Zeolite based trace humidity sensor for high temperature applications in hydrogen atmosphere

被引：41

作者：

Neumeier, Stefan ^{[1
]}

Echterhof, Thomas ^{[2
]}

Boelling, Ralf ^{[2
]}

Pfeifer, Herbert ^{[2
]}

Simon, Ulrich ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Inorgan Chem, D-52074 Aachen, Germany

[2] Rhein Westfal TH Aachen, Inst Ind Furnaces & Heat Engn, D-52074 Aachen, Germany

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 134卷 / 01期

关键词：

Impedance; Zeolite; Sensor; Humidity; High temperature;

D O I：

10.1016/j.snb.2008.04.022

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We present a humidity sensor based on H-ZSM-5 type zeolite that is suitable to detect traces of humidity (similar to 10-110 ppm(v)) under harsh conditions, e.g. reducing atmosphere (H-2) and high temperature (up to 600 degrees C). By means of complex impedance spectroscopy (IS) we show that the zeolite sensor responds linearly towards minimal changes in humidity. Therefore this result indicates that the zeolite sensor is capable to detect traces of humidity in processes where high temperatures in a hydrogen environment are required. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：171 / 174

页数：4

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