ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
AuNP (gold nanoparticle) supported by oxide shows a high reactivity for a PROX (preferentialoxiation) reaction at low temperature. Au catalysts were usually prepared by conventional methodssuch as precipitation, impregnation and vapor phase grafting. In this study, we developed a novelmethod for the preparation of AuNPs supported on a bimodal nanoporous alumina. The AuNPs wereprepared in a toluene phase by the modified Brust method. The metal particle size was able to becontrolled from 2 to 50 nm via the control of the surfactant concentrations. The resulting materialswere characterized by BET, FE-SEM, TEM, and XRD analyses. After calcinations at 700oC,AuNP/Al2O3 catalyst revealed a bimodal nanoporous structure, with the pore sizes of 3.5 and 7 nm,and demonstrated both a high surface area (350 m2/g) and pore volume (0.9 cm3/g)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.135.53.pdf
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