Recyclable and reconstructable perovskite type Ni-based composite oxide catalyst and preparation method thereof

A composite oxide, perovskite-type technology, used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can achieve the effects of broad industrial application prospects and commercial value, low hydrogen production activity temperature, and strong application universality.

Pending Publication Date: 2022-07-12
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to alleviate energy shortages and eradicate environmental pollution, and to meet the major needs of national green hydrogen energy development and waste organic matter treatment. It is difficult to recycle waste existing in existing reforming hydrogen production catalysts, and its universality is not strong. Problems such as carbon deposit deactivation and preparation method complexity, have proposed a kind of recyclable perovskite type Ni-based catalyst, another object of the present invention is to provide the preparation method of above-mentioned catalyst, and another object of the present invention is to provide above-mentioned catalyst Application in hydrogen production by reforming oxygen-containing organic compounds, which can convert volatile organic compounds (VOCs), and gasification products such as coal, biomass, and organic waste into clean and pollution-free hydrogen through catalytic reforming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) LaNiO 3 Preparation of Active Component Precursor Solutions

[0025] According to the Ni / La molar ratio of 1 / 1, weigh 3.5521g Ni (NO 3 ) 2 ·6H 2 O and 5.2893gLa (NO 3 ) 3 ·6H 2 O is placed in a beaker, an appropriate amount of deionized water is added and mixed uniformly at the same time until the solid is completely dissolved, that is, LaNiO is prepared 3 Active ingredient precursor solution.

[0026] (2) LaNiO 3 Preparation of / NaCl catalyst

[0027] According to the (La+Ni) / citric acid molar ratio of 1 / 1.5, 7.7007g of citric acid monohydrate was weighed to prepare a citric acid solution. The molar ratio was 1 / 1.5, 2.137 ml of ethanol was added dropwise, and then the composite sol was prepared by uniform stirring under the condition of a constant temperature water bath at 80°C. Weigh 20g of NaCl powder, put it into the prepared composite sol, stir at room temperature to mix the two evenly, then transfer it to an oven at 80 °C for 4 hours, and then put it...

Embodiment 2

[0031] (1) CaNiO 3 Preparation of Active Component Precursor Solutions

[0032] According to the Ni / Ca molar ratio of 1 / 1, weigh 3.9626g Ni(NO 3 ) 2 ·6H 2 O and 2.4008gC 4 H 6 CaO 4 ·H 2 O placed in a beaker, add an appropriate amount of deionized water, anhydrous ethanol and citric acid, and at the same time evenly mix until the solid is completely dissolved, that is, to prepare CaNiO 3 Active ingredient precursor solution.

[0033] (2)CaNiO 3 Preparation of / NaCl catalyst

[0034] According to the (Ca+Ni) / citric acid molar ratio of 1 / 1.5, 8.5907g of citric acid monohydrate was weighed to prepare a citric acid solution. The molar ratio was 1 / 1.5, 2.383 ml of ethanol was added dropwise, and then the composite sol was prepared by uniform stirring under the condition of a constant temperature water bath at 90°C. Weigh 20g of NaCl powder, put it into the prepared composite sol, stir at room temperature to mix the two evenly, then transfer it to an oven at 80°C for 8 ho...

Embodiment 3

[0038] (1) BaNiO 3 Preparation of Active Component Precursor Solutions

[0039] According to the Ni / Ba molar ratio of 1 / 1, weigh 0.0238g Ni(NO 3 ) 2 ·6H 2 O and 0.02g BaCl 2 ·2H 2 O placed in a beaker, add appropriate amount of deionized water and acetic acid and mix uniformly at the same time until the solid is completely dissolved, that is, BaNiO is prepared 3 Active ingredient precursor solution.

[0040] (2) BaNiO 3 Preparation of / NaCl catalyst

[0041] According to the (Ba+Ni) / citric acid molar ratio of 1 / 1.5, 0.0517g of citric acid monohydrate was weighed to prepare a citric acid solution. The molar ratio is 1 / 1.5, 0.014 ml of ethanol is added dropwise, and then under the condition of a constant temperature water bath at 80° C., the composite sol is prepared by uniform stirring. Weigh 20 g of NaCl powder, put it into the prepared composite sol, stir at room temperature to make the two evenly mixed, and then transfer it to an oven at 80 °C for 4 hours. Then, it...

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PUM

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Abstract

The invention relates to a recyclable perovskite type Ni-based composite oxide catalyst and a preparation method thereof.The catalyst takes perovskite type composite oxide ANIO3 with Ni as a B site as a catalytic active component, and the catalyst is easy to dissolve in water and resistant to high temperature (the melting point gt; a halogen metal salt MX at the temperature of 750 DEG C is used as a carrier; by taking the mass of the MX carrier as a reference, the mass loading amount of the ANiO3 active component is the mass loading amount of the ANiO3 active component, and the preparation method is a dipping blending firing method, so that the process is simple. The catalyst is suitable for hydrogen production through reforming of volatile organic compounds (VOCs) and hydrogen production through secondary reforming of gasified products such as coal, biomass and other waste organic matters. Compared with the existing reforming hydrogen production catalyst, the catalyst disclosed by the invention not only breaks through the technical bottleneck that high-quality activity is difficult to obtain due to low specific surface area, but also has the advantages of high hydrogen production selectivity, low reaction temperature, low cost, recyclability and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to a recyclable perovskite-type Ni-based catalyst for hydrogen production by reforming oxygen-containing organic matter and a preparation method thereof, belonging to the fields of new energy catalysis materials, energy chemical industry, catalyst engineering and special inorganic non-metallic materials. Background technique [0002] The contradiction between energy shortage and growing demand has become increasingly prominent, and coal-based consumption not only produces a large amount of CO 2 , and also caused serious environmental pollution and climate change. Driven by the global strategy of reducing pollution and carbon emissions, hydrogen energy development has become a major demand in the field of national energy and environment. At present, the coal gasification technology is mature, which not only realizes the green use of coal, but also provides a new path for the clean utilization of waste organic matter. my country is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/128B01J27/138B01J37/02B01J37/08B01J38/68C01B3/32
CPCB01J27/128B01J27/138B01J37/0201B01J37/0209B01J37/088B01J38/68C01B3/326C01B2203/0244C01B2203/1058C01B2203/1082Y02P20/584
Inventor 韩禹辰沈岳松何唯一丁妍
Owner NANJING UNIV OF TECH
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