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Title: Structure and catalytic behaviour of CuO-CeO2 prepared by high-energy ball milling
Authors: The Luong, Nguyen
Okumura, Hideyuki
Yamasue, Eiji
Ishihara, Keiichi N.
Author's alias: 奥村, 英之
山末, 英嗣
石原, 慶一
Keywords: CuO
oxygen storage capacity
H2-temperature-programmed reduction
CeO2
ZrO2
Issue Date: 6-Feb-2019
Publisher: The Royal Society
Journal title: Royal Society Open Science
Volume: 6
Issue: 2
Thesis number: 181861
Abstract: The aim of this study is to prepare CuO-CeO2 composite by means of mechanical milling and to investigate its characteristics as a catalyst. The structural and morphological features of milled samples are observed by X-ray diffractometry and scanning electron microscopy. The redox property and total OSC (oxygen storage capacity) of the milled sample were measured by using GC-TCD and TG-DTA, which are important parameters to indicate the effectiveness of catalysts. Interestingly, reduction of CuO is repeatedly observed when milling of CuO-CeO2 powder mixture is processed in air. The redox property of milled CuO-CeO2 sample is investigated by H2-TPR, where three reduction peaks are observed for 0 h milling and only one broad peak for various other milling times. The total OSC of mechanically driven CuO-CeO2 catalyst is much higher than that of the CeO2-ZrO2 traditional catalyst system at low temperatures.
Rights: © 2019 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
URI: http://hdl.handle.net/2433/237391
DOI(Published Version): 10.1098/rsos.181861
Appears in Collections:Journal Articles

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