Tailoring of surface oxygen-containing functional groups and their effect on adsorptive denitrogenation of liquid hydrocarbons over activated carbon
Na Li1, Jian Zhu1,*(朱健), Xiaoliang Ma2,3,*（马筱良）,Qingfang Zha4, Chunshan Song2
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, China
2EMS Energy Institute, Dept. of Energy and Mineral Engineering, The Pennsylvania State University, University Park, PA
3Petroleum Research & Studies Center, Kuwait Institute for Scientific Research, Safat, Kuwait
4College of Chemical Engineering, China University of Petroleum, Qingdao, Shandong, China
AIChE J. 2013, 59, 1236–1244.
The objective of this study is to get a fundamental understanding of role of surface oxygen-contained functional groups (OCFG) in adsorptive denitrogenation (ADN) of liquid hydrocarbons over activated carbon, and thus to improve the ADN performance of activated carbon through modification of surface chemistry of activated carbon. A set of activated carbon samples with different amount and distribution of OCFG was prepared by oxidative modification and thermal treatment of a commercial activated carbon. The prepared activated carbons were characterized by the temperature-programmed desorption coupled with mass spectrometry for the concentration of various OCFG, and evaluated in a fixed-bed adsorption system using a model fuel containing aniline, indole, quinoline, carbazole, and ethyl-carbazole. The results indicate that OCFG, especially the strong carboxyls, weak carboxyls and anhydrides, play a crucial role in determining the adsorptive performance of activated carbon for selective removal of nitrogen compounds from liquid hydrocarbons. The adsorption mechanism of the nitrogen compounds over activated carbon was discussed on the basis of the structure-performance correlation and the molecular simulation. © 2012 American Institute of Chemical Engineers AIChE J, 59: 1236–1244, 2013
链接： //onlinelibrary.wiley.com/doi/10.1002/aic.13886/abstract
