Precious metal loaded ln/H-ZSM-5 for reduction of nitric oxide with methane in the presence of water vapor

Conference · Mon Dec 30 23:00:00 EST 1996

OSTI ID:468008

Ogura, M; Kikuchi, E ^[1]

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1. Waseda Univ., Tokyo (Japan)

The catalytic activity of In/H-ZSM-5 for the selective reduction of nitric oxide (NO) with methane was improved by the addition of Pt and Ir which catalyzed NO oxidation, even in the presence of water vapor. It was also found that the precious metal, particularly Ir loaded In/H-ZSM-5 gave a low reaction order with respect to NO, and then showed a high catalytic activity for the reduction of NO at low concentrations, if compared with In/H-ZSM-5. The latter effect of the precious metal is attributed to the enhancement of the chemisorption of NO and also to the increase in the amount of NO{sub 2} adsorbed on In sites.

• OSTI ID: 468008
• Report Number(s): CONF-960652--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
02 PETROLEUM
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COMBUSTION PRODUCTS
GASEOUS WASTES
INDIUM
INFRARED SPECTRA
IRIDIUM
METHANE
NITRIC OXIDE
NITROGEN DIOXIDE
PLATINUM
REACTION INTERMEDIATES
SELECTIVE CATALYTIC REDUCTION
ZEOLITES