Hydrogenation of carbon monoxide on Co/MgAl/sub 2/O/sub 4/ and Ce-Co/MgAl/sub 2/O/sub 4/ catalysts
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-; TRN: 86-025942
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 31:1; Conference: 191. American Chemical Society national meeting, New York, NY, USA, 13 Apr 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM OXIDES
CATALYTIC EFFECTS
CARBON MONOXIDE
HYDROGENATION
CESIUM OXIDES
COBALT OXIDES
FISCHER-TROPSCH SYNTHESIS
CATALYSTS
HYDROCARBONS
ABSORPTION SPECTROSCOPY
ADSORPTION
ALUMINIUM COMPOUNDS
AUTOMOTIVE FUELS
CATALYST SUPPORTS
CHEMICAL PREPARATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
OXYGEN COMPOUNDS
REDOX REACTIONS
SPINELS
SURFACE AREA
VALENCE
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CESIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
FUELS
MINERALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)
400201 - Chemical & Physicochemical Properties