| 用红外光谱法测定饱和烃中亚甲基与甲基的比值 |
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| 引用本文： | 梁文杰,韩淑琴,刘文钦.用红外光谱法测定饱和烃中亚甲基与甲基的比值[J].中国石油大学学报(自然科学版),1987(2). |
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| 作者姓名： | 梁文杰 韩淑琴 刘文钦 |
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| 作者单位： | 华东石油学院炼制系
(梁文杰，韩淑琴)，华东石油学院炼制系(刘文钦) |
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| 摘 要： | 通过对正构烷烃(C_5～C_(16))红外光谱的考察,发现其 1460cm~(-1)及1380cm~(-1)峰的吸光度之比与分子中亚甲基与甲基的比值之间存在着良好的线性关系。借助于方程式 n_(CH_2)/n_(CH_3)=2.93A_(1460)/A_(1380)-3.70,可方便地由红外光谱计算出此比值。此方程式中的常数项表示在1460cm~(-1)峰中甲基与亚甲基的相对贡献。
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| 关 键 词： | 红外光谱法 烷烃 亚甲基 甲基 方程 |
DETERMINATION OF RATIO OF METHYLENE AND METHYL IN PARAFFINIC HYDROCARBONS WITH INFRARED SPECTROSCOPY |
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| Liang Wenjie Han Shuqin Liu Wenqin.DETERMINATION OF RATIO OF METHYLENE AND METHYL IN PARAFFINIC HYDROCARBONS WITH INFRARED SPECTROSCOPY[J].Journal of China University of Petroleum,1987(2). |
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| Authors: | Liang Wenjie Han Shuqin Liu Wenqin |
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| Institution: | Liang Wenjie Han Shuqin Liu Wenqin |
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| Abstract: | The infrared spectra of normal paraffins (C5-C6) were studied. It is found that there is a linear relation-between the ratio of absorptivity of light in 1460cm-1 and 1380cm-1 bands and the ratio of methylene and methyl groups in molecules. By means of the equation nCH2/nCH3=2.93a1460/A1380- 3.7, the ratio can be conveniently calculated from IR spectra. The constant term in this equation stands for the relative contributions of methylene and methyl groups in 1460cm-1 band. |
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| Keywords: | Infrared spectrometry Alkane Methylene Methyl group Equations |
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