Korea Advanced Institute of Science and Technology · Engineering
민키 촬 교수의 연구실은 메세포러스 소재, 특히 메세포러스 실리카, 제올라이트, 알루미노포스페이트 및 다공성 탄소 등에서의 나노구조 제어와 기능화를 핵심으로 합니다. 금속 클러스터의 제올라이트 내 봉입, 고분자-실리카 복합체의 정밀 합성, 그리고 CO₂ 흡착 및 수소 저장에 응용 가능한 다공성 재료의 설계를 통해 에너지 및 환경 분야의 핵심 기술을 개발하고 있습니다. 특히, 고온·고압 조건에서도 뛰어난 안정성과 재사용성을 확보한 촉매 및 흡착재의 설계에 초점을 맞추고 있습니다.
Figures are computed from collected data and may differ slightly.
We report here a general synthetic strategy to encapsulate metal clusters within zeolites during their hydrothermal crystallization. Precursors to metal clusters are stabilized against their premature colloidal precipitation as hydroxides during zeolite crystallization using bifunctional (3-mercaptopropyl)trimethoxysilane ligands. Mercapto (-SH) groups in these ligands interact with cationic metal centers, while alkoxysilane moieties form covalent Si-O-Si or Si-O-Al linkages that promote zeolite
Free-radical polymerization inside mesoporous silica has been investigated in order to open a route to functional polymer-silica composite materials with well-defined mesoporosity. Various vinyl monomers, such as styrene, chloromethyl styrene, 2-hydroxyethyl methacrylate, and methacrylic acid, were polymerized after impregnation into mesoporous silicas with various structures, which were synthesized using polyalkylene oxide-type block copolymers. The location of the polymers was systematically c
A direct hydrothermal assembly process was developed to synthesize mesoporous aluminophosphates that are constructed with crystalline microporous frameworks, by the addition of organosilane surfactants into the conventional synthesis composition for crystalline microporous aluminophosphates.
An ethylenediamine-grafted Y zeolite effectively adsorbs CO<sub>2</sub>from a wet flue gas and it is highly regenerable through a temperature swing adsorption (TSA) process.
Exchange for the better: Mesoporous sodalite and NaA zeolite exchanged with Pd(2+) exhibit remarkably high activity and reusability in C-C coupling reactions under aerobic atmosphere. It is proposed that the catalytic reactions are mediated by a molecular Pd(0) species generated in situ within the pores (see picture), which is oxidized back to Pd(2+) by O(2), preventing the formation of catalytically inactive Pd(0) agglomerates.
The effects of KOH activation on pore structure of ordered mesoporous carbons were analyzed by transmission electron microscopy, powder X-ray diffraction and argon adsorption. The activation led to remarkable increases in micropore volume and BET surface area up to 1.0 mL g−1 and 2700 m2 g−1, at the expense of the mesostructural order. The resultant carbons with various microporosity and mesoporosity were tested for room-temperature adsorption of hydrogen under high pressure. The adsorption data
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