期刊
CHEMICAL ENGINEERING JOURNAL
卷 303, 期 -, 页码 489-500出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.06.005
关键词
Al-doped AC; Dibenzothiophene; Enhanced desulfurization; Regeneration
资金
- King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM), Saudi Arabia, National Science, Technology and Innovation Plan [13-PET393-04]
The influence of aluminium concentrations (0.05-10 wt.%) in activated carbon (AC) on the comparative improvement of the adsorbent materials for adsorptive desulfurization of dibenzothiophene (DBT) in isooctane at room temperature was studied. The adopted extensive spectroscopic and N-2 physiosorption techniques revealed the physicochemical properties of the developed adsorbents, which were associated with the estimated adsorption activity parameters. The Al-incorporated AC samples showed better adsorption properties than the pure AC such that a maximum adsorption capacity of 95% in 200 ppmS compound (as in dibenzothiophene, DBT) was obtained for AC-Al-2.5 wt.% adsorbent. The enhanced desulfurization of DBT was associated with the tetrahedral coordination of Al in AC-Al composite. The adsorption of DBT onto AC-Al-2.5 wt.% followed pseudo second order kinetics and was best-fit by Freundlich isotherm. Furthermore, the spent adsorbent possessed good regeneration potential for further desulfurization cycles with adsorption capacity similar to that of a fresh adsorbent. (C) 2016 Elsevier B.V. All rights reserved.
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