Structure and catalytic behaviour of CuO-CeO2 prepared by high-energy ball milling

被引：10

作者：

Nguyen The Luong ^{[1
,2
]}

Okumura, Hideyuki ^{[1
]}

Yamasue, Eiji ^{[1
]}

Ishihara, Keiichi N. ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Energy Sci, Dept Socioenvironm Energy Sci, Sakyo Ku, Yoshida Honmachi, Kyoto 6068501, Japan

[2] Hanoi Univ Sci & Technol, Sch Transportat Engn, Dept Internal Combust Engine, 1 Dai Co Viet St, Hanoi, Vietnam

来源：

ROYAL SOCIETY OPEN SCIENCE | 2019年 / 6卷 / 02期

关键词：

CeO2; CuO; ZrO2; H-2-temperature-programmed reduction; oxygen storage capacity; NANOCRYSTALLINE CERIUM OXIDE; OXYGEN STORAGE CAPACITY; CARBON-MONOXIDE; CUO/CEO2; CATALYSTS; CO OXIDATION; COPPER-OXIDE; REDUCTION; CU; NANOPARTICLES; ACTIVATION;

D O I：

10.1098/rsos.181861

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 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-CeO2 catalyst is much higher than that of the CeO2-ZrO2 traditional catalyst system at low temperatures.

引用

页数：13

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