Automobileexhaust emission controlby catalysts

David N Belton ,

Kathleen C Taylor

General Motors Research and Development Center, Mail Code 480 106 224,

General Motors Corporation, Warren, MI 48090, USA

Available online 16 March 2000.

http://dx.doi.org/10.1016/S1359-0286(99)80017-5, How to Cite or Link Using

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The past year has seen a wealth of published articles from around the world related to

automobileexhaust emission control. The applied automotive catalysis work continues in

response to the need for robust systems that comply with new, stricter regulations for

the control of nitric oxides (NOx), hydrocarbons and carbon monoxide under an expanded

range of driving conditions that includes higher speeds and air conditioner operation. The

search also continues for catalysts that effectively reduce nitric oxide levels in lean feed

streams. Although promising results continually emerge, no catalysts have surfaced that

meet all the desired requirements for lean burn gasoline or diesel engines. In the

absence of effective lean NOxcatalysts, NOxsorption systems are emerging as the

alternative method for lean NOxcontrolin gasoline engines.

Abbreviation