在线阅读 --自然科学版 2014年1期《天然沥青中2-乙基己醇的分离与形成机理分析》
天然沥青中2-乙基己醇的分离与形成机理分析--[在线阅读]
姚婷1, 杨宏伟1, 郭力1, 温哲2, 宗志敏2
1. 空军勤务学院 航空油料物资系, 江苏 徐州 221006;
2. 中国矿业大学 煤炭加工与高效洁净利用教育部重点实验室及低碳能源研究院, 江苏 徐州 221008
起止页码: 73--77页
DOI: 10.11826/j.issn.1000-5854.2014.01.016
摘要
常温下对克拉玛依天然沥青进行超声辐射萃取,并借助经典柱层析技术,结合GC/MS,FTIR和NMR分析表征手段,从甲醇萃取物中富集到一种化合物,其绝对含量为111mg/g,相对含量为75.82%,经分离纯化鉴定为 2-乙基己醇,同时探讨了甲醇萃取物中产生大量 2-乙基己醇的可能性.经分析可知,2-乙基己醇的出现可能是由于甲醇与天然沥青中某些特定的酯类物质发生了反应,甲醇中的氧进攻酯类中的羰基所致.

Separation and Mechanism Analysis of 2-ethylhexan-1-ol from Natural Bitumen
YAO Ting1, YANG Hongwei1, GUO Li1, WEN Zhe2, ZONG Zhimin2
1. Department of Aviation Oil and Material, Air Force Logistics Institute, Jiangsu Xuzhou 221006, China;
2. Key Laboratory of Coal Processing and Efficient Utilization and Low-carbon Energy Institute, China University of Mining and Technology, Jiangsu Xuzhou 221008, China
Abstract:
The column chromatography is an important technology in fine separation and effectively enriches less compounds in order to provide accurate data and information.In this research, a pure compound was isolated from the methanol-extractable fraction of natural bitumen by column chromatography and had been characterized and analyzed with GC/MS, FTIR and NMR.Meanwhile, the possible route for occurring 2-ethylhexan-1-ol was discussed.The absolute content of 2-ethylhexan-1-ol was 111 mg/g and its relative content was up to 75.82%.It is presumably confirmed the reaction route consisting of that oxygen atom of methanol attacks on the carbonyl carbon to generate 2-ethylhexan-1-ol.

收稿日期: 2013-4-15
基金项目: 国家自然科学基金(50921002);江苏省高校优势学科建设工程项目

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