Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2006-08-22
2006-08-22
Dang, Thuan D (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S213000
Reexamination Certificate
active
07094333
ABSTRACT:
A method for removing thiophene and thiophene compounds from liquid fuel includes contacting the liquid fuel with an adsorbent which preferentially adsorbs the thiophene and thiophene compounds. The adsorption takes place at a selected temperature and pressure, thereby producing a non-adsorbed component and a thiophene/thiophene compound-rich adsorbed component. The adsorbent includes either a metal or a metal cation that is adapted to form π-complexation bonds with the thiophene and/or thiophene compounds, and the preferential adsorption occurs by π-complexation. A further method includes selective removal of aromatic compounds from a mixture of aromatic and aliphatic compounds.
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Hernandez-Maldonado Arturo J.
Takahashi Akira
Yang Frances H.
Yang Ralph T.
Dang Thuan D
Dierker and Associates, P.C.
The Regents of the University of Michigan
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