Plasma assisted catalytic treatment of gases

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – With means applying electromagnetic wave energy or...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C204S177000, C060S275000

Reexamination Certificate

active

07011796

ABSTRACT:
A catalytic material for the plasma-assisted treatment of the exhaust gases from internal combustion engines, consisting of an activated alumina, which contains silver or molybdena (MoO3). For silver doped alumina, a preferred silver concentration is between 0.1% and 5% by weight. The preparation and use of silver doped alumina material also is described.

REFERENCES:
patent: 3983021 (1976-09-01), Henis
patent: 4902487 (1990-02-01), Cooper
patent: 5147516 (1992-09-01), Mathur
patent: 5149511 (1992-09-01), Montreuil
patent: 5284556 (1994-02-01), Rich
patent: 5711147 (1998-01-01), Vogtlin
patent: 2270013 (1994-03-01), None
patent: 2274412 (1994-07-01), None
patent: 98/09699 (1998-03-01), None
patent: 99/12638 (1999-03-01), None
patent: 99/18494 (2000-04-01), None
patent: 00/50746 (2000-08-01), None
patent: 00/71866 (2000-11-01), None
“Plasma-Assisted Catalytic Reduction of NOx,” the English translation of H.S. Lee, B.H. Chun, K.M. Chun, “Plasma-Assisted Catalytic Reduction of NOx,” Proceedings of the KSME 1998 Fall Annual Meeting B, pp. 434-439.
1998 Pan-American Workshop On Commercialization of Advanced Oxidation Technologies, Abstracts & Speakers' Presentations, Sponsored by Science & Technology Network, London, Ontario, Canada, Jun. 27-30, 1998, Presentation by John Hoard, “Plasma-Catalysis for Lean NOx Remediation,” pp. 110-115.
Thomas Hammer and Stefan Broer, “Plasma Enhanced Selective Catalytic Reduction of NOxfor Diesel Cars,” SAE Paper 982428, 1998, pp. 7-12.
“De-NOxTechnology Using Plasma/Catalyst Composite System,” the English translation of H.S. Lee et al, “A Study on DeNOx Performance of Plasma/Catalyst System,” KSAE Autumn Conference Proceedings 1999, Paper No. 99380169.
Christopher R. McLarnon and Bernie M. Penetrante, “Effect of Gas Composition on the NOxConversion Chemistry in a Plasma,” SAE Paper 982433, 1998, pp. 37-48.
B.M. Penetrante et al, “Plasma-Assisted Catalytic Reduction of NOx,” SAE Paper 982508, pp. 57-66.
Balmer et al, “Diesel NOxReduction on Surfaces in Plasma,” SAE Paper 982511, 1998, pp. 73-78.
Hammer et al, “Plasma Enhanced Selective Catalytic Reduction: Kinetics of NOx-Removal and Byproduct Formation,” SAE Paper 1999-01-3632, 1999, pp. 1-7.
Balmer et al. “NOxDestruction Behavior of Selected Materials When Coimbined with a Non-Thermal Plasma,” Battelle Memorial Institute, 1999-01-3640, pp. 67-73.
Penetrante et al, “Sulfur Tolerance of Selective Partial Oxidation of NO to NO2in a Plasma,” SAE 1999-01-3687, pp. 111-120.
“Non-Thermal Plasma Techniques for Pollution Control,” pp. 1 and 7.
M. Shelef, “Selective Catalytic Reduction of NOxwith N-Free Reductants,” American Chemical Society, 1995, pp. 209-225.
Parvulescu et al, “Catalytic Removal of NO,” Catalysis Today, vol. 46 (1998), pp. 233-316.
“Oxidation of NO to NO2on a Pt-MFI zeolite and subsequent reduction of NOxC2H4on an In-MFI zeolite: a novel de-NOxstrategy in excess oxygen,” Chemical Communications, 1997, pp. 37-38.
Tatsuo Miyadera, “Alumina-supported silver catalysts for the selective reduction of nitric oxide with propene and oxygen-containing organic compounds,” Applied Catalysis B: Environmental, vol. 2, 1993, pp. 199-205.
Tatsuo Miyadera et al, “Alumina-supported Catalysts for the Selective Reduction of Nitric Oxide by Propene,” Chemistry Letters, 1993, pp. 1483-1486.
K. Masuda et al, “Silver-promoted catalyst for removal of nitrogen oxides from emission of diesel engines,” Applied Catalysis B: Environmental, vol. 8 (1996), pp. 33-40.
K.A. Bethke et al, “Supported Ag Catalysts for the Lean Reduction of NO with C3H6,” Journal of Catalysis, vol. 172 (1997), pp. 93-102.
T. Nakatsuji et al, “Catalytic reduction system of NOxin exhaust gases from diesel engines with secondary fuel injection,” Applied Catalysis B: Environmental, vol. 17 (1998), pp. 333-345.
A. Keshavaraja et al, “Selective catalysis reduction of NO with methane over Ag-alumina catalysis,” Applied Catalysis B: Environmental, vol. 27 (2000), pp. L1-L9.
F.C. Meunier et al, “Mechanistic Aspects of the Selective Reduction of NO by Propene over Alumina and Silver-Alumina Catalysts,” Journal of Catalysis, vol. 187 (1999), pp. 493-505.
S.G. Masters et al, “Selective reduction of nitric oxide by methanol and dimethyl ether over promoted alumina catalysts in excess oxygen,” Applied Catalysis B: Environmental, vol. 23 (1999), pp. 235-246.
“Stop-go systems get the green light,” European Automotive Design, Apr. 1998, pp. 24-26.
Suzanne E. Thomas et al, Accentus pic, “The role of NO Selective Catalysts in the Plasma Enhanced Removal of NOxand PM from Diesel Exhausts,” SAE 2001 01FL-341, 11 pages.
Barry J. Cooper and James E. Thoss, “Role of NO in Diesel Particulate Emission Control,” SAE 890404, 1989, pp. 171-183.
H.S. Lee, B.H. Chun, K.M. Chun, “Plasma-Assisted Catalytic Reduction of NOx,” Proceedings of the KSME 1998 Fall Annual Meeting B, pp. 434-439.
H.S. Lee et al, “A Study on DeNOx Performance of Plasma/Catalyst System,” KSAE Autumn Conference Proceedings 1999, Paper No. 99380169.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Plasma assisted catalytic treatment of gases does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plasma assisted catalytic treatment of gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma assisted catalytic treatment of gases will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3592074

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.