Catalyst material and process for the production thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/00
B01J-021/06
B01D-053/86
B01J-023/22
B01J-023/30
B01J-035/02
B01J-035/10
B01J-037/10
B01J-035/00
출원번호
US-0805370
(2011-06-25)
등록번호
US-9566565
(2017-02-14)
우선권정보
DE-10 2010 030 684 (2010-06-29)
국제출원번호
PCT/DE2011/075149
(2011-06-25)
§371/§102 date
20130122
(20130122)
국제공개번호
WO2012/022328
(2012-02-23)
발명자
/ 주소
Grothe, Sonja
Rohe, Bernd
Ebbinghaus, Peter
Gosch, Elke
출원인 / 주소
Sachtleben Chemie GmbH
대리인 / 주소
Cahn & Samuels, LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록
A TiO2-based catalyst material in particle form having a content of metal removes pollutants, in particular of nitrogen oxides from combustion gases.
대표청구항▼
1. A catalyst material comprising: TiO2 in particle form having a content of metal oxide of vanadium oxide, tungsten oxide, and/or precursors thereof,wherein the average particle size D50 after dispersing is D50 less than 1.0 μm, the mesopore size is 3-50 nm and the mesopore volume of the particles
1. A catalyst material comprising: TiO2 in particle form having a content of metal oxide of vanadium oxide, tungsten oxide, and/or precursors thereof,wherein the average particle size D50 after dispersing is D50 less than 1.0 μm, the mesopore size is 3-50 nm and the mesopore volume of the particles is greater than 0.260 cm3/g, andwherein the B90/10 value is in a range of 0.78-0.94 μm. 2. The catalyst material based on TiO2 as claimed in claim 1 having a content of metal oxide and/or precursors thereof in an amount of less than 30% by weight based on the total amount of titanium dioxide and metal oxide used. 3. The catalyst material based on TiO2 as claimed in claim 1 having a content of vanadium oxide, tungsten oxide, and/or precursors thereof in an amount of from 8 to 15% by weight of the total amount of titanium dioxide and vanadium oxide or tungsten oxide used. 4. A process for producing the catalyst material as claimed in claim 1, wherein an aqueous suspension having a content of titanium oxide hydrate TiO(OH)2 is initially charged, the suspension is brought to a pH in the range from 3 to 8 and,after a ripening time, is subjected to a hydrothermal treatment, the suspension obtained is washed and filtered and the particulate material filtered off is dried, with a soluble compound of vanadium or tungsten being added to the suspension during the course of the process. 5. The process as claimed in claim 4, wherein the addition of the soluble compound of the metal is carried out before the hydrothermal treatment. 6. The process as claimed in claim 5, wherein the addition of the soluble compound of the metal is carried out after adjustment of the pH to the range 3-8 and before the hydrothermal treatment. 7. The process as claimed in claim 4, wherein a vanadium compound or tungsten compound is added as metal. 8. The process as claimed in claim 4, wherein the suspension is brought to a pH in the range from 3 to 8 by ammonia. 9. A process as claimed in claim 4, wherein the aqueous suspension having a content of 200 to 400 g of TiO2/l is initially charged and brought to a pH in the range from 3 to 8. 10. The process as claimed in claim 7, wherein a vanadium compound or tungsten compound in the form of a vanadate or tungstate is added as metal. 11. The process as claimed in claim 7, ammonium metatungstate is added as metal. 12. An offgas catalyst comprising a catalyst material as claimed in claim 1. 13. A photocatalyst comprising a catalyst material as claimed in claim 1. 14. A method of removing pollutants comprising contacting a catalyst material as claimed in claim 1 with an offgas, thereby removing nitrogen oxides. 15. A catalyst material according to claim 1, wherein the average particle size D50 after dispersing is less than 0.8 μm. 16. A catalyst material comprising: TiO2 in particle form having a content of metal oxide of vanadium oxide, tungsten oxide, and/or precursors thereof,wherein the average particle size D50 after dispersing is D50 less than 1.0 μm, the mesopore size is 3-50 nm and the mesopore volume of the particles is greater than 0.260 cm3/g, said catalyst material having a bimodal mesopore distribution having a first maximum in a range from 8 to 12 nm and a second maximum in a range from 15 to 20 nm. 17. A catalyst material according to claim 1, comprising: TiO2;15-45 wt % of the metal oxide selected from the group consisting of vanadium oxide, tungsten oxide, and combinations thereof, based on the total weight of TiO2 and metal oxide,wherein said catalyst has a surface area of 100-300 m2/g. 18. A catalyst material according to claim 1, comprising: TiO2;30-45 wt % of the metal oxide selected from the group consisting of vanadium oxide, tungsten oxide, and combinations thereof, based on the total weight of TiO2 and metal oxide, andwherein said catalyst has a surface area of 200-300 m2/g. 19. The catalyst material based on TiO2 as claimed in claim 16 having a content of metal oxide and/or precursors thereof in an amount of less than 30% by weight based on the total amount of titanium dioxide and metal oxide used. 20. The catalyst material based on TiO2 as claimed in claim 16 having a content of vanadium oxide, tungsten oxide, and/or precursors thereof-in an amount of from 8 to 15% by weight of the total amount of titanium dioxide and vanadium oxide or tungsten oxide used. 21. An offgas catalyst comprising a catalyst material as claimed in claim 16. 22. A photocatalyst comprising a catalyst material as claimed in claim 16.
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이 특허에 인용된 특허 (6)
Hegedus Louis (Rockville MD) Beeckman Jean W. (Columbia MD) Pan Wie-Hin (Columbia MD) Solar Jeffrey P. (Silver Spring MD), Catalysts for selective catalytic reduction DeNOx technology.
Pyung Sam Ji KR; Hee Mun Eum KR; Jung Bin Lee KR; Dong Hwa Kim KR; In Young Lee KR; In Sik Nam KR; Sung Won Ham KR; Soo Tae Choo KR, V2O5-based catalyst for removing NOx from flue gas and preparing method therefor.
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