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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제121회 학술발표회 및 총회 Synthesis of highly dispersed Ni nanoparticles on mesoporous silica nanospheres via melt infiltration for catalytic hydrogen transfer of acetophenone

등록일
2018년 2월 7일 12시 20분 06초
접수번호
4828
발표코드
INOR.P-139 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Inorganic Chemistry
저자 및
공동저자
AKERKE BEREKETOVA, Kang Hyun Park*
Department of Chemistry, Pusan National University, Korea

Catalytic hydrogenation by transfer with a variety of hydrogen donors have been widely used in organic syntheses in the last few years. Various catalysts have been developed in this reaction, such as, noble, and base metal, even metal-free catalyst. Among them, Nickel has significant catalytic components because of their high economics, accessibility, and reactivity. In this work, a novel chemical transformation and subsequent morphology change of a nickel–silica hybrid system was synthesized. Nickel cores inside silica shells in Ni@mSiO2 formed, mesoporous silica with a modified stöber process and very tiny nickel nanoparticles (<3nm) were generated via Melt infiltration method. By melt infiltration, we adjusted the metal distribution to an even, uniform outline for 10 wt% metal loadings by controlling infiltration process. The obtained Ni dispersion of Ni@mSiO2 nanocatalysts was calculated to be 36.3%, exhibiting high value. The surface area and total pore volume of Ni@mSiO2 was estimated to be 636 m2·g-1 and 0.3 cm3·g-1. The synthesized Ni@mSiO2 nanospheres showed high activity as a catalyst, 2-phenylethanol was produced in acetophenone without gaseous hydrogen under 2-propanol as a solvent and reducing agent. Acetophenone reduction mechanisms produce a variety of compounds, but only 2-phenylethanol was synthesized with high yields 95%.


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