Catalyst composition for selective catalytic reduction of exhaust gases
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/00
B01J-021/00
B01J-020/00
출원번호
US-0002900
(2010-04-16)
등록번호
US-8465713
(2013-06-18)
우선권정보
AT-A 626/2009 (2009-04-23)
국제출원번호
PCT/AT2010/000116
(2010-04-16)
§371/§102 date
20110211
(20110211)
국제공개번호
WO2010/121280
(2010-10-28)
발명자
/ 주소
Schermanz, Karl
Sagar, Amod
Trovarelli, Alessandro
Casanova, Marzia
출원인 / 주소
Treibacher Industrie AG
대리인 / 주소
Workman Nydegger
인용정보
피인용 횟수 :
3인용 특허 :
16
초록
A catalyst composition represented by the general formula XVO4/S wherein XVO4 stands for TransitionMetal-Vanadate, or a mixed TransitionMetal-/RareEarth-Vanadate, and S is a support comprising TiO2.
대표청구항▼
1. A catalyst composition comprising: XVO4/SwhereinXVO4 stands for: (a) a an Fe-Vanadate, optionally in mixture with other Transition Metal Vanadates, or(b) a mixed Fe-/Rare Earth-Vanadate, optionally in mixture with one or more other Transition Metal Vanadates; andS is a support comprising TiO2. 2.
1. A catalyst composition comprising: XVO4/SwhereinXVO4 stands for: (a) a an Fe-Vanadate, optionally in mixture with other Transition Metal Vanadates, or(b) a mixed Fe-/Rare Earth-Vanadate, optionally in mixture with one or more other Transition Metal Vanadates; andS is a support comprising TiO2. 2. The catalyst composition according to claim 1, wherein the other Transition Metal is selected from the group consisting of Mn, Cu, Zn, Zr, Nb, Mo, Ta, W, and combinations thereof. 3. The catalyst composition according to claim 2, wherein the other Transition Metal is selected from the group consisting of Mn, Cu, Zr, and combinations thereof. 4. The catalyst composition according to claim 1, wherein XVO4 stands for (a) an Fe-Vanadate, or(b) a mixed Fe-/Rare Earth-Vanadate. 5. The catalyst composition according to claim 1, wherein said support contains TiO2 in an amount of at least 55 wt.-%, WO3 in an amount of 1-20 wt.-%, and optionally SiO2 in an amount of up to 20 wt.-%, said catalyst composition containing XVO4 in an amount between 0.2% by weight and 25% by weight. 6. The catalyst composition according to claim 1, wherein the Rare Earth is Er. 7. The catalyst composition according to claim 1, wherein the Rare Earth is selected from the group consisting of Sm, Gd and Y. 8. The catalyst composition according to claim 1, wherein S contains SiO2 in an amount of 4-15 wt.-%. 9. The catalyst composition according to claim 1, wherein the vanadate is selected from the group consisting of Fe0.5Er0.5VO4, Fe0.8Er0.2VO4, Fe0.75Er0.25 VO4, Fe0.65Er0.35VO4, Fe0.8Gd0.2VO4, Fe0.5Gd0.5VO4, Fe0.3Sm0.7VO4, Fe0.2Er0.8VO4, Fe0.5Er0.25Gd0.25VO4 and combinations thereof. 10. The catalyst composition according to claim 9, wherein the support S contains TiO2 in an amount of at least 55 wt.-%, WO3 in an amount of 1-20 wt.-%, and optionally SiO2 in an amount of up to 20 wt.-%, said catalyst composition containing XVO4 in an amount between 0.2% by weight and 25% by weight. 11. A process for the preparation of a catalyst composition according to claim 1, comprising: a) suspending a support material containing TiO2 and XVO4 in water forming an intimate mixture comprising said support material and said XVO4,b) evaporating excess water,c) drying the mixture, andd) calcining the dried mixture under air at a temperature between 500 and 850° C. 12. The process according to claim 11, wherein the other Transition Metal is selected from the group consisting of Mn, Cu, Zn, Zr, Nb, Mo, Ta, W, and combinations thereof. 13. The process according to claim 11, wherein the other Transition Metal is selected from the group consisting of Mn, Cu, Zr, and combinations thereof. 14. The process according to claim 11, wherein said XVO4 is pre-heat treated at a temperature in the range of higher than 350° C. and below its melting point prior to forming the intimate mixture comprising said support material and said XVO4. 15. A method of exhaust gas after treatment, the method comprising: providing the composition according to claim 1; andtreating an exhaust gas with the composition. 16. A catalyst comprising: a catalyst composition according to claim 1; anda binder. 17. The catalyst composition according to claim 16, wherein XVO4 stands for a mixed Fe-/Er-Vanadate, Fe-Vanadate, optionally in mixture with other Transition Metal Vanadates. 18. The catalyst composition according to claim 17, wherein S is a support comprising TiO2 in an amount of at least 55 wt.-%, WO3 in an amount of 1-20 wt.-%, and optionally SiO2 in an amount of up to 20 wt.-%, said catalyst composition containing XVO4 in an amount between 0.2% by weight and 25% by weight.
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