STUDY OF SAPO-5 OBTAINED FROM SURFACTANT-CONTAINING GELS .1. CRYSTALLIZATION PARAMETERS AND MECHANISM OF SI SUBSTITUTION

被引：29

作者：

FRANCO, MJ

MIFSUD, A

PEREZPARIENTE, J

机构：

[1] CSIC,INST CATALISIS & PETROLEOQUIM,E-28049 MADRID,SPAIN

[2] UNIV POLITECN VALENCIA,CSIC,INST TECNOL QUIM,E-46071 VALENCIA,SPAIN

来源：

ZEOLITES | 1995年 / 15卷 / 02期

关键词：

MOLECULAR SIEVE SAPO-5; SYNTHESIS; NMR; SURFACTANTS; CRYSTAL MORPHOLOGY;

D O I：

10.1016/0144-2449(94)00032-N

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 hydrothermal crystallization of SAPO-5 in a biphasic water-hexanol system in the presence of surfactants has been studied. Large crystallite aggregates with a high organic content are obtained by using a high concentration of cationic surfactants in the synthesis. The Si content of crystals is much less affected. Si-29 MASn.m.r, also shows deep modifications of the mechanism of Si incorporation. Neutral or anionic surfactants are uneffective in promoting these changes.

引用

页码：117 / 123

页数：7

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