Catalyst for methanation and method for the preparation thereof
The invention provides a novel highly heat-resistant solid catalyst for the methanation of hydrogen and carbon monoxide into methane. Different from conventional nickel catalysts, the inventive catalyst comprises a binary active ingredient composed of an alloy of nickel and molybdenum and a molybdenum carbide supported on a porous catalyst carrier. The catalyst is prepared by heating a catalyst intermediate comprising the oxides of nickel and molybdenum supported on the carrier in a gaseous mixture of hydrogen and carbon monoxide at 500*-700* C., preferably, following a step of hydrogen reduction at 400*-900* C. The most preferable catalyst carrier is a mixture or a composite oxide compound composed of magnesium and aluminum oxides. The methanation reaction can be carried out with the inventive catalyst at a much higher temperature, E.G. 650* C., than with conventional catalysts so that the heat recovery from the gaseous product is greatly facilitated contributing to the energy economy.
- Assignee:
- Agency Of Ind Science and Technology (Japan)
- Patent Number(s):
- US 4331544
- OSTI ID:
- 5041601
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
ENERGY RECOVERY
HEAT RECOVERY
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METHANATION
MOLYBDENUM ALLOYS
MOLYBDENUM CARBIDES
MOLYBDENUM COMPOUNDS
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
POROSITY
RECOVERY
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS