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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Terpyridine-Pr-Fe3O4@boehmite nanoparticles; a novel and highly effective magnetic nanocatalyst for preparation of cyclic carbonates from carbon dioxide and epoxides under solventless conditions

2020년 9월 18일 13시 56분 53초
ORGN.P-411 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 21일(수) 17:30~18:00
Organic Chemistry
저자 및
Faisal Muhammad, Aamer Saeed*
Organic chemistry, Quaid-i-Azam University, Pakistan
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승인 1건

In this research work, moisture- and air-stable terpyridine-mediated magnetic boehmite (terpyridine-Pr-Fe3O4@boehmite)nanocatalyst was fabricated and applied for the synthesis of cyclic carbonates. The nanocatalyst was constructed by very simple process using commercially available starting materials and fully characterized through various techniques including FT-IR, VSM, SEM, TGA, N2 adsorption-desorption isotherm, elemental analysis and leaching test. The characterizations results suggested the superparamagnetic nature of the Fe3O4 nucleus encapsulated by a boehmite nanoparticles shell. Further, nanoparticles could be used safety in organic reactions owing to large thermal stability of around 300 °C and can be applicable under strong acidic and basic reaction conditions. Additionally, the nanoparticles were of hexagonal like shape, uniformly distributed and much uniform in size, with an average size about 50 nm. Terpyridine-Pr-Fe3O4@boehmite nanoparticles were applied as nano-catalyst for the synthesis of cycliccarbonates form the cycloaddition coupling reaction of carbon dioxide with epoxides under solvent-less conditions. The cost-effective nano-catalyst tolerated a broad variety of functional groups. The one-pot and practical procedure offers numerous benefits such as good to excellent yields, environment-friendliness,low catalyst loading and operational simplicity. Additionally, the durability of catalyst was investigated and observed that the catalyst is stable under there action conditions and could be isolated easily from the reaction content by using a bar magnet and reused for several consecutive cycles without any important loss of catalytic potency.