Catalyst composition comprising acid-base leached zeolites

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By dealkylation

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

585470, 585476, 585486, 585488, 585489, 208135, C07C 412, C10G 35095

Patent

active

061334944

ABSTRACT:
A catalyst composition and a process for hydrodealkylating C.sub.9 + aromatic compounds such as, for example, trimethylbenzenes, to C.sub.6 to C.sub.8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The composition comprises an alumina and a silica wherein the weight ratio of aluminum to silicon is in the range of from about 0.005:1 to about 0.25:1. The process comprises contacting, in the presence of the catalyst composition, a fluid which comprises a C.sub.9 + aromatic compound with a hydrogen-containing fluid under a condition sufficient to effect the conversion of a C.sub.9 + aromatic compound to a C.sub.6 to C.sub.8 aromatic hydrocarbon; and the C.sub.9 + aromatic compound contains at least 9 carbon atoms. Also disclosed is a process for producing the catalyst composition which comprises: (1) contacting a zeolite with an effective amount of a base under a condition sufficient to effect a reduction in silicon content of said zeolite to produce a base-leached zeolite; and (2) contacting said base-leached zeolite with an effective amount of an acid under a condition sufficient to effect a reduction in aluminum content of said base-leached zeolite.

REFERENCES:
patent: 4188282 (1980-02-01), Tabak et al.
patent: 4224141 (1980-09-01), Morrison et al.
patent: 4351979 (1982-09-01), Chester et al.
patent: 4385195 (1983-05-01), Butter et al.
patent: 4568655 (1986-02-01), Oleck et al.
patent: 5001296 (1991-03-01), Howley et al.
patent: 5030787 (1991-07-01), Absil et al.
patent: 5160500 (1992-11-01), Chu et al.
patent: 5800696 (1998-09-01), Drake et al.
patent: 5804059 (1998-09-01), Wu et al.
patent: 5827422 (1998-10-01), Drake et al.
patent: 5866744 (1999-02-01), Wu et al.
patent: 5905051 (1999-05-01), Wu et al.
patent: 5922630 (1999-07-01), Wu et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Catalyst composition comprising acid-base leached zeolites does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst composition comprising acid-base leached zeolites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst composition comprising acid-base leached zeolites will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-470894

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.