Catalytic conversion of ethanol to 1-/2-butenes
AssigneeBattelle Memorial Institute
InventorsVanessa M. Dagle, Robert A. Dagle
Life of this patent
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Abstract
Simple and economical conversion of aqueous ethanol feed streams into butenes by a single step method using transition metal oxides on a silica supports under preselected processing conditions. By directly producing a C4-rich olefin mixture from an ethanol containing stream various advantages are presented including, but not limited to, significant cost reduction in capital expenses and operational expenses.
Claims3
A process for producing butenes from a feed stream containing ethanol in a single step, the process comprising the steps of:
- passing a feed stream containing ethanol in a gas phase over a catalyst of 0.5 wt. % Au_4 wt. % Ag/4 wt. % ZrO2/SBA-16 catalyst having a transition metal oxide with a transition metal dispersion of at least 30% by volume on a silica support, wherein the transition metal is Ag, Cu, or Re, in the presence of a hydrogen containing carrier gas, at a preselected temperature and a preselected pressure to directly form butenes from the ethanol with selectivity equal or greater than 13%, thereby producing a product stream comprising butenes;
- and
- recovering the formed butenes from the product stream.
A process for producing butenes from a feed stream containing ethanol in a single step, the process comprising the steps of:
- passing a feed stream containing ethanol in a gas phase over a catalyst having a transition metal oxide with a transition metal dispersion of at least 30% by volume on a silica support, wherein the transition metal is Ag, Cu, or Re, in the presence of a hydrogen containing carrier gas, at a preselected temperature and a preselected pressure to directly form butenes from the ethanol with selectivity equal or greater than 13%, wherein the catalyst is a 0.5 wt. % Re_4 wt. % Ag/4 wt. % ZrO2/SBA-16 catalyst, thereby producing a product stream comprising butenes;
- and
- recovering the formed butenes from the product stream.
A process for producing butenes from a feed stream containing ethanol in a single step, the process comprising the steps of:
- passing a feed stream containing ethanol in a gas phase over a catalyst having a transition metal oxide with a transition metal dispersion of at least 30% by volume on a silica support, wherein the transition metal is Ag, Cu, or Re, in the presence of a hydrogen containing carrier gas, at a preselected temperature and a pressure of 70 atm to directly form butenes from the ethanol with selectivity equal or greater than 13%, thereby producing a product stream comprising butenes, thereby producing a product stream comprising butenes;
- and
- recovering the formed butenes from the product stream.
Dependencies are inferred from the claim text.