서지주요정보
Synthesis of ordered mesoporous carbons using furfuryl alcohol and characteristics of various ordered mesoporous carbons after high temperature treatment = 퍼퍼릴 알코올을 이용한 메조구조규칙성 탄소의 합성과 다양한 메조구조규칙성 탄소의 고온 처리 후의 특성규명에 관한 연구
서명 / 저자 Synthesis of ordered mesoporous carbons using furfuryl alcohol and characteristics of various ordered mesoporous carbons after high temperature treatment = 퍼퍼릴 알코올을 이용한 메조구조규칙성 탄소의 합성과 다양한 메조구조규칙성 탄소의 고온 처리 후의 특성규명에 관한 연구 / In-Soo Park.
저자명 Park, In-Soo ; 박인수
발행사항 [대전 : 한국과학기술원, 2005].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8016751

소장위치/청구기호

학술문화관(문화관) 보존서고

DCH 05018

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Ordered mesoporous carbons (OMC) were synthesized using a furfuryl alcohol carbon precursor and a SBA-15 silica template under the ambient pressure conditions using template-directed synthesis strategy. Furfuryl alcohol was polymerized using Lewis acid, such as framework aluminum, $Co^{2+}, Ni^{2+}$, and $Fe^{3+}$ ions, and it was further carbonized by heating up to 900℃ inside of the SBA-15 template. The resulting OMC products were characterized by X-ray powder diffraction (XRD), nitrogen adsorption - desorption, transmission electron microscope (TEM), differential scanning calorimetry (DSC), $^1H$ NMR, and X-ray adsorption fine structure (XAFS) experiments. The correlation between the extent of the polymerization of furfuryl alcohol and the resulting mesopore structures were investigated with various conditions. Especially, if $Co^{2+}, Ni^{2+}$, and $Fe^{3+}$ ions were employed as Lewis acid catalysts for the polymerization of furfuryl alcohol, the final OMC products were supported with magnetic nanoparticles by the reduction of metal ions and could be attracted by strong hard magnets. Thus, the OMC products containing magnetic nanoparticles can be applied for the easy preparation of adsorbents for magnetic separations. The OMC products with 2-D hexagonal symmetry, obtained by SBA-15 templates with various pore diameters and by furfuryl alcohol or acenaphthene as a carbon source, were heated with various temperatures up to 2400℃. The structural changes of OMC structures after the high temperature heating were characterized by XRD, nitrogen adsorption -desorption, and TEM. The results show that the larger carbon-rod diameters exhibit the more endurance to the thermal destructions. The CMK-5 structures with tube-type framework structures from a furfuryl alcohol carbon source undergo the microphase transformations with rising temperatures, and finally the CMK-5 structures are converted to graphitic carbon framework, which are aligned with rod directions. Although the CMK-3G structures, which have a graphitic framework with perpendicular stacking to the rod directions, are relatively stable up to 1600℃, the mesoscopic orders are disappeared above at 2000℃ because of the inter-layer slippages between the discoid-carbon layers while the bulk graphites are formed.

서지기타정보

서지기타정보
청구기호 {DCH 05018
형태사항 xii, 106 p. : 삽도 ; 26 cm
언어 영어
일반주기 저자명의 한글표기 : 박인수
지도교수의 영문표기 : Ryong Ryoo
지도교수의 한글표기 : 유룡
학위논문 학위논문(박사) - 한국과학기술원 : 화학과,
서지주기 Includes references
주제 Ordered Mesoporous Carbon
Furfuryl Alcohol
High Temperature
메조구조 규칙성 탄소
퍼퍼릴 알콜
고온 가열
QR CODE qr code