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US 8,946,495 B2Granted
Process for alkylation of toluene to form styrene and ethylbenzene
AssigneeFina Technology, Inc.
InventorSivadinarayana Chinta
Life of this patent
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Abstract
A process is disclosed for making styrene and/or ethylbenzene by reacting toluene with a C1 source over a catalyst in at least one radial reactor to form a product stream comprising styrene and/or ethylbenzene.
Claims15
A process for making styrene comprising:
- reacting toluene with a C1 source comprising formaldehyde over a catalyst in at least one radial reactor to form a product stream comprising styrene, wherein the radial reactor comprises a reaction zone comprising the catalyst, wherein the process is conducted such that an average residence time in the reaction zone of the reactants is less than 60 seconds, wherein the reaction of the toluene and the formaldehyde has a selectivity to styrene ranging from 60 to 80 weight percent;
- and
- wherein the catalyst comprises an X-type zeolite promoted with a promoter selected from the group consisting of Co, Mn, Ti, Zr, V, Nb, Ga, Ag, Na, Cu, Mg, Fe, Mo, Ce, and combinations thereof.
A process for making styrene comprising:
- reacting toluene with a C1 source comprising formaldehyde over a catalyst in at least one radial reactor to form a product stream comprising styrene;
- wherein the radial reactor comprises a reaction zone comprising the catalyst, wherein the process is conducted such that an average residence time in the reaction zone of the reactants is less than 60 seconds, a reaction pressure in the radial reactor is in the range of 0.1 atm to 10 atm, and a pressure drop over the catalyst in the reaction of the toluene and the formaldehyde is less than 5 psi;
- and
- wherein the reaction of the toluene and the formaldehyde has a selectivity to styrene ranging from 60 to 80 weight percent, a ratio of selectivity to styrene to selectivity to ethylbenzene ranging from 5:1 to 5:3, and a toluene conversion ranging from 0.05 to 5 weight percent;
- and
- wherein the catalyst comprises an X-type zeolite promoted with a promoter selected from the group consisting of Co, Mn, Ti, Zr, V, Nb, Ga, Ag, Na, Cu, Mg, Fe, Mo, Ce, and combinations thereof.
3 more elements
A process for making styrene comprising:
- reacting toluene with a C1 source comprising formaldehyde over a catalyst in at least one radial reactor to form a product stream comprising styrene;
- wherein the radial reactor comprises a reaction zone comprising the catalyst, wherein the process is conducted such that an average residence time in the reaction zone of the reactants is less than about 30 seconds, a reaction pressure in the radial reactor is in the range of 0.1 atm to 5 atm, and a pressure drop over the catalyst in the reaction of the toluene and the formaldehyde is less than 1 psi;
- and
- wherein the reaction of the toluene and the formaldehyde has a selectivity to styrene ranging from 60 to 80 weight percent, a ratio of selectivity to styrene to selectivity to ethylbenzene ranging from 5:1 to 5:3, and a toluene conversion ranging from 0.05 to 5 weight percent;
- and
- wherein the catalyst comprises an X-type zeolite promoted with a promoter selected from the group consisting of Co, Mn, Ti, Zr, V, Nb, Ga, Ag, Na, Cu, Mg, Fe, Mo, Ce, and combinations thereof.
3 more elements
Dependencies are inferred from the claim text.