Isoparaffin synthesis: hydrogenation of carbon monoxide over cadmium catalysts

Journal Article · Sun Feb 01 04:00:00 EST 1987 · J. Catal.; (United States)

OSTI ID:5665542

Davis, M E; Saldarriaga, C; Rossin, J A

The production of straight-chain hydrocarbons by iron, cobalt, nickel, and ruthenium Fischer-Tropsch catalysts has been extensively studied. Under normal synthesis conditions, a broad molecular weight range of products is obtained that requires extensive reprocessing to obtain high yields of transportation fuels. During the 1930s, a second synthesis of hydrocarbons by hydrogenation of carbon monoxide was discovered. Products from this process were low molecular weight, aromatic, and branched aliphatic hydrocarbons. This was termed the isosynthesis process. Isosynthesis catalysts, however, required high reaction temperatures and pressures. Gasoline yields of 90% were obtained at reaction pressures from 350 to 700 atm and temperatures of about 400/sup 0/C. Compared with the yields and product distributions from Fischer-Tropsch processing, the higher octane gasoline range hydrocarbons obtained from isosynthesis could offer an attractive alternative if catalysts could be found that would operate at lower pressure. Because of the high pressures required for the isosynthesis catalysts, comparatively little research has been done in this area since their initial discovery. In this paper the authors describe a catalyst that operates at medium pressure for producing low molecular weight isoparaffins. The metallic component is cadmium and when combined with acid supports, for example, zeolites or expanded clays, catalyzes the hydrogenation of carbon monoxide to low molecular weight isoparaffins. 9 references.

• Research Organization: Virginia Polytechnic Institute and State Univ., Blacksburg
• OSTI ID: 5665542
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 103:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010408* -- Coal
Lignite
& Peat-- C1 Processes-- (1987-)
ALKANES
CADMIUM
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CLAYS
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
FUELS
GASOLINE
HYDROCARBONS
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
METALS
METHANATION
MINERALS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
SYNTHESIS
YIELDS
ZEOLITES