Back to results
US 7,893,311 B2Granted
Method for producing ethylene and propylene
AssigneeAsahi Kasei Chemicals Corporation
InventorsYoshikazu Takamatsu, Kouji Nomura
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAsahi Kasei Chemicals Corporation
InventorsYoshikazu Takamatsu, Kouji Nomura
Estimating the term…
The invention is to provide a catalyst excellent in product producibility and selectivity, and in coking degradation resistance and regeneration degradation resistance, which is for production of ethylene and propylene through catalytic conversion from a hydrocarbon material. The invention relates to a method for producing ethylene and propylene through catalytic conversion from an olefin, by contacting a hydrocarbon material with a zeolite-containing shaped catalyst satisfying the following requirements (1) to (6), in a reactor: (1) the zeolite is an intermediate pore-size zeolite having a pore size of from 5 to 6.5 angstroms, (2) the zeolite does not substantially contain a proton, (3) the zeolite contains at least one metal selected from the group consisting of metals belonging to the Group IB of the Periodic Table, (4) the zeolite-containing shaped catalyst comprises silica as a binder, (5) the zeolite-containing shaped catalyst has a side-crush strength of at least 2.5 N/mm, (6) the zeolite-containing shaped catalyst has a sodium content of 500 ppm or less as an H-exchange type thereof.
A method for producing ethylene and propylene by contacting a hydrocarbon material that contains at least one olefin having from 4 to 12 carbon atoms in an amount of at least 20% by weight, with a zeolite-containing shaped catalyst in a fixed-bed reactor, to thereby carry out catalytic conversion of the at least one olefin having from 4 to 12 carbon atoms, wherein the zeolite-containing shaped catalyst satisfies the following requirements (1) to (6):
Dependencies are inferred from the claim text.