Ammonia oxidation catalyst system

Patent metadata

Field	Value
Publication number	US-8992869-B2
Application number	US-201213722384-A
Country	US
Kind code	B2
Filing date	Dec 20, 2012
Priority date	Dec 20, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

A treatment device configured to receive a flow of exhaust from a power source is disclosed. The treatment device may have a first layer, a second layer, and a substrate layer. The first layer may include a selective catalytic reduction layer, and the second layer may be disposed downstream of the first layer and include an oxidation catalyst support. The substrate layer may be disposed adjacent to the second layer. Additionally, an additive may be disposed downstream of the first layer. The additive may be operative to substantially prohibit migration of a component of the second layer to the first layer upon treatment of the flow of exhaust by the oxidation catalyst support.

First claim

What is claimed is:

1. A treatment device configured to receive a flow of exhaust from a power source, the treatment device comprising:
a first layer including a selective catalytic reduction layer;
a second layer disposed downstream of the first layer and including an oxidation catalyst support;
a substrate layer disposed adjacent to the second layer; and
an additive disposed between the first and second layers, wherein the additive is operative to substantially prohibit mi…

Assignees

• Caterpillar Inc

Inventors

• Ratts Joshua L
• Silver Ronald Graham

Classifications

• Y10S502/52712

  Cross-Sectional Technologies · mapped topic

• B01D53/9404 Primary

  Operations & Transport · mapped topic

• Y10S502/50

  Cross-Sectional Technologies · mapped topic

• B01D2255/20776

  Operations & Transport · mapped topic

• B01D2255/1023

  Operations & Transport · mapped topic