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P2O5-like structural material as well as preparation method and application thereof

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

Active Publication Date: 2021-01-12
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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  • P2O5-like structural material as well as preparation method and application thereof
  • P2O5-like structural material as well as preparation method and application thereof
  • P2O5-like structural material as well as preparation method and application thereof

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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 P2O5-like structural material as well as a preparation method and application thereof. The preparation method of the P2O5-like structural material comprises the following step: with guanidine phosphate and polyvinylpyrrolidone as precursors, subjecting gas generated by pyrolysis of polyvinylpyrrolidone to reacting with guanidine phosphate at a high temperature to obtain the P2O5-like structural material. The P2O5-like structural material prepared by the invention is applied as a novel nitrogen and phosphorus (NP) material to the industry of production of hydrogen peroxide through electrochemical selective oxygen reduction for the first time; according to results of detection via a rotating ring disc electrode and H-shaped electrolytic cell equipment, the P2O5-likestructural material has good selectivity and yield in the production of hydrogen peroxide by electrocatalysis; and thus, the further application of the P2O5-like structural material to industrializedelectrocatalytic hydrogen peroxide preparation is facilitated.

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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IPC IPC(8): C01B25/12B01J27/16C25B1/28
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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