APPLICATION OF A PHOTOACOUSTIC SPECTROSCOPIC TECHNIQUE TO A COAPO-44 MOLECULAR-SIEVE

被引：11

作者：

HAN, HS ^{[1
]}

CHON, H ^{[1
]}

机构：

[1] KOREA ADV INST SCI & TECHNOL, DEPT CHEM, TAEJON 305701, SOUTH KOREA

来源：

MICROPOROUS MATERIALS | 1994年 / 3卷 / 03期

关键词：

PHOTOACOUSTIC SPECTROSCOPY; ULTRAVIOLET-VISIBLE PHOTOACOUSTIC SPECTROSCOPY; FOURIER TRANSFORM INFRARED PHOTOACOUSTIC SPECTROSCOPY; COAPO-44;

D O I：

10.1016/0927-6513(94)00031-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A photoacoustic spectroscopic (PAS) technique was applied to obtain depth-resolved information on CoAPO-44 samples by changing the modulation frequency. Photoacoustic (PA) spectra showed the presence of cobalt species with a lower symmetry and of tetrahedral framework cobalt ions. The modulation frequency dependencies showed that cobalt species with a low symmetry were more concentrated in the inner part of the crystallite of as-synthesized samples.

引用

页码：331 / 335

页数：5

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