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Title: Oscillating behavior in N{sub 2}O decomposition over Rh supported on zirconia-based catalysts: The role of the reaction conditions

Abstract

Rhodium particles supported on zirconia doped with neodymium oxide show an oscillating behavior in N{sub 2}O decomposition in the presence of oxygen and water, but the oscillating behavior occurs only when the zirconia surface is hydrated. The phenomenon is ascribed to a dynamic process of surface accumulation of atomic oxygen (produced by N{sub 2}O dissociation) on the Rh surface and reconstruction of these supported Rh particles above a level of oxygen coverage, with a rapid drop in the activity and release of gaseous dioxygen. This in situ reconstruction of Rh particles, however, may occur only on a hydrated surface.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Messina (IT)
OSTI Identifier:
20076105
Resource Type:
Journal Article
Journal Name:
Journal of Catalysis
Additional Journal Information:
Journal Volume: 192; Journal Issue: 1; Other Information: PBD: 15 May 2000; Journal ID: ISSN 0021-9517
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 01 COAL, LIGNITE, AND PEAT; NITROUS OXIDE; DECOMPOSITION; RHODIUM; CATALYTIC EFFECTS; CATALYST SUPPORTS; HYDRATES; OXYGEN; DESORPTION; AIR POLLUTION CONTROL

Citation Formats

Centi, G., Dall'Olio, L., and Perathoner, S. Oscillating behavior in N{sub 2}O decomposition over Rh supported on zirconia-based catalysts: The role of the reaction conditions. United States: N. p., 2000. Web. doi:10.1006/jcat.2000.2847.
Centi, G., Dall'Olio, L., & Perathoner, S. Oscillating behavior in N{sub 2}O decomposition over Rh supported on zirconia-based catalysts: The role of the reaction conditions. United States. doi:10.1006/jcat.2000.2847.
Centi, G., Dall'Olio, L., and Perathoner, S. Mon . "Oscillating behavior in N{sub 2}O decomposition over Rh supported on zirconia-based catalysts: The role of the reaction conditions". United States. doi:10.1006/jcat.2000.2847.
@article{osti_20076105,
title = {Oscillating behavior in N{sub 2}O decomposition over Rh supported on zirconia-based catalysts: The role of the reaction conditions},
author = {Centi, G. and Dall'Olio, L. and Perathoner, S.},
abstractNote = {Rhodium particles supported on zirconia doped with neodymium oxide show an oscillating behavior in N{sub 2}O decomposition in the presence of oxygen and water, but the oscillating behavior occurs only when the zirconia surface is hydrated. The phenomenon is ascribed to a dynamic process of surface accumulation of atomic oxygen (produced by N{sub 2}O dissociation) on the Rh surface and reconstruction of these supported Rh particles above a level of oxygen coverage, with a rapid drop in the activity and release of gaseous dioxygen. This in situ reconstruction of Rh particles, however, may occur only on a hydrated surface.},
doi = {10.1006/jcat.2000.2847},
journal = {Journal of Catalysis},
issn = {0021-9517},
number = 1,
volume = 192,
place = {United States},
year = {2000},
month = {5}
}