Ultrasound-assisted polyol method for the preparation of SBA-15-supported ruthenium nanoparticles and the study of their catalytic activity on the partial oxidation of methane.
Metallic Ru nanoparticles have been successfully produced and incorporated into the pores of SBA-15 in situ employing a simple ultrasound-assisted polyol method. The product has been confirmed by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy, where ultrasound provides both the energy for the reduction of the Ru(III) ion and the driving force for the loading of the Ru(0) nanoparticles into the SBA-15 pores. An ultrasound-assisted insertion mechanism has been proposed based on the microjets and shake-wave effect of the collapsed bubbles. The catalytic properties of the SBA-15-supported Ru nanoparticles have been tested by the partial oxidization of methane and show very high activity and high CO selectivity.
Li
Hongliang
H
Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel.
Wang
Renzhang
R
Hong
Qi
Q
Chen
Luwei
L
Zhong
Ziyi
Z
Koltypin
Yuri
Y
Calderon-Moreno
J
J
Gedanken
Aharon
A
D002384:Catalysis; D008697:Methane / Q000138:chemical synthesis* / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects; D010084:Oxidation-Reduction; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D012428:Ruthenium / Q000737:chemistry* / Q000528:radiation effects; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D014465:Ultrasonics; D014961:X-Ray Diffraction / Q000379:methods
D011108:Polymers; C509969:SBA-15; C024617:polyol; D012822:Silicon Dioxide; D012428:Ruthenium; D008697:Methane