SPRAY-DRYING-ASSISTED EVAPORATION-INDUCED SELF-ASSEMBLY TOWARD MESOPOROUS CARBON HOLLOW MICROSPHERES

摘要：

　　A facile and scalable spray-drying-assisted evaporation-induced self-assembly pathway is demonstrated for the synthesis of uniform mesoporous carbon hollow microspheres.In this method,an acidic alcoholic solution containing several molecular precursors and a tri-block copolymer is first sprayed into monodisperse liquid droplets which are then rapidly dried into hybrid microparticles.It is found that a suitable drying temperature (160 °C) and the addition of a silica precursor (tetrarthyl orthosilicate) are the key parameters to get non-sticky hybrid materials with preserved spherical shape as well as highly organised mesostructure.The hybrids are then converted into carbon microspheres with superior physicochemical properties including uniform sizes (~ 60 μm),ordered mesostructure (two-dimensional hexagonal),high surface area (~ 1900 m2/g),large porosity (~ 90 %) and hollow interior,which make them highly promising in adsorption,separation and catalytic processes.

关键词： mesoporous carbon spray drying self-assembly microspheres

作者: Z.Wu W.D.Wu W.Liu C.Selomulya X.D.Chen D.Zhao

作者单位: Department of Chemical Engineering,Faculty of Engineering,Monash University,Wellington Road,Clayton, Department of Chemical and Biochemical Engineering,College of Chemistry and Chemical Engineering,Xia Department of Chemical Engineering,Faculty of Engineering,Monash University,Wellington Road,Clayton,

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-7

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）