Halogen-containing alumina catalysts prepared from alumina of at

Details Halogen-containing alumina catalysts prepared from alumina of at Halogen-containing alumina catalysts prepared from alumina of at

1985-04-29

1986-04-15

Konopka, P. E.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Halogen or compound containing same

585533, B01J 27125, C07C 202

Patent

active

045828180

ABSTRACT:
A halogen-containing alumina catalyst for the polymerization of olefins to liquid polymers containing a major proportion of polymers having a molecular weight higher than the trimers, said catalyst selectively polymerizing isobutene from a mixture of butenes to produce liquid polyisobutene having a molecular weight higher than about 280; said catalyst containing from about 2 to about 20 wt. % chlorine, bromine or a mixture thereof, and being prepared from an alumina having a purity of at least 99% and a surface area greater than about 150 m.sup.2 /g with at least 10% of the pores having a diameter higher than about 200 .ANG.; said preparation being effected by contacting the alumina with a dry gaseous stream comprising a halogenation agent consisting essentially of volatile chlorinated and/or brominated saturated oliphatic organic compound having a vapor pressure of at least 100 mm of Hg at a temperature of 200.degree.-230.degree. C. and having a low hydrogen content, together with a non-reducing gaseous carrier at a temperature from about 230.degree. to about 300.degree. C. during a period of time t in hours such that the ratio t/R, wherein R is the mole ratio of gaseous carrier to halogenation agent, ranges between about 0.35 and about 20.

REFERENCES:
patent: 3248450 (1966-04-01), Goble
patent: 3268618 (1966-08-01), Fletcher et al.
patent: 3558737 (1971-01-01), Saines
patent: 3607959 (1971-09-01), Estes et al.
patent: 4051017 (1977-09-01), Beaty, Jr.
patent: 4140773 (1979-02-01), Stowell et al.
patent: 4288649 (1981-09-01), McCaulay

Affiliated with

Also associated with

Rating

Halogen-containing alumina catalysts prepared from alumina of at does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Halogen-containing alumina catalysts prepared from alumina of at, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Halogen-containing alumina catalysts prepared from alumina of at will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1439012