PERFORMANCE AND DURABILITY OF PT-MFI ZEOLITE CATALYST FOR SELECTIVE REDUCTION OF NITROGEN MONOXIDE IN ACTUAL DIESEL-ENGINE EXHAUST

Authors
IWAMOTO M YAHIRO H SHIN HK WATANABE M GUO JW KONNO M CHIKAHISA T MURAYAMA T
Citation
M. Iwamoto et al., PERFORMANCE AND DURABILITY OF PT-MFI ZEOLITE CATALYST FOR SELECTIVE REDUCTION OF NITROGEN MONOXIDE IN ACTUAL DIESEL-ENGINE EXHAUST, Applied catalysis. B, Environmental, 5(1-2), 1994, pp. 1-6
Citations number
9
Categorie Soggetti
Chemistry Physical","Engineering, Environmental
Journal title
Applied catalysis. B, Environmental → ACNP
ISSN journal
09263373
Volume
5
Issue
1-2
Year of publication
1994
Pages
1 - 6
Database
ISI
SICI code
0926-3373(1994)5:1-2<1:PADOPZ>2.0.ZU;2-W
Abstract
Selective catalytic reduction of nitrogen monoxide (NO) by hydrocarbon in an oxidizing atmosphere has been studied over platinum-MFI zeolite (Pt-MFI) in synthesized or actual diesel engine exhaust gases. The ac tivity of Pt-MFI in the synthesized gas, containing 10% water, changed in the early stage of the use, leveled off after 150-200 h, and remai ned constant for more than 800 h. The Pt-MFI catalyst also showed stab le activity at 423-773 K and 10 000-150 000 h(-1) (gas hourly space ve locity) in actual engine exhaust with light oil as a fuel. The degree of nitrogen monoxide reduction increased linearly upon addition of eth ylene into the exhaust gas.