Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
2006-07-11
2006-07-11
Johnson, Edward M. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
C502S053000, C502S054000, C208S21600R, C208S217000
Reexamination Certificate
active
07074735
ABSTRACT:
The hydrogenation activity of a heteroatom removal catalyst, having activity for both heteroatom removal and hydrogenation, is selectively suppressed by a treatment which comprises contacting the catalyst with (i) hydrogen, (ii) a selectively deactivating agent that suppresses the catalyst's hydrogenation activity, and (iii) a protective agent, such as CO, that preserves and protects the heteroatom removal activity during the treatment. This may be achieved in a reactor while it is on-line and removing heteroatoms from a hydrocarbon feed.
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Baird Jr. William C.
Brignac Garland B.
Touvelle Michele S.
Bordelon Bruce M.
ExxonMobil Research and Engineering Company
Hughes Gerard J.
Johnson Edward M.
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