Immobilization of nanocatalysts on cordierite honeycomb monoliths for low temperature NOx reduction

Title
Immobilization of nanocatalysts on cordierite honeycomb monoliths for low temperature NOx reduction
Authors
고민정이백경아닐이원구주오심하헌필임흥빈허남회
Keywords
nanocatalyst; de NOx activity; immobilization of catalyst
Issue Date
2009-11
Publisher
Applied catalysis A, General
Citation
VOL 370, NO 1-2, 102-107
Abstract
Noble metal nanocatalysts such as Pd, Pt, and Au were strongly immobilized on the inside walls of monolithic honeycomb-structured cordierite, in which bi-functional molecules were used as linkers for anchoring noble metal nanoparticles (NPs) on the cordierite surface. The supported nanocatalysts were characterized by ICP-MS, TEM, and X-ray powder diffraction. The efficiencies of the immobilized nanocatalysts for the removal of harmful nitrogen oxides (NOx) have been investigated by measuring the deNOx capability as a function of temperature. The catalytic activities depend mainly on the compositions of the nanocatalysts. The Pd/Pt bi-metal catalyst anchored on the cordierite surface shows higher NOx conversion and better activity than the commercial emission catalyst at low temperature region, which could be due to the large portion of active surface areas of the catalysts with nanometer scale.
URI
http://pubs.kist.re.kr/handle/201004/36091
ISSN
0926-860X
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KIST Publication > Article
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