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US 6,958,427 B2Granted
Method for catalytic dehydrogenation of hydrocarbons using carbon dioxide as a soft oxidant
AssigneeKorea Research Institute of Chemical Technology
InventorsSang-Eon Park, Jong-Son Chang, Min Seok Park
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Abstract
The present invention relates to a method for catalytic dehydrogenation of alkylaromatic hydrocarbons and more particularly, to a method for catalytic dehydrogenation of alkylaromatic hydrocarbons using carbon dioxide as a soft oxidant in the presence of a heterogeneous catalyst comprising both vanadium and iron, which allows operation at a lower reaction temperature due to improve thermodynamic equilibrium and provides an enhanced conversion of hydrocarbons and energy saving.
Claims10
A method for the catalytic dehydrogenation of alkylaromatic hydrocarbons comprising
- reacting the alkylaromatic hydrocarbons with carbon dioxide in the presence of a heterogenous solid catalyst comprising vanadium and iron and a catalyst promoter selected from the group consisting of antimony, tin, potassium, magnesium, lanthanum, chromium, cerium, molybdenum, calcium, manganese, zirconium, and cesium oxide,
- wherein
- said heterogenous solid catalyst being associated with a support, selected from the group consisting of alumina, zirconia, metal-modified alumina and metal-modified zirconia said heterogenous solid catalyst being from about 0.1 to about 30 weight % of vanadium and from about 0.1 to about 30 weight % of iron, relative to the total weight of the heterogeneous solid catalyst and support;
- said vanadium and iron being active components;
- and
- said carbon dioxide functions as an oxidant.
3 more elements
Dependencies are inferred from the claim text.