Synthesis, characterization and shape-dependent catalytic CO oxidation performance of ruthenium oxide nanomaterials: Influence of polymer surfactant

Antony Ananth; Duncan H. Gregory; Young Sun Mok

doi:10.3390/app5030344

Synthesis, characterization and shape-dependent catalytic CO oxidation performance of ruthenium oxide nanomaterials: Influence of polymer surfactant

Antony Ananth, Duncan H. Gregory, Young Sun Mok

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Ruthenium oxide nano-catalysts supported on mesoporous ?-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 °C and 200 °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.

Original language	English
Pages (from-to)	344-358
Number of pages	15
Journal	Applied Sciences (Switzerland)
Volume	5
Issue number	3
DOIs	https://doi.org/10.3390/app5030344
Publication status	Published - 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Instrumentation
Engineering(all)
Process Chemistry and Technology
Computer Science Applications
Fluid Flow and Transfer Processes

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10.3390/app5030344

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abstract = "Ruthenium oxide nano-catalysts supported on mesoporous ?-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 °C and 200 °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.",

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T1 - Synthesis, characterization and shape-dependent catalytic CO oxidation performance of ruthenium oxide nanomaterials

T2 - Influence of polymer surfactant

AU - Ananth, Antony

AU - Gregory, Duncan H.

AU - Mok, Young Sun

PY - 2015

Y1 - 2015

N2 - Ruthenium oxide nano-catalysts supported on mesoporous ?-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 °C and 200 °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.

AB - Ruthenium oxide nano-catalysts supported on mesoporous ?-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 °C and 200 °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.

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Synthesis, characterization and shape-dependent catalytic CO oxidation performance of ruthenium oxide nanomaterials: Influence of polymer surfactant

Abstract

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