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| 油脂热解生成丙烯醛的途径及规律研究 |
| Way and regularity of acrolein generation from oil pyrolysis |
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| DOI： |
| 中文关键词: 油脂 丙烯醛 脂肪酸 形成规律 |
| 英文关键词:oils and fats acrolein fatty acid formation regularity |
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| 中文摘要: |
| 考察了油脂降解产物——甘油和脂肪酸受热降解生成丙烯醛的情况及其生成丙烯醛的途径。结果表明：在175℃加热条件下，甘油每小时生成丙烯醛平均量为106.95 μg/kg，棕榈酸为551.33 μg/kg，硬脂酸为263.23 μg/kg，油酸为34 795.96 μg/kg，亚油酸为24 395.15 μg/kg；油脂热解生成的丙烯醛主要来自于脂肪酸的分解而非甘油，且不饱和脂肪酸生成丙烯醛的量远远高于饱和脂肪酸的；甘油主要通过脱水生成丙烯醛，饱和脂肪酸主要由于碳链在高温下断裂生成丙烯醛，而不饱和脂肪酸生成丙烯醛则是通过氧化，继而发生夺氢反应生成烯丙自由基，进一步断裂得到丙烯醛。 |
| 英文摘要: |
| The way and regularity of the generation of acrolein degraded by glycerol and fatty acids at high temperature were studied. The results showed that the average generation quantities of acrolein from glycerol，palmitic acid，stearic acid，oleic acid and linoleic acid were 106.95，551.33，263.23，34 79596，24 395.15 μg/kg respectively. The acrolein formed by oil pyrolysis mainly came from the decomposition of fatty acids instead of glycerol. Unsaturated fatty acids were easier to generate acrolein than saturated fatty acids. The acrolein generated from glycerol was mostly on the basis of dehydration. Saturated fatty acids’ long carbon chain broke at high temperature to form acrolein，while unsaturated fatty acids generated allyl radicals through oxidation and hydrogen abstraction reaction，which could further break into acrolein. |
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