摘要
通过变温红外技术在293K-393K范围内,在分子水平上考察了温度对于苯甲酸红外光谱及二阶导数红外光谱的影响。结果表明,随着测定温度的增加,苯甲酸νC=O红外吸收光谱的强度下降。室温下,苯甲酸νC=O二阶导数红外光谱存在着3个吸收峰。随着测定温度的增加,3个吸收峰强度有所降低,并进一步研究其形成机理。
The temperature effect of benzoic acid had been studied by FT-IR and second derivative FT-IR in the temperature range from 293 K to 393 K.With the increase of temperature,The strength of the infrared absorption spectrum νC=O declined.There was three infrared absorption peak of νC=O in second derivative FT-IR(rt).With the increase of temperature,the strength of the infrared absorption spectrum νC=O declined,and the formation mechanism was studied further.
关键词
红外光谱
二阶导数红外光谱
苯甲酸
FT-IR Spectrum
second derivative FT-IR Spectrum
benzoic acid.
