EXHAUST GAS CLEANING CATALYST

Japanese Patent JP3499350

B2

PROBLEM TO BE SOLVED: To make both NOx and NH3 to be cleaned simultaneously by causing platinum and copper to be borne by zeolite in an exhaust gas cleaning catalyst for cleaning NOx and NH3 contained in an exhaust gas in an oxidation atmosphere.
SOLUTION: A catalytic converter 1 installed in an exhaust gas pipe 3 connected to an internal combustion engine incorporates an exhaust gas cleaning catalyst 2. This exhaust gas cleaning catalyst 2 is provided with zeoilte (platinum/copper zeolite catalyst) as a carrier, bearing platinum Pt and copper Cu through an ion exchange process. The platinum/copper zeolite catalyst 2a is borne, for example, on the surface of a honeycomb-like base material. The zeolite is preferably a silica-rich zeolite such as ZSM-5 type, ferrielite or mordenite. Thus it is possible to perform the oxidation reaction of NH3 at comparatively lower temperature of an inflow exhaust gas because platinum Pt has an efficient oxidizing power even at low temperatures.

JP2008264653	EXHAUST GAS PURIFYING APPARATUS
JP5082558	Manufacturing method of catalyst for exhaust gas purification
WO/2013/161167	EXHAUST GAS CLEANING CATALYST MATERIAL, AND EXHAUST GAS CLEANING CATALYST CONTAINING SAID CATALYST MATERIAL

Yukio Kinugasa
Takehisa Yaegashi
Kohei Igarashi
Takaaki Ito
Naoto Suzuki
Takaaki Kanazawa
Takahiro Hayashi
Koji Yokota
Yasutaka Nagai

JP32029995A

February 23, 2004

December 08, 1995

Click for automatic bibliography generation  

TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota Central R & D Labs.

F01N3/10; B01D53/86; B01D53/94; B01J29/064; (IPC1-7): B01J29/064; B01D53/86; B01D53/94

JP549934A
JP5131118A

Takashi Ishida (3 others)
Takashi Ishida (2 outside)

Previous Patent: MODULAR CONNECTOR

Next Patent: DOUBLE THROAT PUMP WITH FLOW RATE PUMPING CHARACTERISTIC IMPROVED