Synthesis in the liquid phase

Technical Report · Thu Mar 11 04:00:00 EDT 1943

OSTI ID:5990871

Justification is presented for an I.G. Farben patent on synthesis of hydrocarbons from carbon monoxide and hydrogen in the liquid phase. Tracing the history of the process, the report notes that Pier worked out the basic patent in 1928. Duftschmid of Farben/Oppau subsequently worked out a variation of the process using for the fluid medium a synthesis product consisting mainly of products vaporizing in the reaction. The process used fixed-bed catalysts. Ruhrchemie A.G. objected to this patent on grounds that the process was already known. Meanwhile, Michael of Farben/Ludwigshafen devised another variation using mainly a finely distributed sintered catalyst and very fast stirring. The process required a high boiling, practically non-volatile liquid phase to keep the finely distributed catalyst in motion in the liquid during the reaction. A good distribution of carbon monoxide, hydrogen, and catalyst was obtained by having the gases enter either through a filter plate or by a rapid stirring of the liquid. The report concludes that since Michael's process was not for fixed catalysts, it was in no way dependent on the Duftschmid process or on Oppau's patent rights. A detailed chronology of work on the processes is included.

• Research Organization: I.G. Farbenindustrie, A.G., Ludwigshafen (Germany)
• OSTI ID: 5990871
• Report Number(s): TOM-256-174-179
• Country of Publication: United States
• Language: German

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CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
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OXIDES
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