Selective hydrogenation of cyclododecatriene to cyclododecene

Details Selective hydrogenation of cyclododecatriene to cyclododecene Selective hydrogenation of cyclododecatriene to cyclododecene

2007-08-07

2007-08-07

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

Partial

C585S259000, C585S276000, C585S277000

Reexamination Certificate

active

10790094

ABSTRACT:
A process for preparing cyclododecene by selective gas-phase hydrogenation of at least one starting material selected from cyclododecatriene, cyclododecadiene and mixtures thereof, wherein the starting material present in the gas phase is hydrogenated in the presence of a catalyst in a fixed-bed reactor and the Bodenstein number for the process is greater than 100.

REFERENCES:
patent: 5177278 (1993-01-01), Sanchez
Georg Wiessmeier, et al., “Heterogeneously Catalyzed Gas-Phase Hydrogenation of cis, trans, trans-1,5,9-Cyclododecatriene on Palladium Catalysts Having Regular Pore Systems”, Ind. Eng. Chem. Res., vol. 35, No. 12, XP-002246783, 1996, pp. 4412-4416.
Georg Wiessmeier, et al., “Heterogen katalysierte Selektivhydrierung von cis, trans, trans-1,5,9-Cyclododecatrien an einem Pd/Al2O3-Schalenkatalysator”, Chem. Ing. Tech., vol. 67, No. 1, XP-000485565, 1995, pp. 78-80.

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