THE ROLE OF TRIETHANOLAMINE IN ZEOLITE CRYSTALLIZATION

被引：60

作者：

SCOTT, G

THOMPSON, RW

DIXON, AG

SACCO, A

机构：

[1] Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA

来源：

ZEOLITES | 1990年 / 10卷 / 01期

基金：

美国国家航空航天局;

关键词：

Triethanolamine; zeolite crystallization; zeolite NaA;

D O I：

10.1016/0144-2449(90)90093-7

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 role of triethanolamine (TEA) in zeolite NaA synthesis systems was investigated. Particle-size analyses on products formed in the presence of the amine revealed that TEA affected the nucleation and crystallization rates to some extent. Crystallization studies carried out in reduced aluminum and aluminum-free systems suggested an aluminum complexing role for TEA. The existence of a complex was confirmed by solution-phase 13C n.m.r. spectroscopy. Synthesis studies using close analogs of TEA revealed that all three hydroxyl groups as well as the amine group in TEA were necessary for successful complexation and nucleation suppression. Differential scanning calorimetry carried out on products crystallized in the presence of the amine showed that TEA did not act as a void filler during zeolite NaA crystallization. © 1990.

引用

页码：44 / 50

页数：7

共 14 条

[1] HYDROTHERMAL CHEMISTRY OF SILICATES .9. NITROGENOUS ALUMINOSILICATES [J].