Process for utilizing doubly promoted catalyst with high geometr

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

423DIG13, 60299, B01D 5336

Patent

active

045419957

ABSTRACT:
An extrudate catalyst suitable for auto emission control is made from a solid, transitional alumina with a partially hollow interior. Deposited on the extrudate are two promoters, ceria and an alkali metal, and one or more platinum group metals. The preferred alkali metal is in the oxide form as lithia. The cylindrical extrudate has internal reinforcing vanes or ribs extending from the inner wall to the center of the extrudate particle. This configuration permits the catalyst to have the large geometric surface area per reactor volume yet, because of the openings inside the extrudate, the catalyst particles do not exhibit a large pressure drop when packed in a deep bed. These catalysts provide greater hydrocarbon and carbon monoxide conversions than do similar size spherical particles and they have improved light-off characteristics.

REFERENCES:
patent: 2212932 (1940-08-01), Fairlie
patent: 2408164 (1946-09-01), Foster
patent: 3907710 (1975-09-01), Lundsager
patent: 4476246 (1984-10-01), Kim et al.

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

Process for utilizing doubly promoted catalyst with high geometr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for utilizing doubly promoted catalyst with high geometr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for utilizing doubly promoted catalyst with high geometr will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-369455

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