Structure and catalytic behaviour of CuO–CeO 2 prepared by high-energy ball milling | Zendy

Nguyen The Luong | Zendy; Hideyuki Okumura | Zendy; Eiji Yamasue | Zendy; Keiichi N. Ishihara | Zendy

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Structure and catalytic behaviour of CuO–CeO ₂ prepared by high-energy ball milling

Author(s) -

Nguyen The Luong,

Hideyuki Okumura,

Eiji Yamasue,

Keiichi N. Ishihara

Publication year - 2019

Publication title -

royal society open science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.84

H-Index - 51

ISSN - 2054-5703

DOI - 10.1098/rsos.181861

Subject(s) - catalysis , ball mill , scanning electron microscope , materials science , redox , chemical engineering , composite number , nanotechnology , metallurgy , composite material , chemistry , organic chemistry , engineering

The aim of this study is to prepare CuO–CeO 2 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–CeO 2 powder mixture is processed in air. The redox property of milled CuO–CeO 2 sample is investigated by H 2 -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–CeO 2 catalyst is much higher than that of the CeO 2 –ZrO 2 traditional catalyst system at low temperatures.

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