Isomerization of n-Pentane Catalyzed by Acidic Chloroaluminate Ionic Liquids
Isomerization of n-Pentane Catalyzed by Acidic Chloroaluminate Ionic Liquids
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DOI：
10.1021/ie801013j
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发表时间：
2008-10
影响因子：
4.2
通讯作者：
Rui Zhang;X. Meng;Zhichang Liu;Jiaying Meng;Chunming Xu
中科院分区：
文献类型：
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作者：
Rui Zhang;X. Meng;Zhichang Liu;Jiaying Meng;Chunming Xu
异构化油由于在车用汽油中芳烃和烯烃（高辛烷值成分）含量的法定降低而成为重要的车用汽油调合组分。离子液体Et3NHCl−AlCl3 （AlCl3的摩尔分数为0.67）对正戊烷异构化表现出良好的催化性能。随着反应温度、反应时间和催化剂/油体积比（C/O）的提高，正戊烷的转化率提高，异构化油的收率降低，异烷烃的选择性降低。最佳反应温度为30℃，反应时间为3 h， C/O比为1:1。在最佳反应条件下，正戊烷转化率为44.61 wt %，异构油收率为96.07 wt %，异链烷烃选择性为90.52%。正戊烷的高转化率有利于不经正戊烷循环的异构化油辛烷值的提高，而正戊烷的低转化率则有利于异构化油辛烷值的提高。
Isomerization oil becomes an important motor gasoline blending component due to increased statutory reduction of aromatics and olefins (high octane number components) contents in motor gasoline. The ionic liquid Et3NHCl−AlCl3 (mole fraction of AlCl3 is 0.67) shows good catalytic performance for the isomerization of n-pentane. The conversion of n-pentane increases with the enhancement of reaction temperature, reaction time, and catalyst/oil volume ratio (C/O ratio), while the yield of isomerization oil and the selectivity of isoparaffins decrease. The optimal reaction temperature, reaction time, and C/O ratio are 30 °C, 3 h, and 1:1, respectively. Under the optimal reaction conditions, the conversion of n-pentane, the yield of isomerization oil, and the selectivity of isoparaffins are 44.61 wt %, 96.07 wt %, and 90.52%, respectively. High conversion of n-pentane favors the octane number improvement of isomerization oil without the circulation of n-pentane, while low conversion of n-pentane is preferential ...