Microporosity of SBA-3 mesoporous molecular sieves

被引：51

作者：

Chen, FX

Xu, XJ

Shen, SC

Kawi, S

Hidajat, K

机构：

[1] Inst Chem & Engn Sci, Dept Appl Catalysis, Singapore 627833, Singapore

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Natl Univ Singapore, Dept Chem & Environm Engn, Singapore 119260, Singapore

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2004年 / 75卷 / 03期

关键词：

SBA-3; microporosity; synthesis; alpha(s) plot;

D O I：

10.1016/j.micromeso.2004.07.028

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Evidences indicating the presence of micropores in SBA-3 are presented in this work. These include (1) large low-pressure adsorbed volume of liquid N-2 (e.g., 0.20 cm(3)/g at 0.001 P/P-0); (2) selective blocking of micropores by TEOS grafting; (3) evaluation of micropore volume (0.015 cm(3)/g) and micropore surface area (135 m(2)/g) from the alpha(s)-plot method; (4) geometric consideration: w(d)S/V = 5.1; (5) two-step adsorption/desorption processes of n-heptane vapor on SBA-3. As a result of the presence of these micropores in the silica wall of SBA-3, it can serve as a template to produce ordered carbon replicas. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：231 / 235

页数：5

共 18 条

[1] Coupling X-ray scattering and nitrogen adsorption: An interesting approach for the characterization of ordered mesoporous materials. Application to hexagonal silica [J].