Process for activating a hydrotreating catalyst

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

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Details

C502S026000, C502S029000, C502S020000, C502S313000

Reexamination Certificate

active

07956000

ABSTRACT:
The invention pertains to a process for activating an hydrotreating catalyst comprising a Group VIB metal oxide and a Group VIII metal oxide which process comprises contacting the catalyst with an acid and an organic additive which has a boiling point in the range of 80-500° C. and a solubility in water of at least 5 grams per liter (20° C., atmospheric pressure), optionally followed by drying under such conditions that at least 50% of the additive is maintained in the catalyst. The hydrotreating catalyst may be a fresh hydrotreating catalyst or a used hydrotreating catalyst which has been regenerated.

REFERENCES:
patent: 4522928 (1985-06-01), McVicker et al.
patent: 5162281 (1992-11-01), Kamo et al.
patent: 5389592 (1995-02-01), Weissman et al.
patent: 6239054 (2001-05-01), Shukis et al.
patent: 0 601 722 (1998-09-01), None
patent: WO 01/02091 (2001-01-01), None
INCHEM.org, “Hexanoic Acid”, [http://www.inchem.org/documents/icsc/icsc/eics1167.html], Mar. 1998.
US Department of Health and Human Services, “Occupational Health Guideline for Oxalic Acid,” Sep. 1978.

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