TU Darmstadt / ULB / TUbiblio

The partial gas‐phase hydrogenation of benzene to cyclohexene on supported and coated ruthenium catalysts

Dietzsch, Enrico ; Claus, Peter ; Hönicke, Dieter :
The partial gas‐phase hydrogenation of benzene to cyclohexene on supported and coated ruthenium catalysts.
[Online-Edition: http://dx.doi.org/10.1023/A:1019164001135]
In: Topics in Catalysis, 10 (1/2) pp. 99-106. ISSN 10225528
[Artikel], (2000)

Offizielle URL: http://dx.doi.org/10.1023/A:1019164001135

Kurzbeschreibung (Abstract)

The conversion of benzene to useful products such as cyclohexene is of industrial interest because of the expected surplus of benzene due to its substitution in gasoline by other nondashpolluting components in the next years. Therefore, the partial gasdashphase hydrogenation of benzene to cyclohexene at atmospheric pressure was performed in order to develop catalysts as an alternative to those used in liquiddashphase hydrogenation. Two types of rutheniumdashcontaining catalysts were investigated, viz. supported catalysts with different support materials and coated catalysts with electrolytically formed alumina as support. In order to yield the desired cyclohexene the presence of methanol as a reaction modifier was necessary in the gas phase during the reaction. The hydrogenation on supported Ru catalysts gave selectivities of about 35%, while on coated Ru catalysts selectivities up to 45% were obtained at conversion degrees of 5%. Improved catalyst performance, especially higher selectivity and yield, was obtained at increased partial pressure of methanol and hydrogen and by addition of copper as second metal in the oxide layer of the coated catalysts.

Typ des Eintrags: Artikel
Erschienen: 2000
Autor(en): Dietzsch, Enrico ; Claus, Peter ; Hönicke, Dieter
Titel: The partial gas‐phase hydrogenation of benzene to cyclohexene on supported and coated ruthenium catalysts
Sprache: Englisch
Kurzbeschreibung (Abstract):

The conversion of benzene to useful products such as cyclohexene is of industrial interest because of the expected surplus of benzene due to its substitution in gasoline by other nondashpolluting components in the next years. Therefore, the partial gasdashphase hydrogenation of benzene to cyclohexene at atmospheric pressure was performed in order to develop catalysts as an alternative to those used in liquiddashphase hydrogenation. Two types of rutheniumdashcontaining catalysts were investigated, viz. supported catalysts with different support materials and coated catalysts with electrolytically formed alumina as support. In order to yield the desired cyclohexene the presence of methanol as a reaction modifier was necessary in the gas phase during the reaction. The hydrogenation on supported Ru catalysts gave selectivities of about 35%, while on coated Ru catalysts selectivities up to 45% were obtained at conversion degrees of 5%. Improved catalyst performance, especially higher selectivity and yield, was obtained at increased partial pressure of methanol and hydrogen and by addition of copper as second metal in the oxide layer of the coated catalysts.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Topics in Catalysis
Band: 10
(Heft-)Nummer: 1/2
Verlag: Springer Netherlands
Freie Schlagworte: partial hydrogenation - benzene - cyclohexene - ruthenium catalysts - coated catalysts - anodic oxidation - reaction modifier
Fachbereich(e)/-gebiet(e): Fachbereich Chemie > Technische Chemie > Technische Chemie II
Fachbereich Chemie > Technische Chemie
Fachbereich Chemie
Hinterlegungsdatum: 20 Mär 2009 09:02
Offizielle URL: http://dx.doi.org/10.1023/A:1019164001135
ID-Nummer: 10.1023/A:1019164001135
Export:

Optionen (nur für Redakteure)

Eintrag anzeigen Eintrag anzeigen