Hierarchical porous ZrO2 material, method of preparing the same, and application thereof

Patent metadata

Field	Value
Publication number	US-11299400-B2
Application number	US-202016826032-A
Country	US
Kind code	B2
Filing date	Mar 20, 2020
Priority date	Apr 15, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A method for preparing a hierarchical porous ZrO 2 includes the following steps: S 1 , dissolving a triblock copolymer in an organic solvent to obtain a solution A, dissolving a tannin extract in distilled water to obtain a solution B, mixing the solution A and the solution B and stirring to obtain a mixed solution; S 2 , adding a zirconium salt to the mixed solution obtained in step S 1 and stirring; S 3 , heating the mixed solution obtained in step S 2 in an oven to obtain ZrO 2 , promoting the conversion of the crystal form of ZrO 2 ; S 4 , calcining ZrO 2 at a high temperature to obtain the hierarchical porous ZrO 2 .

First claim

What is claimed is:

1. A method for preparing a hierarchical porous ZrO 2 comprising the following steps:
S 1 , dissolving a triblock copolymer in an organic solvent to obtain a solution A, dissolving a tannin extract in distilled water to obtain a solution B, mixing the solution A and the solution B and stirring to obtain a mixed solution;
S 2 , adding a zirconium salt to the mixed solution obtained in step S 1 and stirring;
S 3 , heating the mixed solution obtained in step S 2 in an oven to obtain ZrO 2 , promoting the conversion of the crystal form of ZrO 2 ; and
S 4 , calcining ZrO 2 at a high temperature to obtain the hierarchical porous ZrO 2 .

2. The method of claim 1 , wherein the triblock copolymer is Pluronic P123, Pluronic F127 or Pluronic F108.

3. The method of claim 1 , wherein the tannin extract is a sulfonated Acacia mangim tannin extract.

4. The method of claim 1 , wherein the zirconium salt is zirconium chloride, zirconium sulfate, zirconium nitrate, zirconium phosphate, or zirconium oxalate.

5. The method of claim 1 , wherein the organic solvent is methanol, ethanol, ethylene glycol, or glycerin.

6. The method of claim 1 , wherein a molar ratio of the triblock copolymer:the tannin extract:the zirconium salt is 0.015-0.05:0.01-0.05:0.1-1.0.

7. The method of claim 1 , wherein in step S 2 , the mixed solution is stirred for 3-6 hours; in step 3 , the mixed solution is heated at 40° C. for 24-96 hours; and in step S 4 , ZrO 2 is calcined at 200-250° C. for 60-120 minutes and then at 550-700° C. for 240-360 minutes.

Assignees

• Qiang Taotao
• Tian Lei
• Zhu Runtong
• Chen Lu
• Univ Shaanxi Science & Tech

Inventors

• Qiang Taotao
• Tian Lei
• Zhu Runtong
• Chen Lu

Classifications

• C01P2006/16

  Pore diameter · CPC title

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01G25/02 Primary

  Oxides · CPC title

• C01P2004/03

  obtained by SEM · CPC title