Desulfurization of Diesel Fuels by Adsorption via π-Complexation with Vapor-Phase Exchanged Cu(I)−Y Zeolites

Arturo J. Hernández-Maldonado and Ralph T. Yang*
Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136
J. Am. Chem. Soc., 2004, 126 (4), pp 992–993
DOI: 10.1021/ja039304m
Publication Date (Web): January 9, 2004
Copyright © 2004 American Chemical Society
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, yang@umich.edu

Abstract

Abstract Image

Desulfurization of a commercial diesel fuel by vapor-phase ion exchange (VPIE) copper(I) faujasite zeolites was studied in a fixed-bed adsorber operated at ambient temperature and pressure. The zeolite adsorbed approximately five thiophenic molecules per unit cell. After treating 18 cm3 of fuel, the cumulative average sulfur concentration detected was 0.032 ppmw-S. GC−FPD results showed that the π-complexation sorbents selectively adsorbed highly substituted thiophenes, benzothiophenes, and dibenzothiophenes from diesel, which is not possible by using conventional hydrodesulfurization (HDS) reactors. The high sulfur selectivity and high sulfur capacity of the VPIE Cu(II)−zeolites were due to π-complexation.

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History

  • Published In Issue February 04, 2004
  • Received October 29, 2003

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