| 大港沥青对正戊烷溶剂中卟啉钒化合物的吸附动力学研究 |
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| 引用本文： | 陈菲菲,刘庆敬,孙学文,许志明,赵锁奇.大港沥青对正戊烷溶剂中卟啉钒化合物的吸附动力学研究[J].燃料化学学报,2014,42(2):193-199. |
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| 作者姓名： | 陈菲菲 刘庆敬 孙学文 许志明 赵锁奇 |
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| 作者单位： | State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China |
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| 基金项目： | 国家的“十二五”科技计划（2012BAE05B06）；中国国家自然科学基金会（NSFC）（U1162204，21176254）。 |
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| 摘 要： | 利用静态实验，研究了在正戊烷溶剂中，大港沥青质对卟啉钒模型化合物的吸附动力学，并对吸附机理进行了探讨。通过对吸附卟啉钒化合物前后的大港沥青质进行FT-ICR MS和元素（C/H/N/O）分析，发现大港沥青质上吸附了一定量的卟啉钒化合物。沥青质对卟啉钒的吸附过程受到沥青质的加入量（0.010 0和0.020 0 g）、戊烷溶液中初始卟啉钒的浓度（10和15 μg/mL）以及吸附温度（15、20和25 ℃）等因素的影响。分别采用拟一级、拟二级、Elovich和粒子内扩散等方程对实验数据进行了拟合，结果发现沥青质对卟啉钒的吸附符合拟二级动力学方程。
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| 关 键 词： | 大港沥青质 卟啉钒 吸附动力学 |
| 收稿时间： | 2013-06-22 |
Adsorption kinetics of vanadyl etioporphyrin on Dagang asphaltene in pentane |
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| CHEN Fei-fei,LIU Qing-jing,SUN Xue-wen,XU Zhi-ming,ZHAO Suo-qi.Adsorption kinetics of vanadyl etioporphyrin on Dagang asphaltene in pentane[J].Journal of Fuel Chemistry and Technology,2014,42(2):193-199. |
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| Authors: | CHEN Fei-fei LIU Qing-jing SUN Xue-wen XU Zhi-ming ZHAO Suo-qi |
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| Abstract: | The adsorption kinetics of vanadyl etioporphyrins on Dagang (DG) asphaltene in n-pentane solvent was investigated. The FT-ICR MS and C/H/N/O element analysis results indicated that a certain amount of vanadyl porphyrins can be adsorbed by the DG asphaltene, proving the interactions present between vanadium porphyrins and DG asphaltene. The adsorption process is influenced by the dosage of asphaltene (0.010 0 and 0.020 0 g), the concentration of vanadyl porphyrins in n-pentane (10 and 15 μg/mL), and the adsorption temperature (15、20 and 25 ℃). The overall adsorption rates are fitted by the pseudo-first order, pseudo-second order, Elovich, and diffusion kinetic models, which suggests that the adsorption process can be well described by the pseudo-second order equation. |
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| Keywords: | Dagang asphaltene vanadyl porphyrin adsorption kinetics |
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