Synthesis of spherical SBA-15 mesoporous silica. Influence of reaction conditions on the structural order and stability

被引：32
|
作者：
Ivan Melendez-Ortiz, H. [1 ]
Puente-Urbina, Bertha [1 ]
Castruita-de Leon, Griselda [1 ]
Manuel Mata-Padilla, Jose [1 ]
Garcia-Uriostegui, Lorena [2 ]
机构：
[1] Ctr Invest Quim Aplicada, Blvd Enrique Reyna Hermosillo 140, Saltillo 25294, Coahuila, Mexico
[2] Univ Guadalajara, DMCyP, Zapopan 45020, Jalisco, Mexico
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 06期
关键词：
Spherical SBA-15; Hydrothermal synthesis; Structural stability; Mesoporous material; SURFACE-AREA; ADSORPTION; NANOPARTICLES; BEHAVIOR; REMOVAL; CARBON; PORES; OXIDE;
D O I：
10.1016/j.ceramint.2016.01.163
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structural order and stability of spherical SBA-15 silicas synthesized under acid conditions were evaluated as a function of surfactant Pluronic 123 (P123), tetraethyl orthosilicate (TEOS), and hydrochloric acid (HCl) concentrations in the initial gel composition. Also, the effect of temperature and reaction time was studied. Samples were characterized by small angle X-ray diffraction (SAXS), nitrogen adsorption desorption analyses, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that synthesis conditions affect the structural order and stability of the SBA-15 silicas. These silicas exhibited an ordered pore structure and regular spherical morphology with size from 2 to 5 p.m. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：7564 / 7570
页数：7
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