Carrie L Boyer

US Patent:

7541010, Jun 2, 2009

Filed:

Dec 19, 2003

Appl. No.:

10/739324

Inventors:

Paul Worn Park - Peoria IL, US
Virgil Raymond Hester - Edelstein IL, US
Christie Susan Ragle - Havana IL, US
Carrie L. Boyer - Shiloh IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

B01D 53/56
B01D 53/94
F01N 3/20
G05D 99/00
H05H 1/00

US Classification:

4232132, 4232137, 4232391, 4232392, 423DIG 5, 423DIG 10, 422105, 204168, 204169, 204177, 204179, 60274, 60282, 60299

Abstract:

A method of making an exhaust treatment element includes washcoating a substrate with a slurry that includes a catalyst support material. At least some of the catalyst support material from the slurry may be transferred to the substrate, and silver metal (Ag) is dispersed within the catalyst support material.

US Patent:

20030118960, Jun 26, 2003

Filed:

Jun 21, 2002

Appl. No.:

10/177458

Inventors:

Mari Balmer-Millar - Chillicothe IL, US
Carrie Boyer - Peoria IL, US
Virgil Hester - Delavan IL, US
Paul Park - Peoria IL, US
Christie Ragle - Havana IL, US

International Classification:

F23Q025/00
F01N003/10

US Classification:

431/146000, 060/302000

Abstract:

A lean NOx aftertreatment system is disclosed. The lean NOx aftertreatment system includes a fuel source having oxygenated hydrocarbons homogeneously dispersed therein, a reductant extraction subsystem adapted for extracting the oxygenated hydrocarbons from the fuel, and a high performance lean NOx catalyst. The disclosed lean NOx catalyst is a metal or metal oxide doped alumina based catalyst (or other oxide material), wherein the metal or metal oxide dopant may be selected from the group consisting of indium, gallium, tin, silver, germanium, gold, nickel, cobalt, copper, iron, manganese, molybdenum, chromium, cerium, vanadium, oxides thereof, and combinations thereof.

US Patent:

20050135977, Jun 23, 2005

Filed:

Dec 19, 2003

Appl. No.:

10/739323

Inventors:

Paul Park - Peoria IL, US
Carrie Boyer - Shiloh IL, US

International Classification:

F01N003/28
B01D053/34

US Classification:

422180000, 422177000, 502439000

Abstract:

An exhaust treatment element may include a substrate and a first catalyst layer including a first promoter disposed on the substrate. The exhaust treatment element may also include a second catalyst layer including a second promoter disposed on the first catalyst layer. In addition to a multi-layer catalyst, the exhaust treatment element may include a series catalyst system where a first and second catalyst are disposed in separate regions along the length of the substrate.

US Patent:

20050288179, Dec 29, 2005

Filed:

Jun 24, 2004

Appl. No.:

10/874209

Inventors:

Paul Park - Peoria IL, US
Carrie Boyer - Shiloh IL, US

International Classification:

B01J023/00
B01J027/055

US Classification:

502159000, 502218000

Abstract:

A method of making an exhaust treatment catalyst includes dispersing a metal-based material in a first solvent to form a first slurry and allowing polymerization of the first slurry to occur. Polymerization of the first slurry may be quenched and the first slurry may be allowed to harden into a solid. This solid may be redistributed in a second solvent to form a second slurry. The second slurry may be loaded with a silver-based material, and a silver-loaded powder may be formed from the second slurry.