Dehydrogenation catalysts and methods for using them
AssigneeClariant International Ltd.
InventorsRong XING, Vladimir FRIDMAN
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Abstract
The present disclosure relates to gallium-based dehydrogenation catalysts that further include additional metal components, and to methods for dehydrogenating hydrocarbons using such catalysts. One aspect of the disclosure provides a calcined dehydrogenation catalyst that includes a gallium species, a cerium species, a platinum promoter, and a silica-alumina support. Optionally, the composition can include a promoter selected from the alkali metals and alkaline earth metals.
Claims20
A dehydrogenation catalyst composition comprising
- Ga, present in the composition in an amount within the range of 0.5 wt. % to 20 wt. %, calculated as elemental metal on a calcined basis;
- Ce, present in the composition in an amount within the range of 0.2 wt. % to 20 wt. %, calculated as elemental metal on a calcined basis;
- Pt, present in the composition in an amount within the range of 1 ppm to 500 ppm, calculated as elemental metal on a calcined basis;
- optionally, a promoter M2 selected from the alkali metals, the alkaline earth metals, and any mixture thereof, present in the composition in an amount of up to 20 wt. %, calculated as elemental metal on a calcined basis;
- and
- a silica-alumina support S1, present in the composition in an amount within the range of 50 wt. % to 99 wt. %, calculated as oxide on a calcined basis, silica being present in S1 in an amount within the range of 1 wt. % to 30 wt. %, calculated as SiO2 on a calcined basis.
The catalyst composition of claim 16, wherein M2 includes one or more alkaline earth metals, present in the composition in a combined amount within the range of 0.2 wt. % to 10 wt. %.
The catalyst composition of any of claims 1, 8-10 and 16-21, wherein Ga is present in an amount of 2 to 10 wt. %, and Pt is present in an amount of 5 ppm to 400 ppm
Dependencies are inferred from the claim text.