Synthesis and characterization of lanthanum incorporated mesoporous molecular sieves

被引：13

作者：

Pesquera, C

González, F

Blanco, C

Sanchez, L

机构：

[1] Univ Cantabria, Inorgan Chem Grp, Santander 39005, Spain

[2] Univ Cantabria, Mat Sci & Engn Div, Santander 39005, Spain

来源：

APPLIED SURFACE SCIENCE | 2004年 / 238卷 / 1-4期

关键词：

mesoporous sieves; lanthanum incorporation MCM-41; adsorption properties;

D O I：

10.1016/j.apsusc.2004.05.226

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：

A series of mesoporous materials under reflux conditions have been synthesized with two silicon sources (fumed silica and sodium silicate) and lanthanum added. The following Si/La molar ratio was used in the samples: 100; 75; 50 and 25. The calcined products were characterized by means of X-ray diffraction, nitrogen adsorption isotherms and energy dispersive X-ray spectrometry (EDS). The BET surface area gradually decreases with an increase in the lanthanum content of the LaxMCM-41 samples. Moreover, the average pore size tends to decrease along with the increase in the La content in the samples. (C) 2004 Elsevier B.V. All rights reserved.

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页码：320 / 323

页数：4

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