CAJ | 학술논문

采用FeSO4·7H2 O单一铁源,用改进的化学共沉淀法制备了四方体纳米Fe3 O4粒子.以十六烷基三甲基溴化铵( CTAB)为模板,通过溶胶-凝胶法制备了介孔二氧化硅包覆的Fe3 O4纳米磁性粒子.以羰基镍( NTC)为镍源,制备磁性负载型金属镍催化剂Ni/MFe3 O4( mesoporous Fe3 O4).利用透射电子显微镜( TEM)、选区电子衍射花样( SAED)、X线衍射分析( XRD)、X射线光电子能谱( XPS)、振动磁强计( VSM)等手段对催化剂进行表征.结果表明,Ni/MFe3 O4催化剂具有良好的催化活性.采用Ni/MFe3 O4催化加氢9-苯蒽,9-环己基十四氢蒽的收率可达87.6%.
채용FeSO4·7H2 O단일철원,용개진적화학공침정법제비료사방체납미Fe3 O4입자.이십륙완기삼갑기추화안( CTAB)위모판,통과용효-응효법제비료개공이양화규포복적Fe3 O4납미자성입자.이탄기얼( NTC)위얼원,제비자성부재형금속얼최화제Ni/MFe3 O4( mesoporous Fe3 O4).이용투사전자현미경( TEM)、선구전자연사화양( SAED)、X선연사분석( XRD)、X사선광전자능보( XPS)、진동자강계( VSM)등수단대최화제진행표정.결과표명,Ni/MFe3 O4최화제구유량호적최화활성.채용Ni/MFe3 O4최화가경9-분은,9-배기기십사경은적수솔가체87.6%.
By using FeSO4·7H2 O as a single iron source,with the help of ammonium hydroxide as the precipitating agent,a uniform size of cubic Fe3 O4 nanoparticles are prepared by the improved chemical co-precipitation method. The mesoporous Fe3 O4 is prepared by a sol-gel method,which is fabricated by using CTAB as template. The Ni/mesoporous Fe3 O4 catalyst is prepared by decomposing NTC on mesoporous Fe3O4. The crystalline structure,morphology and magnetic property of Ni/MFe3 O4 are characterized by transmission electron microscopy( TEM) ,selected area electron diffraction( SAED) ,X-ray diffraction(XRD),X-ray Photoelectron Spectroscopy(XPS),and vibrating magnetometer(VSM). The results indicate that the Ni/MFe3 O4 catalyst is highly active. The 9-phenylanthracene can be completely converted into 9-cyclohexyltetradeca-hydro anthracene over Ni/MFe3 O4 catalyst,and the conversions of 9-phenylanthracene is up to 86.7%.