INVESTIGATIONS OF THE STRUCTURE ORIENTING ROLE OF ACYCLIC MOLECULES CONTAINING (-OCH2CH2-) GROUPS IN THE SYNTHESIS OF HIGH-SILICA FAUJASITELIKE ZEOLITES

被引：11

作者：

DOUGNIER, F ^{[1
]}

PATARIN, J ^{[1
]}

GUTH, JL ^{[1
]}

ANGLEROT, D ^{[1
]}

机构：

[1] GRL,SOC NATL ELF AQUITAINE,ARTIX,FRANCE

来源：

ZEOLITES | 1993年 / 13卷 / 02期

关键词：

POLY(ETHYLENE OXIDES); FAU STRUCTURE-TYPE ZEOLITE; NMR SPECTROSCOPY; THERMAL ANALYSIS; NH3; STD;

D O I：

10.1016/0144-2449(93)90071-A

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 possible structure-directing role of acyclic (-OCH2CH2-)-containing molecules in the synthesis of faujasitelike zeolites was investigated. FAU silica-rich frameworks were obtained by using tris(3,6-dioxaheptyl)amine (TDA-1) and poly(ethylene oxides) (PEO) with a molecular weight ranging from 2000 to 8000. The solids were characterized by chemical analysis, thermal analysis, and MAS n.m.r. spectroscopy. The Si/Al molar ratios (3.4-3.6) are higher than those of conventional Y zeolite (2.7) but slightly lower than the Si/Al ratio of a FAU zeolite prepared in the presence of 15-crown-5 (3.8). The acid properties of the materials synthesized with PEO 3400, TDA-1, and 15-crown-5 were studied comparatively by NH3 STD.

引用

页码：122 / 127

页数：6

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