Hydrogenation of carbon monoxide on Co/MgAl/sub 2/O/sub 4/ and Ce-Co/MgAl/sub 2/O/sub 4/ catalysts

Conference · Sat Mar 01 04:00:00 EST 1986 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:5596277

Kondoh, S; Muraki, H; Fujitani,

It is well known that various hydrocarbons are obtained by hydrogenation of CO on Fischer-Tropsch catalysts, the products depending on the catalyst components such as Co, Ni, Fe and Ru: and the reaction conditions, particularly, temperature, pressure, space velocity and H/sub 2//CO ratio. Further, both reactivity and selectivity of catalysts may be improved by suitable selection of support and an additive. The main program of the present work is to develop a catalyst for producing C/sub 5//sup +/ liquid hydrocarbons, as an automobile fuel, by the Fischer-Tropsch synthesis. The authors have studied unique CO catalyst systems consisting of various supports - such as Al/sub 2/O/sub 3/ (..gamma.., ..beta.., ..cap alpha..), MgAl/sub 2/O/sub 4/ (alumina magnesia spinel), MgO and additives selected from the lanthanoid elements (LE). The composition of spinel-based supports was altered in a range from 28 mol % excess Al/sub 2/O/sub 3/ to 28 mol % excess MgO. Particularly, they found that a MgAl/sub 2/O/sub 4/ support with 15-18 mol % excess Al/sub 2/O/sub 3/ is the most preferable for our purpose and CeO/sub 2/ as the additive for Co/spinel catalyst remarkably improves C/sub 5//sup +/ yield. Further, it was confirmed that the catalytic activity of Co-base catalysts agree with the oxidation state of Co-oxides on Co and Co-Ce/spinel catalysts. The performance of Co-based catalysts for the production of higher hydrocarbons from syn-gas were described elsewhere. The items described in this report include (a) selection of supports, (b) selection of optimum reaction conditions for Co-Ce/spinel catalyst, (c) redox characteristics of Co-oxides on a spinel surface, and (d) experimental observation of TPD profiles, adsorption capacities and IR spectra relating to adsorbed CO.

• Research Organization: Toyota Central Research and Development Lab., Inc., Nagakute-cho, Aichi-gun, Aichi-ken, 480-11
• OSTI ID: 5596277
• Report Number(s): CONF-860425-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 31:1
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ADSORPTION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AUTOMOTIVE FUELS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CESIUM COMPOUNDS
CESIUM OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
FISCHER-TROPSCH SYNTHESIS
FUELS
HYDROCARBONS
HYDROGENATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MINERALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
REDOX REACTIONS
SORPTION
SPECTROSCOPY
SPINELS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VALENCE