Method of using a low cost catalyst system

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4232137, 252465, 252466PT, 252477R, B01D 5336

Patent

active

043741037

ABSTRACT:
There is disclosed a method of using an exhaust gas catalyst for treatment of exhaust gases developed by burning a hydrocarbon based fuel in an internal combustion engine. These exhaust gases contain varying amounts of unburned hydrocarbons, carbon monoxide and oxides of nitrogen depending upon the operating conditions of the internal combustion engine. This specification teaches the use of an improved catalyst composition in which a support medium is provided for supporting the catalyst system, the support medium having an upstream support portion and a downstream support portion over which the exhaust gases pass in succession. The upstream support portion of the support medium has deposited thereon palladium and the downstream support portion of the support medium has deposited thereon palladium and tungsten. Tungsten is present on the downstream support portion of the support medium in a quantity such that tungsten is available to substantially all of the palladium on that portion of the support medium. The catalyst system has particular utility as a three-way catalyst operating at approximately stoichiometric conditions or as a catalyst for use in conjunction with the so-called "fast burn/low friction" engines or as an oxidation catalyst.

REFERENCES:
patent: 3554929 (1971-01-01), Aarons
patent: 3910770 (1975-10-01), Kobylinsky et al.
patent: 3914377 (1975-10-01), Anderson et al.
patent: 4192779 (1980-03-01), Ghandi et al.
"Chem. Abst." vol. 88, 1978, 189663z.

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

Method of using a low cost catalyst system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of using a low cost catalyst system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of using a low cost catalyst system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1801028

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