Delaminated Fe{sub 2}O{sub 3}-pillared clay: Its preparation, characterization, and activities for selective catalytic reduction of NO by NH{sub 3}
- State Univ. of New York, Buffalo, NY (United States)
A delaminated Fe{sub 2}O{sub 3}-pillared clay catalyst was prepared for the selective catalytic reduction (SCR) of NO by NH{sub 3} at above 300{degrees}C. The delaminated pillared clay was characterized by inductively coupled plasma-atomic emission spectroscopy chemical analysis, X-ray diffraction structure and line broadening analyses, micropore size probing, and Moessbauer analysis. These analyses showed that the catalyst contained fragmented Fe{sub 2}O{sub 3}-pillared clay forming {open_quotes}house-of-cards{close_quotes} structure with dispersed Fe{sub 2}O{sub 3} particles approximately 170 {angstrom} in size. The SCR activity of the delaminated pillared clay was higher than the commercial-type V{sub 2}O{sub 5} + WO{sub 3}/TiO{sub 2} catalyst, and also higher than the undelaminated pillared clay and supported Fe{sub 2}O{sub 3} catalysts, under conditions without SO{sub 2}. Infrared measurements of adsorbed NH{sub 3} showed strong Bronsted acidity which was caused possibly by interactions between Fe{sub 2}O{sub 3} and clay. 75 refs., 12 figs., 5 tabs.
- OSTI ID:
- 75801
- Journal Information:
- Journal of Catalysis, Vol. 151, Issue 1; Other Information: PBD: Jan 1995
- Country of Publication:
- United States
- Language:
- English
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