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A study on the phase behavior of the system CO2 + CO + H2 + 1-hexene + heptanal
Affiliation:1. National Engineering Laboratory for Pipeline Safety, China University of Petroleum, Beijing 102249, PR China;2. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, PR China;3. Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, PR China;4. Department of Military Petroleum Supply Engineering, Logistical Engineering University, PR China;1. National Institute of Public Health-National Institute of Hygiene, Chocimska 24, 00-791 Warsaw, Poland;2. Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;3. National Medicines Institute, Warsaw, 00-725, Poland;1. Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China;2. University of the Chinese Academy of Sciences, Beijing 100049, China;3. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;4. Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011, USA;5. Department of Power Engineering, Xinjiang Institute of Engineering, Urumqi 830011, China;1. Forensic Science Program, School of Criminal Justice, Michigan State University, East Lansing, MI 48824, USA;2. Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
Abstract:The phase behavior of a system of importance for the hydroformylation reaction of 1-hexene in supercritical CO2 has been studied in the range of 303.2–348.2 K with different CO2 mole fractions. The conversion of 1-hexene varies from 0 to 1. The density of the reaction mixture at different conditions are also determined. It is demonstrated that the phase behavior changes with conversion of 1-hexene. At zero conversion, the phase separation pressure increases with increasing concentration of the reactants in the reaction system and decreases slightly with the increase of temperature. At other conversions, the phase separation pressure increases as temperature rises. The density of the reaction mixture at phase separation point is higher at the larger conversions.
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