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Preparation and application of perovskite catalyst with three-dimensional ordered macroporous structure

A technology with three-dimensional order and pore structure, applied in the direction of physical/chemical process catalysts, structural parts, metal/metal oxide/metal hydroxide catalysts, etc., can solve a large number of cracks or micro-cracks in the 3DOM skeleton and damage the structural integrity , small size and other issues

Inactive Publication Date: 2015-03-11
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during calcination, the 3DOM framework tends to produce a large number of cracks or microcracks due to rapid shrinkage, thereby destroying the integrity of the structure and making the obtained ordered samples small in size, so the control of the calcination process is very important

Method used

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  • Preparation and application of perovskite catalyst with three-dimensional ordered macroporous structure
  • Preparation and application of perovskite catalyst with three-dimensional ordered macroporous structure
  • Preparation and application of perovskite catalyst with three-dimensional ordered macroporous structure

Examples

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Effect test

Embodiment 1

[0020] The colloidal crystal template method is used to prepare polystyrene colloidal crystals. First, measure 10 mL of styrene and place it in a separatory funnel. In order to remove the polymerization inhibitor contained in styrene, use the same volume of NaOH (0.1mol / L) and Wash with distilled water four times until the pH of styrene is neutral. Secondly, inject 100mL of distilled water and washed styrene (St) monomer into a 250mL four-necked round bottom flask equipped with a stirrer, reflux condenser, thermometer and gas tube, and blow nitrogen for 15 minutes to remove oxygen in the system Then, after the temperature was raised to 70°C, 0.004 g of potassium persulfate (KPS) was added as an initiator to initiate the polymerization reaction. After the polymerization reaction was reacted at a constant temperature under the protection of nitrogen for 10 hours, the polystyrene mother liquor was poured out, and the agglomerated objects were filtered to obtain a homogeneous emuls...

Embodiment 2

[0022] The colloidal crystal template method is used to prepare polystyrene colloidal crystals. First, measure 10 mL of styrene and place it in a separatory funnel. In order to remove the polymerization inhibitor contained in styrene, use the same volume of NaOH (0.1mol / L) and Wash with distilled water four times until the pH of styrene is neutral. Secondly, inject 100mL of distilled water and washed styrene (St) monomer into a 250mL four-necked round bottom flask equipped with a stirrer, reflux condenser, thermometer and gas tube, and blow nitrogen for 15 minutes to remove oxygen in the system Then, after the temperature was raised to 70°C, 0.007g of potassium persulfate (KPS) was added as an initiator to initiate the polymerization reaction. After the polymerization reaction was reacted at a constant temperature under the protection of nitrogen for 10 hours, the polystyrene mother liquor was poured out, and the agglomerated objects were filtered to obtain a homogeneous emulsi...

Embodiment 3

[0024] The colloidal crystal template method is used to prepare polystyrene colloidal crystals. First, measure 10 mL of styrene and place it in a separatory funnel. In order to remove the polymerization inhibitor contained in styrene, use the same volume of NaOH (0.1mol / L) and Wash with distilled water four times until the pH of styrene is neutral. Secondly, inject 100mL of distilled water and washed styrene (St) monomer into a 250mL four-necked round bottom flask equipped with a stirrer, reflux condenser, thermometer and gas tube, and blow nitrogen for 15 minutes to remove oxygen in the system Then, after the temperature was raised to 70°C, 0.01 g of potassium persulfate (KPS) was added as an initiator to initiate the polymerization reaction. After the polymerization reaction was reacted at a constant temperature under the protection of nitrogen for 10 hours, the polystyrene mother liquor was poured out, and the agglomerated objects were filtered to obtain a homogeneous emulsi...

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Abstract

The invention relates to a perovskite catalyst with a three-dimensional ordered macroporous structure, in particular to preparation and application of the perovskite catalyst with the three-dimensional ordered macroporous structure. The preparing process comprises the following steps: (1), preparing polystyrene colloidal crystals by a colloidal crystal template process; (2), assembling the colloidal crystals by a centrifugal method; (3), filling a template with a precursor solution prepared from metal ion nitrate by an impregnating method; (4), removing the template by a high-temperature forging method; (5) applying the perovskite catalyst with the three-dimensional ordered macroporous structure to the fields of new energy, such as lithium air batteries, catalysis, environments, chemicals and electronic industry. The operation is simple, and the prepared perovskite catalyst with the three-dimensional ordered macroporous structure has great catalytic activity. When the perovskite catalyst with the three-dimensional ordered macroporous structure is applied to the lithium air batteries, the electrochemical properties of the batteries can be obviously improved, and high catalytic activity is reflected.

Description

(1) Technical field [0001] The invention relates to a three-dimensional ordered macroporous structure perovskite catalyst, in particular to the preparation and application of a three-dimensional ordered macroporous structure perovskite catalyst. (2) Background technology [0002] Three-dimensional ordered macroporous (3DOM) materials have unique structural and functional properties and have always been a research hotspot in the field of materials. They can be used as catalysts, photonic crystals, functional carriers, adsorption materials and electrode materials, etc., in catalysis, environmental, chemical and electronic Industry and other fields have very broad application prospects. When preparing the 3DOM material by the colloidal crystal template method, the assembly quality of the colloidal crystal determines the quality of the 3DOM material. The quality of colloidal crystals depends on the monodispersity of polystyrene microspheres. The preparation methods of polystyrene (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/10H01M4/90H01M12/08
CPCY02E60/10
Inventor 宋世栋许钦红杨浩李文斌郭鹏飞
Owner TIANJIN POLYTECHNIC UNIV
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