Adsorptive desulfurization performances of ordered mesoporous carbons with tailored textural and surface properties. (15th October 2015)

• Record Type: Journal Article
• Authors: Shi, Yawei; Zhang, Xiangwen; Liu, Guozhu
• Is Part Of: Fuel. Volume 158(2015)
• Page Start: 565
• Page End: 571
• Publication Date: 2015-10-15
• Subjects: Ordered mesoporous carbon -- CMK-3 -- Adsorption -- Desulfurization -- Dibenzothiophene; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2015.06.013
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: Small micropores and surface functionalities have been introduced into CMK-3. The modified carbons were used for adsorptive desulfurization. The adsorption of DBT was very fast thanks to the abundant mesopores. The adsorption amount towards DBT was increased by up to 121%. The adsorption amount is depended on both porosity and surface functionalities. Abstract: Both activation and surface oxidation were employed to tailor the textural and surface properties of a typical ordered mesoporous carbon (CMK-3) for better adsorptive desulfurization performance. The amount of small micropores increased dramatically upon activation, while abundant surface functionalities were introduced by surface oxidation. Thanks to the abundant mesopores present in the carbons, a quasi-equilibrium situation for DBT adsorption from model fuels could be reached rapidly in less than 30 min, and the adsorption amounts at 5 min were equal to more than 95% of the equilibrium values. Moreover, the adsorption amount of DBT was increased by up to 121% with the introduction of small micropores and surface functionalities. Further experiments were designed to demonstrate that the adsorption amount is depended on both textural and surface properties.