化工学报 ›› 2010, Vol. 61 ›› Issue (9): 2373-2378.
• 催化、动力学与反应器 • 上一篇 下一篇
王文昊，陈胜利，周政
出版日期:
发布日期:
WANG Wenhao，CHEN Shengli，ZHOU Zheng
Online:
Published:
摘要：
利用单分散二氧化硅微球的水悬浮液，在一定条件下蒸发自组装合成了孔径均一的SiO2载体。采用低温氮吸附、压汞、SEM表征其孔结构及表面形态。结果表明，对于300 nm以下的单分散微球，都可以利用蒸发组装得到孔径均一的载体材料，且孔径尺寸可根据微球大小调变。实验发现蒸发组装制备的载体，其孔径分布受蒸发温度的影响较大。通过对蒸发温度的考察，发现50℃蒸发组装的样品孔径分布集中有序。
关键词: 均一孔径, SiO2催化剂载体, 蒸发组装
均一孔径,
Abstract:
Silica support materials with different and uniform pore size were fabricated by ordered-packing of monodisperse SiO2 spheres through evaporation assembling method.The pore structure was characterized with low temperature N2 adsorption-desorption method，mercury porosimeter and SEM.The results showed that the SiO2 spheres were closely and orderly packed with face centered cubic packing structure in the silica materials with uniform pore sizes.This method is especially appropriate for the assembling of small size（D<300 nm)SiO2 microspheres，and the assembly time is about 7 d.It is found that the uniformity of pore sizes of silica materials is affected by assembly condition and the optimal temperature of assembling opal is 50℃.
Key words: 均一孔径, SiO2催化剂载体, 蒸发组装
王文昊, 陈胜利, 周政. 均一孔径SiO2催化剂载体的制备 [J]. 化工学报, 2010, 61(9): 2373-2378.
WANG Wenhao, CHEN Shengli, ZHOU Zheng. Preparation of silica catalyst support with uniform pore sizes[J]. CIESC Journal, 2010, 61(9): 2373-2378.
0 / / 推荐
导出引用管理器 EndNote|Ris|BibTeX
链接本文: https://hgxb.cip.com.cn/CN/
https://hgxb.cip.com.cn/CN/Y2010/V61/I9/2373
京公网安备 11010102001995号
