Title:
PROCESS FOR PRODUCTION OF CYCLOOLEFIN
Document Type and Number:
WIPO Patent Application WO/2007/023739
Kind Code:
A1
Abstract:
Disclosed is a process for production of a cycloolefin comprising the step of performing the partial hydrogenation of a monocyclic aromatic hydrocarbon with hydrogen in the presence of a ruthenium catalyst, water and a metal sulfate to produce the cycloolefin, wherein the concentration of chlorine ions dissolved in the catalyst-containing water is adjusted to 300 wt ppm or less and the catalyst is partially or entirely regenerated and re-used to prevent the decrease in the activity of the catalyst and the selectivity for a cycloolefin. Preferably, the metal sulfate is zinc sulfate and the raw materials and the catalyst to be used in the reaction are reduced in the chlorine ion content. In the process, the decrease in the activity of the catalyst and the selectivity for a cycloolefin can be prevented for a long period of time. The activity of the catalyst and the selectivity for a cycloolefin after the catalyst regeneration can also be maintained at high levels. Thus, a cycloolefin can be produced with good efficiency over a prolong period of time.
More Like This:
Inventors:
KONISHI MITSUO (JP)
INOUE TERUHIKO (JP)
INOUE TERUHIKO (JP)
Application Number:
PCT/JP2006/316235
Publication Date:
March 01, 2007
Filing Date:
August 18, 2006
Export Citation:
Assignee:
ASAHI KASEI CHEMICALS CORP (JP)
KONISHI MITSUO (JP)
INOUE TERUHIKO (JP)
KONISHI MITSUO (JP)
INOUE TERUHIKO (JP)
International Classes:
C07C5/11; B01J23/46; C07C13/20; C07B61/00
Foreign References:
| JPH08325172A | 1996-12-10 | |||
| JPH08253433A | 1996-10-01 |
Other References:
ASAOKA T.: "Oyo Shokubai Kagaku", 15 May 1969, SANKYO PUBLISHING CO., LTD., pages: 62 - 63, XP003008798
See also references of EP 1921057A4
See also references of EP 1921057A4
Download PDF: