An investigation of the selective oxidation of NH3 to N-2 in gasified biomass in the presence of excess CO and H-2 using zeolite catalysts

Authors
Amblard, M Burch, R Southward, BWL
Citation
M. Amblard et al., An investigation of the selective oxidation of NH3 to N-2 in gasified biomass in the presence of excess CO and H-2 using zeolite catalysts, CATAL LETT, 68(1-2), 2000, pp. 105-108
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
CATALYSIS LETTERS
ISSN journal
1011372X → ACNP
Volume
68
Issue
1-2
Year of publication
2000
Pages
105 - 108
Database
ISI
SICI code
1011-372X(2000)68:1-2<105:AIOTSO>2.0.ZU;2-T
Abstract
The selective oxidation of NH3 to N-2 in simulated biogas containing a larg e excess of CO and H-2 has been examined using zeolite catalysts. Of the ma terials examined zeolite Beta gave the highest N-2 yield (85% at 475-575 de grees C), while ZSM5 produced 75% at 575 degrees C, but HY was both less ac tive and selective. In all cases N-2 is formed via an internal selective ca talytic reduction between NOx (derived from the oxidation of NH3) and NH3 a dsorbed on Bronsted sites of the zeolite.