Large-Pore Cage like Silica with Necks of Molecular Dimensions

被引：10

作者：

Morishige, Kunimitsu ^{[1
]}

Yasuki, Tsubasa ^{[1
]}

机构：

[1] Okayama Univ Sci, Dept Chem, Kita Ku, Okayama 7000005, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 24期

关键词：

STRUCTURE-DIRECTING AGENTS; MESOPOROUS SILICA; ADSORPTION; SIZE; COPOLYMER; CATALYSTS; NITROGEN; SYSTEMS; SIEVES; SBA-2;

D O I：

10.1021/jp102727x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The neck size of five kinds of FDU-12 silicas prepared without and with the hydrothermal treatment at low temperatures was assessed by examining the molecular sieving effect for several different molecules. The results clearly indicate that the ordered silicas with cagelike pores thus obtained possess necks of molecular dimensions, and the size of the necks available for molecular sieving is increased with an increase in the hydrothermal treatment temperature. The molecular sieving effect of the cagelike silica is discussed based on bond-controlled percolation.

引用

页码：10910 / 10916

页数：7

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