title: New method for the preparation of nonuniform distributed Co/SiO2 catalysts.
abstract: Egg-shell, egg-yolk and egg-white types of Co/SiO2 catalysts were prepared by utilizing entrapped air to inhibit the entrance of impregnation or leaching solution into the cores of catalyst pellets during the preparation procedure; the entrapped air played the important role because the capillary pressure was reduced to a suitable range by adjusting the concentration of ethanol in the impregnation or leaching solution for a hydrophobized silica surface.
authors.affiliation: Laboratory of Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China.
authors.forename: Jingwei
authors.initials: J
authors.lastname: Li
authors.forename: Yunjie
authors.initials: Y
authors.lastname: Ding
authors.forename: Xianming
authors.initials: X
authors.lastname: Li
authors.forename: Guiping
authors.initials: G
authors.lastname: Jiao
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Weimiao
authors.initials: W
authors.lastname: Chen
authors.forename: Hongyuan
authors.initials: H
authors.lastname: Luo