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    • 2. 发明申请
    • PROCESS FOR PRODUCTION OF CYCLOOLEFIN
    • 生产环烯醇的方法
    • US20090048425A1
    • 2009-02-19
    • US11912575
    • 2006-08-18
    • Mitsuo KonishiTeruhiko Inoue
    • Mitsuo KonishiTeruhiko Inoue
    • C08G61/10
    • B01J23/46B01J23/60B01J23/96B01J27/053B01J38/64C07C5/11C07C2523/46C07C2527/053C07C2601/16Y02P20/584
    • According to the present invention, when cycloolefins are produced by partially hydrogenating a monocyclic aromatic hydrocarbon with hydrogen in the presence of a ruthenium catalyst, water, and a metal sulfate, the decrease in catalytic activity and cycloolefin selectivity is suppressed by reducing the concentration of chloride ions dissolved in the water in which the catalyst is present to 300 wt ppm or less and regenerating a part or all of the catalyst for reuse. Zinc sulfate is preferably used as the metal sulfate. Further, the raw materials and catalyst to be supplied to the reaction preferably have a reduced chloride ion content. This method can suppress the decrease in long-term catalytic activity and cycloolefin selectivity. Furthermore, the catalytic activity and cycloolefin selectivity after catalyst regeneration can be maintained at a high level. As a result, cycloolefins can be efficiently produced for a long period of time.
    • 根据本发明,当在钌催化剂,水和金属硫酸盐的存在下,通过氢气使单环芳族烃部分氢化制备环烯烃时,通过降低氯化物的浓度来抑制催化活性和环烯选择性的降低 溶解在其中存在催化剂的水中的离子为300重量ppm以下,再生部分或全部催化剂用于再利用。 硫酸锌优选用作金属硫酸盐。 此外,供给反应的原料和催化剂优选具有减少的氯离子含量。 该方法可以抑制长期催化活性和环烯烃选择性的降低。 此外,催化剂再生后的催化活性和环烯选择性可以保持在高水平。 因此,可以长时间有效地制造环烯烃。