硅负载离子液体的合成、表征以及其催化甲酸和三乙基胺作为氢源的环己酮还原胺化反应（英文）  

Synthesis, characterization,and application of silica supported ionic liquid as catalyst for reductive amination of cyclohexanone with formic acid and triethyl amine as hydrogen source

作　　者：Ashif H.Tamboli Avinash A.Chaugule Faheem A.Sheikh Wook-Jin Chung Hern Kim 

机构地区：[1]Department of Energy Science and Technology,Energy and Environment Fusion Technology Center,Myongji University

出　　处：《催化学报》2015年第8期1365-1371,共7页

基　　金：supported by the National Research Foundation of Korea(NRF)–Grants funded by the Ministry of Science,ICT and Future Planning(2014R1A2A2A01004352);the Ministry of Education(2009-0093816),Republic of Korea

摘　　要：A silica supported ionic liquid was synthesized and characterized by scanning electron microscopy(SEM), Fourier transform infrared spectroscopy, X-ray diffraction, N2 adsorption-desorption, and thermogravimetric analysis. All these techniques, especially SEM results indicated the presence of well-defined spherical particles having diameters larger than the pristine silica particles, confirming the successful immobilization of the ionic liquid. The prepared silica supported ionic liquid was used in the reductive amination of cyclohexanone under different conditions with different azeotropic mixtures of formic acid and triethyl amine as a hydrogen source. The catalyst showed efficient catalytic performance and excellent yields of N-cyclohexyl amine derivatives in the range of 58% to 84% at 30 °C. After completion of the reaction, the catalyst was easily recovered by simple filtration and reused for another five cycles without any significant impact on product yields. The obtained catalytic performance indicates that the present catalyst is green, very active, and reusable for the reductive amination of cyclohexanone.A silica supported ionic liquid was synthesized and characterized by scanning electron microscopy（SEM）, Fourier transform infrared spectroscopy, X-ray diffraction, N2 adsorption-desorption, and thermogravimetric analysis. All these techniques, especially SEM results indicated the presence of well-defined spherical particles having diameters larger than the pristine silica particles, confirming the successful immobilization of the ionic liquid. The prepared silica supported ionic liquid was used in the reductive amination of cyclohexanone under different conditions with different azeotropic mixtures of formic acid and triethyl amine as a hydrogen source. The catalyst showed efficient catalytic performance and excellent yields of N-cyclohexyl amine derivatives in the range of 58% to 84% at 30℃. After completion of the reaction, the catalyst was easily recovered by simple filtration and reused for another five cycles without any significant impact on product yields. The obtained catalytic performance indicates that the present catalyst is green, very active, and reusable for the reductive amination of cyclohexanone.

关 键 词：离子液体催化剂 还原胺化 硅胶负载 环己酮 三乙胺 合成 氢源 甲酸 

分 类 号：O621.251[理学—有机化学]