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Alumina supported, perovskite oxide based catalytic materials and their auto-exhaust application

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Title Alumina supported, perovskite oxide based catalytic materials and their auto-exhaust application
 
Creator Labhsetwar , Nitin
Watanabe, A
Biniwale, R B
Kumar, Rakesh
Mitsuhashi, T
 
Subject Materials Science
 
Description Substituted lanthanum manganate type perovskites have been synthesized following co-precipitation and a modified in
situ method. These perovskites have been supported on cordierite honeycomb with and without alumina washcoat. Alumina
washcoated supports with lanthana pre-coat, have been found suitable for the in situ synthesis of perovskites to avoid reactivity
of perovskite precursors with alumina (in absence of lanthana pre-coat). This modified synthesis has resulted in remarkable
improvement in surface area while, excellent catalyst adhesion has also been observed. The catalyst composition has also
been promoted by a small amount of platinum, which has resulted in improved catalytic activity. These catalysts have been
first evaluated using a pure gas laboratory evaluation assembly. Catalysts prepared on alumina washcoated honeycomb having
lanthana pre-coat, shows better activity than the samples prepared by co-precipitation method. Catalytic converter prototypes
have been prepared using the selected catalyst and evaluated on engine and chassis dynamometers. The converter shows
good conversion activity for all the three pollutants, viz. CO, HC and NOx . These results substantiate the possibility of using
supported perovskites for automobile applications. The detailed characterization of supported perovskites, however, could
not be done conclusively and demand for further investigations, to properly understand the interaction of pre-coat, alumina
washcoat and catalyst.
 
Publisher Elsevier
 
Date 2001-09-28
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/976/1/labhsetwar2001.pdf
Labhsetwar , Nitin and Watanabe, A and Biniwale, R B and Kumar, Rakesh and Mitsuhashi, T (2001) Alumina supported, perovskite oxide based catalytic materials and their auto-exhaust application. Applied Catalysis B: Environmental, 33 (2). pp. 165-173. ISSN 0926-3373
 
Relation https://www.journals.elsevier.com/applied-catalysis-b-environmental
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