Int. J. Mol. Sci. 2007, 8(8), 749-759; doi:10.3390/i8080749
Article

Hydroformylation of Cyclohexene with Carbon Dioxide and Hydrogen Using Ruthenium Carbonyl Catalyst: Influence of Pressures of Gaseous Components

Shin-ichiro Fujita, Shuhei Okamura, Yoshinari Akiyama and Masahiko Arai* email
Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
* Author to whom correspondence should be addressed.
Received: 29 May 2007; in revised form: 11 July 2007 / Accepted: 23 July 2007 / Published: 2 August 2007
(This article belongs to the Section Green Chemistry)
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Abstract: Hydroformylation of cyclohexene was studied with a catalyst system ofRu3(CO)12 and LiCl using H2 and CO2 instead of CO in NMP. The influence of H2 andCO2 pressures on the total conversion and the product distribution was examined. It wasshown that increasing total pressure of H2 and CO2 promoted the reverse water gas shiftreaction and increased the yield of cyclohexanecarboxaldehyde. Its hydrogenation tocyclohexanemethanol was promoted with increasing H2 pressure but suppressed withincreasing CO2 pressure. Cyclohexane was also formed along with those products and thisdirect hydrogenation was suppressed with increasing CO2 pressure. The roles of CO2 as apromoter as well as a reactant were further examined by phase behavior observations andhigh pressure FTIR measurements.
Keywords: hydroformylation; ruthenium carbonyl catalyst; lithium chloride promoter; carbon dioxide; pressure effect

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MDPI and ACS Style

Fujita, S.-I.; Okamura, S.; Akiyama, Y.; Arai, M. Hydroformylation of Cyclohexene with Carbon Dioxide and Hydrogen Using Ruthenium Carbonyl Catalyst: Influence of Pressures of Gaseous Components. Int. J. Mol. Sci. 2007, 8, 749-759.

AMA Style

Fujita S-I, Okamura S, Akiyama Y, Arai M. Hydroformylation of Cyclohexene with Carbon Dioxide and Hydrogen Using Ruthenium Carbonyl Catalyst: Influence of Pressures of Gaseous Components. International Journal of Molecular Sciences. 2007; 8(8):749-759.

Chicago/Turabian Style

Fujita, Shin-ichiro; Okamura, Shuhei; Akiyama, Yoshinari; Arai, Masahiko. 2007. "Hydroformylation of Cyclohexene with Carbon Dioxide and Hydrogen Using Ruthenium Carbonyl Catalyst: Influence of Pressures of Gaseous Components." Int. J. Mol. Sci. 8, no. 8: 749-759.

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