Development of alkali-promoted ruthenium as a novel catalyst for ammonia synthesis
It has been demonstrated that ruthenium is remarkably promoted by addition of alkali (metallic or oxide) for the activation of dinitrogen, although it has the drawback of suffering from inhibition by hydrogen. The high activity thus attained makes it possible to reduce the reaction temperature so that the total pressure may be lowered to attain a desired conversion. Thus there is a possibility to get out of the energy-consuming compression process. This would be an advantage of a ruthenium catalyst to be considered in the near future in connection with energy prices. Another advantage of ruthenium is that it gives rise to less susceptibility to poisons such as H/sub 2/O and CO than iron, when promoted with basic oxides instead of metallic alkali. In fact, it has been demonstrated that ammonia synthesis can be carried out in the presence of water and carbon monoxide on ruthenium catalysts. Thus the direct synthesis of ammonia from dinitrogen, carbon monoxide, and water is possible on ruthenium.
- Research Organization:
- Tokyo Inst. of Tech., Japan
- OSTI ID:
- 6510988
- Journal Information:
- Acc. Chem. Res.; (United States), Vol. 14:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIA
SYNTHESIS
CARBON MONOXIDE
CHEMICAL REACTIONS
NITROGEN
RUTHENIUM
CATALYTIC EFFECTS
WATER
HYDROXIDES
PH VALUE
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
HYDRIDES
HYDROGEN COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REFRACTORY METALS
TRANSITION ELEMENTS
090320* - Inorganic Hydrogen Compound Fuels- Preparation- (1976-1989)
400201 - Chemical & Physicochemical Properties