Synthesis, Characterization and Shape-Dependent Catalytic CO Oxidation Performance of Ruthenium Oxide Nanomaterials: Influence of Polymer Surfactant

被引：16

作者：

Ananth, Antony ^{[1
]}

Gregory, Duncan H. ^{[2
]}

Mok, Young Sun ^{[1
]}

机构：

[1] Jeju Natl Univ, Dept Chem & Biol Engn, Jeju 690756, South Korea

[2] Univ Glasgow, Sch Chem, Glasgow G12 8QQ, Lanark, Scotland

来源：

APPLIED SCIENCES-BASEL | 2015年 / 5卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

ruthenium oxide; polyethylene glycol; shape effect; CO oxidation; SOL-GEL SYNTHESIS; CARBON-MONOXIDE; GAMMA-ALUMINA; NANOPARTICLES; TEMPERATURE; MORPHOLOGY; NANOSHEETS; STABILITY; TEMPLATE; ESCA;

D O I：

10.3390/app5030344

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ruthenium oxide nano-catalysts supported on mesoporous gamma-Al2O3 have been prepared by co-precipitation method and tested for CO oxidation. The effect of polyethylene glycol (PEG) on the properties of the catalyst was studied. Addition of the PEG surfactant acted as a stabilizer and induced a change in the morphology of ruthenium oxide from spherical nanoparticles to one-dimensional nanorods. Total CO conversion was measured as a function of morphology at 175 degrees C and 200 degrees C with 1.0 wt.% loading for PEG-stabilized and un-stabilized catalysts, respectively. Conversion routinely increased with temperature but in each case, the PEG-stabilized catalyst exhibited a notably higher catalytic activity as compared to the un-stabilized equivalent. It can be assumed that the increase in the activity is due to the changes in porosity, shape and dispersion of the catalyst engendered by the use of PEG.

引用

页码：344 / 358

页数：15

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