TG/FT-IR - AN ANALYSIS OF THE CONDITIONS AFFECTING THE COMBINED TG/SPECTRAL RESPONSE

被引:20
|
作者
BERBENNI, V [1 ]
MARINI, A [1 ]
BRUNI, G [1 ]
ZERLIA, T [1 ]
机构
[1] STN SPERIMENTALE & COMBUSTIBILI,I-20097 SAN DONATO MILANE,ITALY
关键词
CYCLODEXTRIN; DTG; FT-IR; GRAM-SCHMIDT; TGA;
D O I
10.1016/0040-6031(94)02237-I
中图分类号
O414.1 [热力学];
学科分类号
摘要
The results of TG/FT-IR measurements performed on hydrated beta-cyclodextrin at different heating rates and with different carrier gas fluxes are reported. Tt is shown that the shape of the spectral curve (either Gram-Schmidt reconstruction or integrated specific absorbance) and its degree of matching with the DTG curve depend on both the TG heating rate and the carrier gas flow rate. Namely, it is the relative rate of the reaction and of the TG purging that determines the spectral response. The results obtained are wholly accounted for by utilizing a simple ''dispersive'' definition, as recently proposed by us, for the ''relative intensity'' of the spectral curve.
引用
收藏
页码:125 / 133
页数:9
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