Ordered mesoporous carbons : synthesis, characterization and catalytic application규칙성 메조포러스 탄소 물질의 합성과 특성규명 및 촉매응용성 연구

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The work presented in this thesis addressed the synthesis of new type of porous carbon materials: ordered mesoporous carbons, and their applications as supports for catalytic nanoparticles. Ordered mesoporous carbons have been synthesized via the template-directed synthesis strategy using ordered mesoporous silicas as templates. The synthesis procedure involves the infiltration of pores of mesoporous silicas with carbon precursors, such as sucrose, furfuryl alcohol and acetylene gas, their carbonization, and subsequent template removal by NaOH or HF. Mesoporous silica materials constructured with three-dimensionally interconnected pores, including MCM-48, SBA-1 and SBA-15 were successfully used to synthesize mesoporous carbons with cubic or hexagonal framework structures. The stabilities of the ordered mesoporous carbons have been evaluated by the X-ray diffraction patterns. The results indicated that the mesoporous carbons maintained their structural order under mechanical pressing and strong acid and base. A general strategy for the synthesis of tube-type mesoporous carbon structures has been developed. The new carbon material, designated as CMK-5, was synthesized using mesoporous SBA-15 aluminosilicate as a template and furfuryl alcohol as a carbon source. The structural characterizations by X-ray diffraction, transmission electron microscopy and pore size analysis revealed that the CMK-5 carbon is constructed with the 2-dimensional hexagonal arrays of uniform carbon nanopipes. The CMK-5 mesoporous carbon contains two different mesopores: one pore is generated from the inside of carbon nanopipes and the other from the space between the adjacent nanopipes. The CMK-5 carbon exhibited very high surface area around $2000 ㎡g^{-1}$ and pore volume of $2 ㎤g^{-1}$. The ordered mesoporous carbons as new supports for catalytic nanoparticles have been investigated. The nanopipe-type CMK-5 mesoporous carbon showed high metal dispersion upon supporting platinum na...
Advisors
Ryoo, Ryongresearcher유룡researcher
Description
한국과학기술원 : 화학과,
Publisher
한국과학기술원
Issue Date
2004
Identifier
240565/325007  / 020005311
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 화학과, 2004.8, [ x, 159 p. ]

Keywords

METAL NANOPARTICLE; MESOPOROUS CARBON; TEMPLATE SYNTHESIS; MESOPOROUS SILICA; FUEL CELL; 연료전지; 금속 나노입자; 메조포러스 탄소; 주형합성; 메조포러스 실리카

URI
http://hdl.handle.net/10203/31632
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=240565&flag=dissertation
Appears in Collection
CH-Theses_Ph.D.(박사논문)
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