Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1979-07-19
1981-06-09
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
208216R, 252412, 252414, 423 68, 423150, B01J 2394, B01J 2392, B01J 2120, C10G 2302
Patent
active
042724015
ABSTRACT:
Contacting deactivated hydrodesulfurization catalyst, such as Co-Mo supported on alumina, with a heteropoly acid, such as molybdophosphoric acid or tungstosilicic acid, in pH range of about 1 to 3 and temperature range of about 20.degree. to 80.degree. C., results, before any coke is burned off the catalyst, in selective abstraction of vanadium and nickel, removal of sulfur, increase in surface area, and increase in pore volume of the catalyst. Subsequent cobalt doping of demetallized catalyst followed by calcination promotes decoking, additional sulfur removal and additional increase in surface area and pore volume. The process results in substantially complete regeneration of catalytic activity.
REFERENCES:
patent: 2547380 (1951-04-01), Fleck
patent: 3147209 (1964-09-01), Erickson et al.
patent: 3147228 (1964-09-01), Erickson
patent: 3259588 (1966-07-01), Harvey et al.
patent: 3403111 (1968-09-01), Colgam
patent: 3562150 (1971-02-01), Hamilton et al.
patent: 3635838 (1972-01-01), Gatsis
patent: 3791989 (1974-02-01), Mitchell et al.
patent: 4066574 (1978-01-01), Tamm
Mohan Raam R.
Singhal Gopal H.
Collins D. W.
Corcoran Edward M.
Exxon Research & Engineering Co.
Konopka P. E.
LandOfFree
Regeneration of spent hydrodesulfurization catalyst with heterop does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Regeneration of spent hydrodesulfurization catalyst with heterop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regeneration of spent hydrodesulfurization catalyst with heterop will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1262840