A SIMS STUDY OF THE INTERACTION OF POTASSIUM CARBONATE WITH CARBON-BLACK

被引：9

作者：

CHANG, JS

LAUDERBACK, LL

FALCONER, JL

机构：

[1] Department of Chemical Engineering, University of Colorado, Boulder

来源：

JOURNAL OF CATALYSIS | 1990年 / 122卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0021-9517(90)90257-K

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：

Secondary ion mass spectrometry combined with isotopic labeling has been applied to study the interaction of potassium carbonate (K2C18O3) with carbon black (13C) at 300-1500 K. The SIMS analysis shows that K2CO3 decomposes above 800 K to form K2O, which subsequently decomposes at 1070 K. A K2O surface species was identified by SIMS at all the temperatures studied. The presence of K2O before K2CO3 thermally decomposes is attributed to the presence of H2O in the original sample, and a model is presented to explain K2O formation. © 1990.

引用

页码：10 / 21

页数：12

共 30 条

[1] DEVELOPMENTS IN SECONDARY ION MASS-SPECTROSCOPY AND APPLICATIONS TO SURFACE STUDIES [J].