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Iron-based perovskite mixed conductor oxygen permeation membrane material for hydrogen production by thermochemical decomposition of water and preparation method thereof

A mixed conductor and perovskite technology, applied in the field of ceramic manufacturing, can solve problems such as poor stability, corrosion of oxygen permeable film, and difficulty in long-term operation

Active Publication Date: 2021-04-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the presence of water vapor, reducing gas, carbon dioxide and other atmospheres, the ceramic-based mixed conductor oxygen-permeable membrane will be severely corroded, and its stability is poor, making it difficult to operate for a long time. The oxygen permeability is more critical than the oxygen permeability, so improving the stability of the oxygen permeable membrane is very important and becomes a technical problem to be solved urgently.

Method used

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  • Iron-based perovskite mixed conductor oxygen permeation membrane material for hydrogen production by thermochemical decomposition of water and preparation method thereof
  • Iron-based perovskite mixed conductor oxygen permeation membrane material for hydrogen production by thermochemical decomposition of water and preparation method thereof
  • Iron-based perovskite mixed conductor oxygen permeation membrane material for hydrogen production by thermochemical decomposition of water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]In the present embodiment, the thermochemical decomposing of the iron-based calcium ore mixed conductor oxygenated membrane material with the following composition:

[0030]PR0.6SR0.4Feo3-Δ .

[0031]In the present embodiment, thermochemical decomposing the preparation method of ferriths titanium hydrogen mixing conductor oxygenate material, including the following steps:

[0032]23.36g Pr (NO3)3· 6h2O, 7.58G SR (NO3)2, 36.16g Fe (NO3)3· 9h2O dissolve in deionized water; 52.36 g of ethylenediamine tetracetic acid and 56.43 g of citric acid dissolved in another beaker equipped with deionized water, mix the above two solutions, stirred, and regulate the solution by dripping ammonia water. The pH was 8, continued to 80 ° C and stir until the sol was obtained. The resulting sol was dried at 150 ° C until it was taken out after the sponge porous solid was taken out, and after 10 hours at 350 ° C, the obtained soil brown powder was ground after 5 hours at 950 ° C for 5 hours, that is, the PR...

Embodiment 2

[0037]This embodiment is substantially the same as the examples, in particular

[0038]In the present embodiment, the thermochemical decomposing of the iron-based calcium ore mixed conductor oxygenated membrane material with the following composition:

[0039]PR0.6SR0.4FE0.9W0.1O3-Δ .

[0040]In the present embodiment, thermochemical decomposing the preparation method of ferriths titanium hydrogen mixing conductor oxygenate material, including the following steps:

[0041]22.10g Pr (NO3)3· 6h2O, 7.17G SR (NO3)2, 30.78g Fe (NO3)3· 9h2O Dissolve in deionized water, 1.96GWO3The mixture dissolved in ammonia was dissolved in ammonia, and the mixed solution of metal ions was mixed; 49.48 g of ethylenediamine tetracetic acid and 53.37 g of citric acid were dissolved in another beaker equipped with deionized water, and the above two solutions were mixed. Heating and stirring, the pH of the solution was 80 ° C and stirred until it was allowed to be heated to 80 ° C and stirred until the sol was allowed ...

Embodiment 3

[0046]This embodiment is substantially the same as the foregoing embodiment, in particular

[0047]In the present embodiment, the thermochemical decomposing of the iron-based calcium ore mixed conductor oxygenated membrane material with the following composition:

[0048]PR0.6SR0.4FE0.9V0.1O3-Δ .

[0049]In the present embodiment, thermochemical decomposing the preparation method of ferriths titanium hydrogen mixing conductor oxygenate material, including the following steps:

[0050]23.41g Pr (NO3)3· 6h2O, 7.59g SR (NO3)232.62G Fe (NO3)3· 9h2O Dissolve in deionized water, 1.63GV2O5The mixture dissolved in ammonia is mixed in ammonia and mixed with metal ions; the mixture of 52.43 g of ethylenediamine tetracetic acid and 56.55 g of citric acid were dissolved in another beaker equipped with deionized water, and the above two solutions were mixed. The mixture was heated, and the pH of the solution was 80 ° C and stirred until it was heated to 80 ° C and stirred until it was added to 80 ° C. The r...

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Abstract

The invention relates to an iron-based perovskite mixed conductor oxygen permeation membrane material for hydrogen production by thermochemical decomposition of water and a preparation method thereof, and belongs to the technical field of energy preparation and ceramic manufacturing. The preparation method comprises the following steps of: preparing Pr<0.6>Sr<0.4>Fe<1-x>M<x>O<3-delta> powder by adopting a sol-gel method, carrying out grinding, pressing and molding to obtain a green body, and roasting the green body at 1250-1400 DEG C for 6-10 hours to obtain the iron-based perovskite mixed conductor oxygen permeation membrane. The membrane prepared by the method is compact in structure, free of impurity phase generation and good in mechanical strength. The Pr<0.6>Sr<0.4>Fe<0.9>M<0.1>O<3-delta> mixed conductor oxygen permeation membrane obtains the hydrogen production rate of 0.27 mL.cm<-2>.min<-1> under the conditions of 900 DEG C, 30vol.% CO-He purge gas with the flow rate of 100mL min<-1> and 80vol.% H2O-N2 water vapor with the flow rate of 100mL min<-1>, can keep the hydrogen production rate stable within 50 hours during working, and is an oxygen permeable membrane material with an application potential.

Description

Technical field[0001]The present invention relates to a thermochemical decomposition water hydrogen-hydrogen-based mixed conductor oxygenated membrane material and a preparation method thereof, a generic preparation technique, and a ceramic manufacturing technology.Background technique[0002]Large mining and combustion of fossil fuels such as oil and coal, causing serious environmental pollution and energy shortages; how to relieve fossil fuel reserves increasingly depleted the environmental pollution caused by a large number of combustions These two crises are urgently needed. The energy consumption structure mainly based on fossil energy has obvious unsustainable development, so it is imminent that searching for cleaning and efficient renewable alternative energy is imminent. Hydrogen can be used as low carbon energy is a world-recognized clean energy, which is the ideal raw material and energy carrier; it has high combustion values, no pollution, rich raw material source, high uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622
CPCC04B35/2641C04B35/622C04B2235/3224C04B2235/3213C04B2235/3241C04B2235/3244C04B2235/3239C04B2235/3258Y02E60/36
Inventor 程红伟刘岩博徐小芳孙强超鲁雄刚
Owner SHANGHAI UNIV
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