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Search / Korean Journal of Chemical Engineering
Korean Chemical Engineering Research,
Vol.51, No.4, 518-522, 2013
메조기공을 갖는 다양한 금속 산화물 촉매를 이용한 사이클로헥사놀의 탈수소화 반응
Highly Ordered Mesoporous Metal Oxides as Catalysts for Dehydrogenation of Cyclohexanol
이은옥, 김명실, 김지만
사이클로헥사논은 나일론의 단량체로 사용되는 카프로락탐의 원료로 중요한 중간체이며 사이클로헥사놀의 탈수소화 반응을 통해 합성된다. 본 연구에서는 탈수소화 반응에 적용하기 위한 촉매로 다양한 메조기공을 가진 금속 산화물(meso-WO3, meso-TiO2, meso-Fe2O3, meso-CuO, meso-SnO2, meso-NiO)을 나노 복제법에 의해 합성하였다. 그 결과 meso-WO3>>meso-Fe2O3>meso-SnO2>meso-TiO2>meso-NiO>meso-CuO 순서로 촉매 활성이 나타났으며, 그 중 meso-WO3가 가장 높은 촉매 활성을 보임을 알 수 있었다. 따라서 사이클로헥사놀을 이용한 탈수소화 반응에 meso-WO3의 폭넓은 응용 가능성을 확인하였다.
Cyclohexanone is important intermediate for the manufacture of caprolactam which is monomer of nylron. Cyclohexanone is generally produced by dehydrogenation reaction of cyclohexanol. In this study, highly mesoporous metal oxides such as meso-WO3, meso-TiO2, meso-Fe2O3, meso-CuO, meso-SnO2 and meso-NiO were synthesized using mesoporous silica KIT-6 as a hard template via nano-replication method for dehydrogenation of cyclohexanol. The overall conversion of cyclohexanol followed a general order: meso-WO3 >> meso-Fe2O3 > meso-SnO2 > meso-TiO2 > meso-NiO > meso-CuO. In particular, meso-WO3 significantly showed higher activity than the other mesoporous metal oxides. Therefore, the meso-WO3 has wide range of application possibilities for dehydrogenation of cyclohexanol.
Keywords: Dehydrogenation; Cyclohexanone; Mesoporous Metal Oxide; Nano-Replication
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