کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9685026 | 1456220 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of the carrier saturation in facilitated transport of unsaturated hydrocarbons
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
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چکیده انگلیسی
Single-component facilitated transports of ethylbenzene, styrene, cyclohexene and 1-hexene were carried out using the feed concentrations ranging from 0.5Â M to pure. Equilibrium constants of the Ag+-solute complex formation, determined by distribution method, were 0.7, 2.2, 32.0, 129.1Â Mâ1, respectively. Carrier saturation was not found with the membrane incorporated with 2.67Â M Ag+-ion. As the carrier concentration was reduced to 0.51Â M, increase in the feed concentration beyond 4.5Â M had very little effect on ethylbenzene flux, suggesting the onset of carrier saturation. Styrene and cyclohexene underwent the carrier saturation when the carrier loading was 0.25Â M, while a complete saturation was not observed with 1-hexene. Extraction of solute from the membranes revealed that less than 50% of Ag+-ions were occupied when the carrier saturation occurred. It was also found that the ability of solute to use available Ag+-ions in the membrane was dependent on the equilibrium constant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 250, Issues 1â2, 15 March 2005, Pages 277-282
Journal: Journal of Membrane Science - Volume 250, Issues 1â2, 15 March 2005, Pages 277-282
نویسندگان
Porntip Luangrujiwong, Anawat Sungpet, Ratana Jiraratananon, J. Douglas Way,