Hydroaminomethylation in supercritical ammonia

A. Martin, M. Kant, H. Klein, R. Jackstell, M. Beller

Research output: Contribution to journalArticlepeer-review


Thermodynamic measurements were conducted in the reaction system of hydroaminomethylation of olefins. Mixtures of ammonia, olefins, co-solvents, synthesis gas, and products such as nonylamine used as model and water were studied. In dependence on the reaction conditions and mixtures, selected opalescence points in a region from 92 to 290 bar and 120°-172°C were found. Further investigations were performed in the presence of various model olefins, mainly 1-pentene, 1-octene, and 1-dodecene were used. Tests with such olefin reactants used in high concentrations showed a strong influence on the position (pressure and temperature data) of the opalescence point. This might be caused by density, boiling point and probably intermolecular interaction with ammonia of the used olefin. An increased addition of water shifted the critical points of the mixtures to higher pressures and temperatures. This effect was mainly due to the intermolecular interaction such of co-solvents with ammonia. This is an abstract of a paper presented at the DGMK/SCI-Conference "Synthesis Gas Chemistry" (Dresden, Germany 10/4-6/2006).

Original languageEnglish
Pages (from-to)231-238
Number of pages8
JournalDGMK Tagungsbericht
Issue number4
StatePublished - 2006
Externally publishedYes


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