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J Colloid Interface Sci. 2018 Mar 1;513:779-787. doi: 10.1016/j.jcis.2017.11.076. Epub 2017 Nov 27.

Ultra-deep adsorptive desulfurization of fuels on cobalt and molybdenum nanoparticles loaded on activated carbon derived from waste rubber.

Author information

1
Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia. Electronic address: http://faculty.kfupm.edu.sa/CHEM/tawfik/.
2
Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
3
Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.

Abstract

The role of cobalt and molybdenum nanoparticles loaded on activated carbon (AC) on the adsorptive desulfurization ability of sulfur-containing compounds was investigated under ambient conditions. The AC was first synthesized and activated, followed by incorporation of the cobalt (Co), molybdenum (Mo) and both Co and Mo nanoparticles. The adsorption activity parameters of the developed composites were determined using surface characterization and N2 physisorption techniques. The prepared composites were evaluated for simultaneous adsorption of sulfur compounds from fuels. The AC/CoMo composite showed better adsorption properties than pure AC, AC/Co and AC/Mo composites for the removal of thiophene (T), benzothiophene (BT), dibenzothiophene (DBT), 5-methyl-1-benzothiophene (MBT), 4,6-dimethyldibenzothiophene (DMDBT) and 4-methyldibenzothiophene (MDBT). The order of the thiophene compounds removal was found to be Thiophene < BT < DBT < MBT ≤ MDBT ≤ DMDBT. The enhanced desulfurization performance of the AC/CoMo composite was attributed to the increase in the surface area achieved through impregnation of both Co and Mo.

KEYWORDS:

Activated carbon; Adsorption; CoMo; Desulfurization

PMID:
29222977
DOI:
10.1016/j.jcis.2017.11.076

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