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Ferrite oxygen storage material and its precursor and application

An oxygen storage material and ferrite technology, applied in the chemical industry, can solve the problems of complex preparation process and low activity of oxygen storage materials, and achieve the effects of simple preparation process, efficient and clean transformation, and improved transformation efficiency

Active Publication Date: 2020-11-20
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a ferrite oxygen storage material and its precursor and application, which are used to solve the problems of relatively low activity and complicated preparation process of oxygen storage materials in the prior art. question

Method used

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  • Ferrite oxygen storage material and its precursor and application
  • Ferrite oxygen storage material and its precursor and application
  • Ferrite oxygen storage material and its precursor and application

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The invention provides a Ni-based ferrite oxygen storage material, the chemical composition of the oxygen storage material is FexO / NiyO, 2 / 3≦y / x≦9, and the oxygen storage material is applied to two-step heating Chemical cycle breaks down CO 2 Make CO.

[0047] As an example, in this embodiment, FexO / NiyO is prepared by mortar and mortar mixing, y / x=7 / 3.

[0048] First, weigh 0.35mol nickel oxide (NiO), 0.075mol iron oxide (Fe 2 o 3 ) in a mortar and grind for 10 minutes to obtain the product. At the same time, X-ray diffraction is carried out to obtain its diffraction pattern.

[0049] Investigation of Oxygen Storage Materials for CO Decomposition Using a High Temperature Tube Furnace 2 The performance of producing CO, the experimental conditions are: the amount of oxygen storage material precursor is 0.5g, the temperature is raised from room temperature to 800°C at 20°C / min under 100mL / min argon atmosphere, and the temperature is kept at a constant temperature for...

Embodiment 2

[0055] This embodiment provides a Ni-based ferrite-based oxygen storage material precursor and a Ni-based ferrite loaded on a high-temperature carrier ZrO in the prior art. 2 Oxygen storage materials on the surface, and the two oxygen storage materials are applied to decompose CO in a two-step thermochemical cycle 2 Make CO.

[0056] As an example, the precursor of the Ni-based ferrite oxygen storage material in this embodiment is repeated as in Embodiment 1, except that y / x=4.

[0057] As a comparison, the Ni-based ferrite in this example is loaded on the high-temperature carrier ZrO 2 The oxygen storage material on the surface is prepared by co-precipitation method.

[0058] First, weigh the corresponding mass of nitrate ((Ni(NO 3 ) 2 ·6H 2 O,Fe(NO 3 ) 3 9H 2 O and Zr(NO 3 ) 4 ·5H 2 0), the nitrate is dissolved in deionized water to obtain the mixed salt solution with ion concentration of 2.5mol / L, and the KOH solution of 1mol / L is added to the mixed salt solution...

Embodiment 3

[0063] The invention provides a Co-based ferrite oxygen storage material precursor, the chemical composition of the oxygen storage material is Fe x O / Co y O, 2 / 3≦y / x≦9, this oxygen storage material is applied to decompose CO in a two-step thermochemical cycle 2 Make CO.

[0064] As an example, the present embodiment utilizes ball milling method to prepare Fe x O / Co y O, y / x=1.

[0065] First, weigh 0.2 mol of cobaltous oxide (CoO), 0.1 mol of iron oxide (Fe 2 o 3 ) is placed in a ball mill, and the product is obtained by ball milling at 800 R / min for 30 minutes.

[0066] Investigation of Oxygen Storage Materials for CO Decomposition Using a High Temperature Tube Furnace 2 The performance of CO production, the experimental conditions are: the amount of oxygen storage material is about 0.5g, in the atmosphere of 100mL / min argon, the temperature is raised from room temperature to 1400°C at 20°C / min, the temperature is kept constant for 30min, and then the temperature is co...

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Abstract

The invention provides a ferrate type oxygen storage material, and a precursor and a purpose thereof. The precursor of the ferrate type oxygen storage material comprises FexO / MyO, wherein Fe in the FexO is provided by the following one or several kinds of substances: FeO, Fe2O3 and Fe3O4; M in the MyO is provided by the following one or several kinds of substances: NiO, Ni2O3, CoO, Co2O3, Co3O4, MgO, MnO, MnO2, Mn2O3 and Mn3O4; the ratio of y to x is greater than or equal to 2 / 3 but smaller than or equal to 9. The precursor of the ferrate type oxygen storage material is subjected to heat treatment, and the ferrate type oxygen storage material can be obtained. The precursor of the ferrate type oxygen storage material or the ferrate type oxygen storage material can be used for catalyzing thetwo-step heat chemical circulation reaction; the catalyst efficiency is high; the operation is simple.

Description

technical field [0001] The invention relates to a ferrite oxygen storage material, its precursor and application, belonging to the field of chemical industry. Background technique [0002] For a long time, the exploitation and use of fossil fuels, mainly coal, oil and natural gas, have greatly promoted social development, but also produced a series of environmental pollution problems such as the greenhouse effect, making the search for new, clean and reliable sustainable energy It has become a political and economic issue in countries all over the world. Solar energy is the energy produced by the continuous nuclear fusion reaction process inside the sun, and the annual radiation is as high as 5.7×10 22 J, equivalent to 1.9×10 12 tons of standard coal. The use of solar energy to convert energy has attracted widespread attention due to its advantages of low cost, wide sources, and no environmental pollution. Vigorously developing and utilizing solar energy will change my co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J23/755B01J23/78B01J23/889C01B3/04C01B13/02C01B32/40
CPCB01J23/002B01J23/75B01J23/755B01J23/78B01J23/8892B01J2523/00C01B3/042C01B13/0207B01J2523/72B01J2523/847B01J2523/845B01J2523/22Y02E60/36
Inventor 黄金成孙予罕张军付彧
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI