Vanadium-titanium compound material with high thermal stability and high activity and preparation method thereof

Patent metadata

Field	Value
Publication number	US-9856149-B2
Application number	US-201214427613-A
Country	US
Kind code	B2
Filing date	Sep 29, 2012
Priority date	Sep 29, 2012
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

It discloses a vanadium-titanium compound material with high thermal stability and high activity and a preparation method thereof. The vanadium-titanium compound material is mainly composed of vanadium oxide and titanium oxide, where the content of vanadium oxide is 0.5% to 30% by mass of the vanadium-titanium compound material, and the crystal form of titanium oxide in the vanadium-titanium compound material is one of anatase and TiO 2 (B) or a mixture thereof.

First claim

What is claimed is:

1. A method for preparing a vanadium-titanium compound material, comprising:
adding titanium oxide containing the crystal form TiO 2 (B) to a vanadium-containing precursor solution, fully stirring, standing still for 6 to 8 h, drying, and then roasting at 300° C. to 700° C.; wherein
the vanadium-containing precursor solution is prepared from a vanadium-containing precursor, the vanadium-containing precursor including metavanadate, vanadyl sulfate or vanadyl oxalate.

2. The method for preparing a vanadium-titanium compound material according to claim 1 , wherein a content of the crystal form TiO 2 (B) in the titanium oxide containing the crystal form TiO 2 (B) is 1% to 100%.

3. The method for preparing a vanadium-titanium compound material according to claim 2 , wherein the content of the crystal form TiO 2 (B) in the titanium oxide having the crystal form TiO 2 (B) is 5% to 100%.

4. The method for preparing a vanadium-titanium compound material according to claim 1 , wherein the titanium oxide containing the crystal form TiO 2 (B) has a specific surface area of 10 to 300 m 2 /g, a pore volume of 0.02 to 1.0 cm 3 /g, and an average pore size of 1.0 to 50 nm.

5. The method for preparing a vanadium-titanium compound material according to claim 1 , wherein
the vanadium-containing precursor solution is prepared by mixing the vanadium-containing precursor with water or an organic alcohol.

6. The method for preparing a vanadium-titanium compound material according to claim 5 , wherein the organic alcohol is ethanol.

7. The method for preparing a vanadium-titanium compound material according to claim 1 , wherein a concentration of the vanadium-containing precursor in the vanadium-containing precursor solution is 1 to 6 mol/L.

8. The method for preparing a vanadium-titanium compound material according to claim 1 , wherein a liquid-solid ratio of the vanadium-containing precursor solution to the titanium oxide containing the crystal form TiO 2 (B) is 0.5 to 1.0 mL/g.

9. A method for preparing a vanadium-titanium compound material, comprising:
preparing a vanadium-containing precursor solution by mixing a vanadium-containing precursor and a solvent, wherein
the vanadium-containing precursor is metavanadate, vanadyl sulfate or vanadyl oxalate, and
the solvent is water or an organic alcohol;

adding titanium oxide containing the crystal form TiO 2 (B) to the vanadium-containing precursor solution;
stirring the vanadium-containing precursor solution to which the titanium oxide containing the crystal form TiO 2 (B) has been added to form a mixture;
allowing the mixture to stand for 6to 8h and then drying the mixture to form a dried mixture; and
calcinating the dried mixture at 300° C. to 700° C. to obtain the vanadium-titanium compound material.

10. The method for preparing a vanadium-titanium compound material according to claim 9 , wherein a content of the crystal form TiO 2 (B) in the titanium oxide containing the crystal form TiO 2 (B) is 1% to 100%.

11. The method for preparing a vanadium-titanium compound material according to claim 10 , wherein the content of the crystal form TiO 2 (B) in the titanium oxide having the crystal form TiO 2 (B) is 5% to 100%.

12. The method for preparing a vanadium-titanium compound material according to claim 9 , wherein the titanium oxide containing the crystal form TiO 2 (B) has a specific surface area of 10to 300 m 2 /g, a pore volume of 0.02 to 1.0 cm 3 /g, and an average pore size of 1.0 to 50 nm.

13. The method for preparing a vanadium-titanium compound material according to claim 9 , wherein the organic alcohol is ethanol.

14. The method for preparing a vanadium-titanium compound material according to claim 9 , wherein a concentration of the vanadium-containing precursor in the vanadium-containing precursor solution is 1 to 6 mol/L.

15. The method for preparing a vanadium-titanium compound material according to claim 9 , wherein a liquid-solid ratio of the vanadium-containing precursor solution to the titanium oxide containing the crystal form TiO 2 (B) is 0.5 to 1.0 mL/g.

Assignees

• Nanjing Tech Univ (Cn)
• Changshu Yutyrone Advanced Wear Materials Tech Co Ltd (Cn)
• Nanjing University Of Technology
• Changshu Yutyrone Advanced Wear Materials Tech Co Ltd

Inventors

• Yang Zhuhong
• Li Licheng
• Lu Xiaohua
• Yao Wenjun
• Ji Tuo
• Li Zheng
• Liu Chang

Classifications

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J23/22

  Vanadium · CPC title

• B01J35/1042

  Operations & Transport · mapped topic