Alkylated aromatic compositions, zeolite catalyst compositions and processes for making the same
AssigneeChevron Oronite Company LLC
InventorsCurt Campbell, Thomas Harris, Pierre Tequi, Jean-Louis Le Coent
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Abstract
The present invention is directed to novel alkylated aromatic compositions, zeolite catalyst compositions and processes for making the same. The catalyst compositions comprise zeolite Y and mordenite zeolite having a controlled macropore structure. The present invention is also directed to the preparation of the catalyst compositions and their use in the preparation of novel alkylated aromatic compositions. The catalyst compositions of the present invention exhibit reduced deactivation rates during the alkylation process, thereby increasing the life of the catalysts.
Claims85
An alkylated aromatic composition comprising a mixture of:
- (a) an alkylated aromatic hydrocarbon alkylation product wherein the alkylation reaction is conducted in the presence of an alkylation catalyst having a macropore structure comprising zeolite Y, and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 2000 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram;
- and
- (b) an alkylated aromatic hydrocarbon alkylation product wherein the alkylation reaction is conducted in the presence of an alkylation catalyst having a macropore structure comprising mordenite zeolite having a silica to alumina molar ratio of about 50:1 to about 105:1 and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 900 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram.
A process for preparing an alkylated aromatic composition comprising:
- (a) contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a zeolite catalyst having a macropore structure comprising zeolite Y, and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 2000 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram to form a first alkylated aromatic hydrocarbon product;
- (b) contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a zeolite catalyst having a macropore structure comprising mordenite zeolite having a silica to alumina molar ratio of about 50:1 to about 105:1, and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 900 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram to form a second alkylated aromatic hydrocarbon product;
- and
- (c) combining the first alkylated aromatic hydrocarbon product and the second alkylated aromatic hydrocarbon product to form the alkylated aromatic composition;
- wherein steps (a) and (b) can be conducted in any order.
A process for preparing an alkylated aromatic composition comprising contacting at least one aromatic hydrocarbon with at least one olefin in the presence of a zeolite catalyst having a macropore structure comprising zeolite Y and mordenite zeolite, wherein the mordenite zeolite has a silica to alumina molar ratio of about 50:1 to about 105:1, and wherein the peak macropore diameter of the catalyst, measured by ASTM Test No. D 4284-03, is less than or equal to about 2000 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram.
A zeolite catalyst composition having a macropore structure comprising:
- (a) zeolite Y;
- and
- (b) mordenite zeolite having a silica to alumina molar ratio of about 50:1 to about 105:1;
- wherein the peak macropore diameter of the catalyst composition, measured by ASTM Test No. D 4284-03, is less than about 2000 angstroms and the cumulative pore volume of the catalyst at pore diameters less than or equal to about 500 angstroms, measured by ASTM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram.
Dependencies are inferred from the claim text.