Diffuse reflectance infrared (DRIFTS) and mass spectrometry study of thermal stability of aluminophosphate oxynitrides (AlPON)

被引：18

作者：

Benitez, JJ

Diaz, A

Laurent, Y

Grange, P

Odriozola, JA

机构：

[1] UNIV SEVILLA,CSIC,INST CIENCIA MAT SEVILLA,E-41080 SEVILLE,SPAIN

[2] UNIV RENNES 1,LAB CHIM MAT,URA 1496 CNRS,F-35042 RENNES,FRANCE

[3] UNIV CATHOLIQUE LOUVAIN,UNITE CATALYSE & CHIM MAT DIVISES,B-1348 LOUVAIN,BELGIUM

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1997年 / 202卷

关键词：

aluminophosphate oxynitrides (AlPON); diffuse reflectance infrared spectroscopy (DRIFTS);

D O I：

10.1524/zpch.1997.202.Part_1_2.021

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：

Aluminophosphate oxynitrides (AIPON) are new materials showing a very interesting catalytic behaviour. In their synthesis, impregnation and calcination stages are involved. AIPON suffers surface hydrolysis and moderate thermal decomposition. We have analysed the influence of temperature combining diffuse reflectance (DRIFTS) and mass spectrometry. Nitrogen is eliminated as NH3 in two stages. The first one, at low temperature (100-130 degrees C), is accompanied by water and corresponds to NH3 desorption from Lewis and Bronsted sites. The second stage at 330 degrees C is due to terminal (-NH2) removal upon reaction with water.

引用

页码：21 / 29

页数：9

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