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

International Journal of Molecular Sciences

Shin-ichiro Fujita¹  Shuhei Okamura¹  Yoshinari Akiyama¹ 

[1] id="af1-ijms-08-00749">Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Jap

关键词: hydroformylation;    ruthenium carbonyl catalyst;    lithium chloride promoter;    carbon dioxide;    pressure effect;   

DOI  :  10.3390/i8080749

来源: mdpi

【 摘 要 】

Hydroformylation of cyclohexene was studied with a catalyst system of Ru₃(CO)₁₂ and LiCl using H₂ and CO₂ instead of CO in NMP. The influence of H₂ and CO₂ pressures on the total conversion and the product distribution was examined. It was shown that increasing total pressure of H₂ and CO₂ promoted the reverse water gas shift reaction and increased the yield of cyclohexanecarboxaldehyde. Its hydrogenation to cyclohexanemethanol was promoted with increasing H₂ pressure but suppressed with increasing CO₂ pressure. Cyclohexane was also formed along with those products and this direct hydrogenation was suppressed with increasing CO₂ pressure. The roles of CO₂ as a promoter as well as a reactant were further examined by phase behavior observations and high pressure FTIR measurements.

【 授权许可】

Unknown   
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