Synthesis and Characterization of SiC Nanocomposite Catalyst Supports with Self-Formed Nano-whiskers

Title
Synthesis and Characterization of SiC Nanocomposite Catalyst Supports with Self-Formed Nano-whiskers
Authors
김인호조정호문동주김상우
Keywords
Synthesis; SiC Nanocomposite; Catalyst Supports; Nanowires; nanocatalyst; Ni; Silicon carbide; Alumina; Supercritical fluids; Catalysts
Issue Date
2012-08
Publisher
IUMRS-ICA2012
Abstract
Silicon carbide and alumina nanomaterials have been extensively studied for their application to heterogeneous catalyst supports required to high temperature operation because of their advantages which show a high resistance towards oxidation, a high mechanical strength, a high thermal conductivity, a low specific weight, and low chemical reactivity. Additionally, the remarkable improvement of silicon carbide particles with alumina was achieved in high reliability and temperature deformation resistance of alumina had been reported. Advanced techniques have recently been proposed to produce heterogeneous nanomaterials using a supercritical fluid technology, which leads to a novel approach for the synthesis of metal oxide nanoparticles with high surface area. In our study, nickel-based catalysts supported by silicon carbide-alumina nanowire beads were prepared via modified sol-gel process mediated by supercritical carbon dioxide and subsequent heat-treatment for application of heterogeneous catalytic reaction, particularly, in natural gas to liquid (GTL) process. Highly porous silicon carbide-alumina beads with self-formed nanowires were prepared and their nanostuctural and morphological evolutions were systematically investigated.
URI
http://pubs.kist.re.kr/handle/201004/43461
Appears in Collections:
KIST Publication > Conference Paper
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