Zeolite Y alkylation catalysts
View Patent ↗The present invention is directed to a zeolite Y catalyst having a controlled macropore structure. The present invention is also directed to a zeolite Y catalyst composite and a process for preparing the catalyst composite. The catalyst composite exhibits reduced deactivation rates during the alkylation process, thereby increasing the life of the catalyst. The present invention is also directed to processes for the preparation of carbonated, overbased aromatic sulfonates, which processes comprise alkylation, carbonation of aromatic hydrocarbons with one or more olefins.
1. An alkylated aromatic composition prepared by the process comprising contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a catalyst having a macropore structure comprising zeolite Y wherein the peak macropore diameter, 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 ASIM Test No. D 4284-03, is less than or equal to about 0.30 milliliters per gram.
2. The alkylated aromatic composition of claim 1 , wherein the aromatic hydrocarbon moiety on the alkylated aromatic composition is benzene or toluene.
3. The alkylated aromatic composition of claim 2 , wherein the aromatic hydrocarbon moiety on the alkylated aromatic composition is toluene.
4. The alkylated aromatic composition of claim 1 , wherein the olefin employed to prepare the alkylated aromatic composition is an alpha olefin, an isomerized olefin, a branched-chain olefin or mixtures thereof.
5. The alkylated aromatic composition of claim 4 , wherein the olefin has from about 4 carbon atoms to about 80 carbon atoms.
6. The alkylated aromatic composition of claim 5 , wherein the alpha olefin or the isomerized olefin have from about 6 carbon atoms to about 40 carbon atoms.
7. The alkylated aromatic composition of claim 6 , wherein alpha olefin or the isomerized olefin have from about 20 carbon atoms to about 40 carbon atoms.
8. The alkylated aromatic composition of claim 4 , wherein the branched-chain olefin has from about 6 carbon atoms to about 70 carbon atoms.
9. The alkylated aromatic composition of claim 8 , wherein the branched-chain olefin has from about 8 carbon atoms to about 50 carbon atoms.
10. The alkylated aromatic composition of claim 9 , wherein the branched-chain olefin has from about 12 carbon atoms to about 18 carbon atoms.
11. The alkylated aromatic composition of claim 4 , wherein the olefin is a partially-branched-chain isomerized olefin wherein the olefin has from about 6 carbon atoms to about 40 carbon atoms.
12. The alkylated aromatic composition of claim 11 , wherein the Partially-branched-chain isomerized olefin has from about 20 carbon atoms to about 40 carbon atoms.
13. The alkylated aromatic composition of claim 1 , wherein the alkylated aromatic composition is sulfonated to form an alkylated aromatic sulfonic acid.
14. The alkylated aromatic composition of claim 2 , wherein the alkylated aromatic sulfonic acid is reacted with an alkaline earth metal and carbon dioxide to produce a carbonated, overbased alkylated aromatic sulfonate.
15. An alkylated aromatic composition prepared by the process comprising contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a catalyst composite, wherein the peak macropore diameter of the catalyst, 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, and wherein the catalyst composite comprises:
(a) a zeolite Y; and
(b) a binder.
16. The alkylated aromatic composition of claim 15 , wherein the aromatic hydrocarbon moiety on the alkylated aromatic composition is benzene or toluene.
17. The alkylated aromatic composition of claim 16 , wherein the aromatic hydrocarbon moiety on the alkylated aromatic composition is toluene.
18. The alkylated aromatic composition of claim 15 , wherein the olefin employed to prepare the alkylated aromatic composition is an alpha olefin, an isomerized olefin, a branched-chain olefin or mixtures thereof.
19. The alkylated aromatic composition of claim 18 , wherein the olefin has from about 4 carbon atoms to about 80 carbon atoms.
20. The alkylated aromatic composition of claim 19 , wherein the alpha olefin or the isomerized olefin have from about 6 carbon atoms to about 40 carbon atoms.
21. The alkylated aromatic composition of claim 20 , wherein alpha olefin or the isomerized olefin have from about 20 carbon atoms to about 40 carbon atoms.
22. The alkylated aromatic composition of claim 18 , wherein the branched-chain olefin has from about 6 carbon atoms to about 70 carbon atoms.
23. The alkylated aromatic composition of claim 22 , wherein the branched-chain olefin has from about 8 carbon atoms to about 50 carbon atoms.
24. The alkylated aromatic composition of claim 23 , wherein the branched-chain olefin has from about 12 carbon atoms to about 18 carbon atoms.
25. The alkylated aromatic composition of claim 18 , wherein the olefin is a partially-branched-chain isomerized olefin wherein the olefin has from about 6 carbon atoms to about 40 carbon atoms.
26. The alkylated aromatic composition of claim 25 , wherein the partially-branched-chain isomerized olefin has from about 20 carbon atoms to about 40 carbon atoms.
27. The alkylated aromatic composition of claim 15 , wherein the alkylated aromatic composition is sulfonated to form an alkylated aromatic sulfonic acid.
28. The alkylated aromatic composition of claim 27 , wherein the alkylated aromatic sulfonic acid is reacted with an alkaline earth metal and carbon dioxide to produce a carbonated, overbased alkylated aromatic sulfonate.
29. An alkylated aromatic composition prepared by the process comprising contacting at least one aromatic hydrocarbon with at least one olefin under alkylation conditions in the presence of a catalyst comprising zeolite Y, wherein the catalyst is in the form of a tablet.