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OALib Journal期刊
ISSN: 2333-9721
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多元醇一步法制备高碳烃液体燃料的研究
, PP. 820-826
Keywords: 多元醇,高碳烃燃料,氧化还原,氢碘酸
Abstract:
？在较温和的条件下，山梨醇和木糖醇被氢碘酸还原转化为高碳烃液体燃料。产物采用gc-ms和ft-ir进行定量分析与表征，并对高碳烃产品的理化性质进行了测定。结果表明，以山梨醇为原料制备的高碳烃产物主要是包括c12h16、c12h18、c12h20、c12h22和c18h26在内的烷烃、烯烃和芳香烃等化合物，烃类的总产率可达85.1%。以木糖醇为原料的反应过程与山梨醇相似，但所得高碳烃是以c10和c15为主的烃类化合物，产率为62.8%。实验还以质量分数为50%的山梨醇和50%的木糖醇混合物为原料制备了高碳烃，结果发现，产物中除c10、c12、c15和c18烃外，还有一定量的c11烃生成，高碳烃产率为65.4%。反应产物经碱化、旋转蒸发和减压蒸馏后分离得到纯度较高的高碳烃，其含水量低于0.2%，常温下运动黏度为3.15~3.17mm2/s，密度为0.830~0.840g/ml，含氧量为1.8%~2.1%，热值高于43mj/kg。高碳烃的生成是由于多元醇被还原过程中c-i键的极性反转和分子间c-c键的偶联导致。
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