Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture
Reexamination Certificate
2004-10-14
2008-10-07
Langel, Wayne (Department: 1793)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
C423S239100, C423S244020, C423S245100, C423S24000R, C502S217000, C502S309000, C502S324000, C502S331000, C502S337000, C502S338000, C502S339000
Reexamination Certificate
active
07431904
ABSTRACT:
The present invention relates to a catalyst support material and catalysts made therefrom having improved resistance towards erosion.The catalyst support contains at least 20% by weight of TiO2being present mainly in the anatase form. Furthermore, the catalyst support contains diatomaceous earth in an amount of at least 2% and less than 80% by weight of the catalyst support.In one embodiment catalysts made from said catalyst support contain oxides or sulfates of base metals from the group of V, W, Mn, Nb, Mo, Ni, Fe or Cu. Another option is a catalyst prepared from said catalyst support containing Pt or Pd.Said catalysts are used for treatment of a flue gas. More specifically the catalyst supports prepared according to the present invention and showing improved resistance towards erosion are used in flue gas containing a large amount of particulate matter and for selective catalytic reduction of nitrous oxides.
REFERENCES:
patent: 4284530 (1981-08-01), Sherif
patent: 4293445 (1981-10-01), Shimizu et al.
patent: 4321224 (1982-03-01), Shimizu et al.
patent: 4350670 (1982-09-01), Matsuda et al.
patent: 4378338 (1983-03-01), Imanari et al.
patent: 4497902 (1985-02-01), Bertolacini et al.
patent: 4593014 (1986-06-01), Halluin et al.
patent: 4929586 (1990-05-01), Hegedus et al.
patent: 5175136 (1992-12-01), Felthouse
patent: 5198403 (1993-03-01), Brand et al.
patent: 5215953 (1993-06-01), Blumrich et al.
patent: 5276250 (1994-01-01), Hagenmaier et al.
patent: 5387734 (1995-02-01), Hagenmaier et al.
patent: 5391530 (1995-02-01), Nowitzki et al.
patent: 5420085 (1995-05-01), Newkirk et al.
patent: 5451557 (1995-09-01), Sherif
patent: 5512259 (1996-04-01), Hagenmaier et al.
patent: 5571763 (1996-11-01), Takemoto et al.
patent: 6509293 (2003-01-01), Zoeller et al.
patent: 6571420 (2003-06-01), Healy et al.
patent: 6616905 (2003-09-01), Kawamura et al.
patent: 0275 620 (1988-07-01), None
patent: 1 488 767 (1977-10-01), None
patent: 52036118 (1977-03-01), None
patent: 8-266897 (1996-10-01), None
patent: WO 99/43195 (1999-09-01), None
D.H. Scott, “Ash Behavior During Combustion and Gasification”, IEA Coal Research 1999, Nov. 1999.
E.F. Sverdrup et al., “Control of Fan Erosion in Coal-Fired Power Plants”, Westinghouse Research Laboratories, Aug. 1981.
D. Scott, “Ash-Impaction Wear Measurements and Erosion-Propensity Classification”, CCC/24, IEA Coal Research 1999, ISBN 92-9029-334-9, no month.
E. Raask, “Erosion Wear in Coal Utilization”, Hemisphere Publishing Corp., 1988, no month.
Høj Jakob Weiland
Jørgensen Claus S.
Dickstein & Shapiro LLP
Haldor Topsoe A/S
Langel Wayne
LandOfFree
Catalyst support material, catalysts prepared therefrom and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst support material, catalysts prepared therefrom and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst support material, catalysts prepared therefrom and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4011637