Monitoring coal-tar pitch composition changes during air-blowing by gas chromatography.
Monitoring coal-tar pitch composition changes during air-blowing by gas chromatography.
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DOI：
10.1016/j.chroma.2003.11.067
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发表时间：
2004-02
期刊：
影响因子：
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通讯作者：
A. Domínguez;C. Blanco;R. Santamaría;M. Granda;C. Blanco;R. Menéndez
中科院分区：
文献类型：
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作者：
A. Domínguez;C. Blanco;R. Santamaría;M. Granda;C. Blanco;R. Menéndez
为了更深入地了解煤沥青在空气吹炼过程中不同组分的行为，对一系列空气吹炼煤沥青进行了GC和GC-MS研究。对存在于母沥青中的化合物进行鉴定和定量，然后与存在于空气吹制沥青中的化合物进行比较。处理前后观察到的化合物相同，但每种化合物的浓度随着处理而发生不同程度的变化，具体取决于其分子结构以及其对氧气的反应性。最具反应性的化合物是那些在五元环中具有亚甲基桥的化合物，其次是那些在其结构中具有甲基的化合物。
A series of air-blown coal-tar pitches was studied by GC and GC-MS in order to achieve a deeper understanding of the behaviour of the different pitch components during air-blowing. Compounds present in the parent pitch were identified and quantified and then compared to those present in the air-blown pitches. The compounds observed were identical before and after the treatments, but the concentration of each compound changed with the treatment to a different extent depending on its molecular structure and consequently its reactivity to oxygen. The most reactive compounds were those with a mehylene-bridge in a five member ring, followed by those with a methyl group in their structure.