placed in an oven at 105 °C to dry for 12 hours; the sample was placed in a tube furnace at 10 °C / The heating rate of min was increased to 850 °C, and the catalyst CDUT-NMY-1 was obtained after calcination at this temperature for 4 hours. The catalyst molar composition is (NiO) 1.25 (MnO 2 ) 4.75 (YO 1.5 ) 0.5 , the weight percent composition in terms of oxides is as follows: nickel oxide i...

Embodiment 1

[0032] Weigh 2.326g of Ni (NO 3 ) 2 ·6H 2 O, 3.927g of Y (NO 3 ) 3 ·6H 2 O and 4.477 g of 50 wt% Mn (NO 3 ) 2 , transferred into a beaker containing 50 mL of ethylene glycol monomethyl ether, and stirred until the solid particles were completely dissolved; this solution was transferred into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and placed in an oven at 200 ° C for 12 hours ; After the autoclave was cooled to room temperature, the precipitate was collected by filtration and washed three times with deionized water, and then the precipitate was placed in an oven at 105°C for drying for 12 hours; the sample was placed in a tube furnace at 10°C / min. The heating rate of the catalyst was increased to 850 ° C, and the catalyst CDUT-NMY-2 of the present invention was obtained after calcining at this temperature for 4 hours, which formed Y(Mn,Ni)O of yttrium-nickel perovskite partially substituted by manganese. 3 Perovskite-like structure catalyst...

Embodiment 2

[0035] Weigh 2.328g of Ni (NO 3 ) 2 ·6H 2 O, 2.100g of Y (NO 3 ) 3 ·6H 2 O and 8.909 g of 50 wt% Mn (NO 3 ) 2 , transferred into a beaker containing 50 mL of ethylene glycol monomethyl ether, and stirred until the solid particles were completely dissolved; this solution was transferred into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and placed in an oven at 200 ° C for 12 hours ; After the autoclave was cooled to room temperature, the precipitate was collected by filtration and washed three times with deionized water, and then the precipitate was placed in an oven at 105°C for drying for 12 hours; the sample was placed in a tube furnace at 10°C / min. The heating rate was increased to 850 °C, and after calcination at this temperature for 4 hours, the catalyst CDUT-NMY-3 was obtained, forming a yttrium-nickel-based perovskite catalyst partially substituted by manganese. The catalyst molar composition is (NiO) 0.73 (MnO 2 ) 2.27 (YO 1.5 ) 0....

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Abstract

The invention relates to a yttrium-manganese-nickel perovskite type catalyst for producing hydrogen by autothermal reforming of acetic acid. Aiming at the problem of catalyst deactivation in the autothermal reforming reaction of acetic acid in the existing catalyst, the present invention adopts a hydrothermal method to use Ni as an active component, introduces Y element, and partially replaces Ni by Mn element, forming mesoporous Y (Mn ,Ni)O 3 The perovskite-like structure catalyst improves the dispersion and stability of the active component nickel, and induces the efficient conversion of acetic acid, obtaining a new catalyst with high sintering resistance, coke resistance and high activity. The chemical composition of the catalyst of the present invention is (NiO) a (MnO 2 ) b (YO 1.5 ) c , where a is 0.39, b is 0.61, and c is 0.5.

Description

technical field [0001] The invention relates to a yttrium-manganese-nickel perovskite structure catalyst used for producing hydrogen by autothermal reforming of acetic acid, and belongs to the field of producing hydrogen by autothermal reforming of acetic acid. Background technique [0002] Hydrogen is an important chemical raw material, and has the advantages of high calorific value, no pollution, renewable, and wide range of sources. It is regarded as one of the most potential clean energy sources. At present, hydrogen is mainly obtained from fossil energy such as natural gas and coal through steam reforming, but it is limited by the increasing depletion of fossil energy and environmental pollution. Therefore, resource-rich and renewable biomass has received attention. Biomass is pyrolyzed at high temperature to obtain biomass oil, wherein the water phase components are rich in acetic acid, and the weight ratio can reach 30%, which can be used as a cheap raw material for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889C01B3/32
CPCB01J23/8892C01B3/32
Inventor 黄利宏廖富霞贾玄弈胡晓敏陈慧
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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