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US 10,646,854 B2Granted
Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene
AssigneeVersalis S.P.A.
InventorsRodolfo Iezzi, Giulio Manzini, Paolo Pollesel, Alessandro Del Seppia
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Abstract
The present invention relates to a catalytic composition which comprises microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.
Claims17
A catalytic composition, consisting of:
- microspheroidal alumina modified with silica, and
- an active component containing a mixture comprising
- at least one of gallium and gallium oxide,
- at least one of Tin and a Tin oxide,
- at least one of platinum and a platinum oxide in a quantity ranging from 1 ppm to 500 ppm with respect to a total weight of the catalytic composition, and K2O,
- wherein the catalytic composition dehydrogenates mixtures of butenes in the co-presence of C4 paraffins in a circulating fluid-bed equipped with a reactor and regenerator with a conversion of at least about 17% and/or a selectivity of at least about 84%, wherein conversion is calculated by
- {[Σ(Σbutanes+Σbutenes)reactor inlet−Σ(Σbutanes+Σbutenes)outlet reactor]/Σ(Σbutanes+Σbutenes)reactor inlet}*100
- and selectivity is calculated by
- {1,3butadienereactor outlet/[Σ(Σbutanes+Σbutenes)reactor inlet−Σ(Σbutanes+Σbutenes)reactor outlet]}*100.
6 more elements
A catalytic composition, consisting of:
- microspheroidal alumina modified with silica, the silica being present in an amount of 0.03 to 3% by weight, with respect to the total weight of the catalytic composition, and
- an active component containing a mixture comprising
- gallium oxide in an amount of 0.2% by weight to 3.8% by weight, with respect to the total weight of the catalytic composition,
- at least one of Tin and a Tin oxide in an amount of 0.001% to 1% by weight, with respect to the total weight of the catalytic composition,
- at least one of platinum and a platinum oxide in a quantity ranging from 1 ppm to 500 ppm with respect to a total weight of the catalytic composition, and K2O in an amount of 0.2 to 3.8% by weight, with respect to the total weight of the catalytic composition.
2 more elements
A catalytic composition, consisting of:
- microspheroidal alumina modified with silica, and
- an active component containing a mixture comprising
- at least one of gallium and gallium oxide,
- at least one of Tin and a Tin oxide,
- at least one of platinum and a platinum oxide in a quantity ranging from 1 ppm to 500 ppm with respect to a total weight of the catalytic composition, and K2O,
- wherein the catalytic composition dehydrogenates mixtures of butanes in the co-presence of C4 paraffins in a circulating fluid-bed pilot plant equipped with a reactor and regenerator with a conversion of at least about 17% and/or a selectivity of at least about 84%,
- wherein conversion is calculated by
- {[Σ(Σbutanes+Σbutenes)reactor inlet−Σ(Σbutanes+Σbutenes)outlet reactor]/Σ(Σbutanes+Σbutenes)reactor inlet}*100
- and selectivity is calculated by
- {1,3butadienereactor outlet/[Σ(Σbutanes+Σbutenes)reactor inlet−Σ(Σbutanes+Σbutenes)reactor outlet]}*100.
7 more elements
Dependencies are inferred from the claim text.