COMPARISON OF ANALYTICAL TECHNIQUES FOR THE DETERMINATION OF SILICON AND ALUMINUM CONTENT IN ZEOLITES

被引：51

作者：

CORBIN, DR

BURGESS, BF

VEGA, AJ

FARLEE, RD

机构：

[1] DuPont, Wilmington, DE, USA, DuPont, Wilmington, DE, USA

来源：

ANALYTICAL CHEMISTRY | 1987年 / 59卷 / 22期

关键词：

ALUMINUM AND ALLOYS - Measurements - SILICON AND ALLOYS - Measurements - SOLIDS - Spectroscopic Analysis;

D O I：

10.1021/ac00149a019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A study comparing analytical techniques for the determination of Si and Al content of zeolites was conducted. Atomic absorption, neutron activation, and proton inelastic scattering analyses were found to be the most reliable. Data obtained from X-ray fluorescence (XRF), wet chemical, and inductively coupled plasma (ICP) spectrometric analyses showed that alteration in the methodology of these techniques was needed to improve their precision. The Si/Al determination by **2**9Si magic angle spinning nuclear magnetic resonance (MAS-NMR) is complicated by crystallographic imperfections. The percent Al content by **2**7Al MAS-NMR is generally consistent with the other techniques.

引用

页码：2722 / 2728

页数：7

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