Enhancement of reaction rates for catalytic benzaldehyde hydrogenation and sorbitol dehydration in water solvent by addition of carbon dioxide

Journal of Chemical Sciences

Norihito Hiyoshi¹  Aritomo Yamaguchi¹  Osamu Sato¹  Masayuki Shirai1 2¹ 

[1] Research Center for Compact Chemical System, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino, Sendai, 983-8551, Japan$$

关键词: High-pressure carbon dioxide;    high-temperature liquid water;    carbonic acid.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The effect of pressured carbon dioxide on heterogeneous hydrogenation of benzaldehyde and homogeneous dehydration of sorbitol in water solvent was studied. Initial hydrogenation rates of benzaldehyde over a charcoal-supported palladium catalyst in water at 313 K were enhanced by the addition of carbon dioxide. The initial rate increased with an increase in carbon dioxide pressure and became a maximum at 5 MPa. Dehydration of sorbitol proceeded in water phase at 500 K and initial dehydration rates were enhanced by addition of 30 MPa of carbon dioxide.

【 授权许可】

Unknown