Reactivation of hydrocarbon isomerization catalysts

Details Reactivation of hydrocarbon isomerization catalysts Reactivation of hydrocarbon isomerization catalysts

1995-12-06

1998-01-06

McAvoy, Ellen M.

Chemistry of hydrocarbon compounds

Saturated compound synthesis

By isomerization

502 53, B01J 2034, C07C 513

Patent

active

057057311

ABSTRACT:
In a process for isomerizing C.sub.4 -C.sub.7 alkanes and/or C.sub.6 -C.sub.7 cycloalkanes which is carried out in the presence of hydrogen gas, a chloride additive (e.g., CCl.sub.4 or C.sub.2 Cl.sub.4) and a supported platinum and chlorine-containing catalyst (e.g., Pt/Cl/Al.sub.2 O.sub.3), the catalyst is intermittently reactivated in two steps: first, the hydrogen to feed hydrocarbon ratio is raised (while the chloride level in the feed is either not changed or lowered), and thereafter the chloride level in the feed is increased. Preferably, the fresh catalyst is also preactivated by contacting it with the hydrocarbon feed wherein the hydrogen to feed hydrocarbon ratio is higher and/or the temperature is lower than what is employed in the subsequent isomerization production cycle.

REFERENCES:
patent: 2583740 (1952-01-01), Kemp
patent: 3248320 (1966-04-01), White et al.
patent: 3527715 (1970-09-01), Gianetti et al.
patent: 3551516 (1970-12-01), Ashley et al.
patent: 3789082 (1974-01-01), Cook et al.
patent: 3903195 (1975-09-01), Franch et al.
patent: 4039604 (1977-08-01), Myers et al.
patent: 4835129 (1989-05-01), Travers et al.
patent: 5039639 (1991-08-01), Khara
patent: 5212128 (1993-05-01), Schorfheide et al.
patent: 5306681 (1994-04-01), Schorfheide et al.
patent: 5463166 (1995-10-01), Lin
patent: 5654247 (1997-08-01), Lin et al.

Affiliated with

Also associated with

Rating

Reactivation of hydrocarbon isomerization catalysts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reactivation of hydrocarbon isomerization catalysts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactivation of hydrocarbon isomerization catalysts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2330763