a kind of p 2 o 5 Structural materials and their preparation methods and applications

A P2O5, structural material technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., to achieve the effects of good catalytic activity, good selectivity and yield

Active Publication Date: 2021-12-14
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] well known P 2 o 5 It cannot be applied to electrochemistry because of its strong hygroscopicity, but its structure can be imitated, so it is explored to have P 2 o 5 Structured NP materials made possible

Method used

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  • a kind of p <sub>2</sub> o <sub>5</sub> Structural materials and their preparation methods and applications
  • a kind of p <sub>2</sub> o <sub>5</sub> Structural materials and their preparation methods and applications
  • a kind of p <sub>2</sub> o <sub>5</sub> Structural materials and their preparation methods and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: A kind of P-like for electrocatalytic production of hydrogen peroxide 2 o 5 Material (P 2 (N X o 5-X )-500) Preparation method:

[0036] Accurately weigh 1.0 g of guanidine phosphate and 1.0 g of polyvinylpyrrolidone raw materials, grind them thoroughly and place them in two crucibles. Two crucibles with precursors were placed in the tube furnace, and the crucible containing the polyvinylpyrrolidone precursor was placed upstream of the crucible containing the guanidine phosphate precursor. In access N 2 Atmosphere with 2 o C / min heating rate from room temperature to 500 o After C, calcine at constant temperature for 3 hours, then cool naturally to room temperature, take out the product in the guanidine phosphate crucible, and grind to obtain P-like 2 o 5 material of construction, denoted as P 2 (N X o 5-X )-500. the P 2 (N X o 5-X SEM images of )-500 material at 5μm and 2μm Figure 1a shown.

Embodiment 2

[0037] Embodiment 2: A kind of P-like for electrocatalytic production of hydrogen peroxide 2 o 5 Material (P 2 (N X o 5-X )-600) Preparation method:

[0038] Accurately weigh 1.0 g of guanidine phosphate and 1.0 g of polyvinylpyrrolidone raw materials, grind them thoroughly and place them in two crucibles. Two crucibles with precursors were placed in the tube furnace, and the crucible containing the polyvinylpyrrolidone precursor was placed upstream of the crucible containing the guanidine phosphate precursor. In access N 2 Atmosphere with 2 o C / min heating rate from room temperature to 600 o After C, calcine at constant temperature for 3 hours, then cool naturally to room temperature, take out the product in the guanidine phosphate crucible, and grind to obtain P-like 2 o 5 material of construction, denoted as P 2 (N X o 5-X )-600. the P 2 (N X o 5-X SEM images of )-600 material at 5μm and 2μm Figure 1b shown.

Embodiment 3

[0039] Embodiment 3: A kind of P-like for electrocatalytic production of hydrogen peroxide 2 o 5 Material (P 2 (N X o 5-X )-700) Preparation method:

[0040] Accurately weigh 1.0 g of guanidine phosphate and 1.0 g of polyvinylpyrrolidone raw materials, grind them thoroughly and place them in two crucibles. Two crucibles with precursors were placed in the tube furnace, and the crucible containing the polyvinylpyrrolidone precursor was placed upstream of the crucible containing the guanidine phosphate precursor. In access N 2 Atmosphere with 2 o C / min heating rate from room temperature to 700 o After C, calcine at constant temperature for 3 hours, then cool naturally to room temperature, take out the product in the guanidine phosphate crucible, and grind to obtain P-like 2 o 5 material of construction, denoted as P 2 (N X o 5-X )-700. the P 2 (N X o 5-X SEM images of )-700 material at 5μm and 2μm Figure 1c shown.

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Abstract

The invention discloses a class P 2 o 5 Structural materials and methods for their preparation and use, the class P 2 o 5 The preparation method of the structural material is as follows: using guanidine phosphate and polyvinylpyrrolidone as precursors, the gas generated by pyrolysis of polyvinylpyrrolidone reacts with guanidine phosphate at high temperature to obtain the P-like 2 o 5 Structural materials. Class P prepared by the present invention 2 o 5 Structural material, as a new nitrogen-phosphorus (NP) material, was first used in the electrochemical selective oxygen reduction industry to produce hydrogen peroxide, and it was found that it has a good The selectivity and yield are beneficial to the application of further industrialized electrocatalytic production of hydrogen peroxide.

Description

technical field [0001] The invention belongs to the technical field of material preparation and application, and specifically relates to a kind of P 2 o 5 Structural materials and their preparation methods and applications. Background technique [0002] Hydrogen peroxide (hydrogen peroxide) is an important chemical substance, which is widely used in the fields of industry, medicine, environmental protection, military industry, food and environment. It is both oxidizing and reducing and has no secondary pollution after use, which is defined as a green chemical product. At present, the most mature method for industrial large-scale production of hydrogen peroxide is the anthraquinone method, but the anthraquinone method is not only cumbersome, but also uses some organic solvents, causing secondary pollution to the environment. Therefore, we are looking for a green and efficient method to produce hydrogen peroxide. imminent. [0003] In the electrochemical oxygen reduction r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/12B01J27/16C25B1/30C25B11/052C25B11/065C25B11/077
CPCC01B25/12B01J27/16C25B1/28C01P2004/03C01P2004/61
Inventor 王建国包志康张世杰丁磊
Owner ZHEJIANG UNIV OF TECH
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