SCI和EI收录∣中国化工学会会刊

›› 2014, Vol. 22 ›› Issue (11/12): 1352-1356.DOI: 10.1016/j.cjche.2014.09.017

• 材料与产品工程 • 上一篇    下一篇

Preparation of Silica-Alumina Hollow Spheres with a Single Surface Hole by Co-axial Microchannel

Jinyuan Wang, Yujun Wang, Guangsheng Luo   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2012-12-17 修回日期:2013-03-18 出版日期:2014-12-28 发布日期:2014-12-24
  • 通讯作者: Yujun Wang
  • 基金资助:
    Supported by the National Basic Research Foundation of China (2013CB733600), the National Natural Science Foundation (20976096, 21036002), and the Innovative Science and Technology Foundation of PetroChina (2011D-5006-0407).

Preparation of Silica-Alumina Hollow Spheres with a Single Surface Hole by Co-axial Microchannel

Jinyuan Wang, Yujun Wang, Guangsheng Luo   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2012-12-17 Revised:2013-03-18 Online:2014-12-28 Published:2014-12-24
  • Supported by:
    Supported by the National Basic Research Foundation of China (2013CB733600), the National Natural Science Foundation (20976096, 21036002), and the Innovative Science and Technology Foundation of PetroChina (2011D-5006-0407).

摘要: Si/Al composite hollow spheres with a surface hole were prepared with the co-axial microchannel in a one-step method. It is easy to use the technique for size control and continuous operation. At Si/Al ratio between 4 and 5, a hole forms on the surface, due to the fast gelation process and high viscosity of the sol. Scanning electron microscopy, nitrogen adsorption-desorption isotherms, and mercury intrusion method are used to characterize the samples. The hole size is 40-150 μm and the particle size is 450-600 μm. The size can be adjusted by the flow rate of the oil phase.

关键词: Silica-alumina, Hollow, Single surface hole, Sphere, Microchannel

Abstract: Si/Al composite hollow spheres with a surface hole were prepared with the co-axial microchannel in a one-step method. It is easy to use the technique for size control and continuous operation. At Si/Al ratio between 4 and 5, a hole forms on the surface, due to the fast gelation process and high viscosity of the sol. Scanning electron microscopy, nitrogen adsorption-desorption isotherms, and mercury intrusion method are used to characterize the samples. The hole size is 40-150 μm and the particle size is 450-600 μm. The size can be adjusted by the flow rate of the oil phase.

Key words: Silica-alumina, Hollow, Single surface hole, Sphere, Microchannel