Titania-bound zeolite EU-2 composition and method of making and using such composition

Patent metadata

Field	Value
Publication number	US-9764312-B2
Application number	US-201313778599-A
Country	US
Kind code	B2
Filing date	Feb 27, 2013
Priority date	Feb 29, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

Catalyst composition useful in the catalytic dewaxing of a waxy hydrocarbon feedstock which catalyst composition includes a mixture of zeolite EU-2 and titania and may further include a noble metal. The zeolite EU-2 has a molar bulk ratio of silica-to-alumina (SAR) of greater than 100:1. The zeolite or mixture may have been dealuminated such as by acid leaching using a fluorosilicate salt or by steam treating.

First claim

That which is claimed is:

1. A catalyst composition comprising a mixture comprising titania and zeolite EU-2 having a molar bulk ratio of silica-to-alumina (SAR) of greater than 115:1; wherein said zeolite EU-2 is present in said composition in an amount of at least 10 wt. % and at most 60% wt and said titania is present in said composition in an amount of no more than 90% wt, with such % wt being based on the dry weight of said composition; and wherein said titania has a high surface area greater than 105 m 2 /gm.

2. A catalyst composition as recited in claim 1 , further comprising a noble metal selected from the group consisting of platinum and palladium.

3. A catalyst composition as recited in claim 1 , wherein said mixture contains zeolite EU-2 particles of which the average aluminum concentration is at least 1.1 times the aluminum concentration at the surface of the EU-2 particles.

4. A catalyst composition as recited in claim 1 , wherein said catalyst composition is substantially free of silica other than the silica contained in said zeolite EU-2 framework.

5. A catalyst composition as recited in claim 1 , wherein said catalyst composition is substantially free of alumina other than the alumina contained in said zeolite EU-2 framework.

6. A catalyst composition as recited in claim 1 , wherein said zeolite EU-2 has a molar bulk ratio of silica-to-alumina greater than 120:1 and said titania has a B.E.T. surface area greater than 125 m 2 /gm.

7. A catalyst composition as recited in claim 1 , wherein more than 60 wt % of said titania is in the form of anatase titania.

8. A catalyst composition as recited in claim 1 , wherein said zeolite EU-2 content of said composition is at least 25 wt % and at most 55 wt % and the titania content of said composition is at least 30 wt % and no more than 75 wt %.

9. A catalyst composition as recited in claim 1 , wherein said zeolite EU-2 has a molar bulk ratio of silica-to-alumina greater than 130:1 and said titania has a B.E.T. surface area greater than 150 m 2 /gm.

10. A catalyst composition as recited in claim 1 , wherein said zeolite EU-2 content of said composition is at least 30 wt % and at most 60 wt % and the titania content of said composition is at least 40 wt % and at most 90 wt %.

11. A catalyst composition as recited in claim 1 , further comprises a noble metal selected from the group consisting of platinum and palladium; and wherein said zeolite EU-2 has a molar bulk ratio of silica-to-alumina greater than 130:1 and less than 500:1; said titania has a B.E.T. surface area greater than 175 m 2 /gm and less than 700 m 2 /gm; said zeolite EU-2 content of said composition is at least 10 wt % and at most 55 wt %; and said titania content of said composition is at least 45 wt % and no more than 70wt % of said composition.

12. A catalyst composition as recited in claim 11 , wherein said titania includes more than 60 wt % titania in the anatase form and less than 40 wt % in the rutile form.

13. A method for preparing said catalyst composition of claim 1 , wherein said method comprises: preparing a mixture comprising at least 40 wt. % and no more than 80 wt. % titania, having a high surface area greater than 105 m 2 /gm, ant at most 60wt. % zeolite EU-2 having a molar bulk ratio of silica-to-alumina (SAR) of greater than 115:1 and forming said mixture into a particle.

14. A method as recited in claim 13 , further comprising: drying and calcining said particle to thereby provide a calcined particle.

15. A method as recited in claim 14 , further comprising: subjecting said calcined particle to dealumination to thereby provide a dealuminated particle comprising dealuminated zeolite.

16. A method as recited in claim 15 , further comprising:
incorporating a noble metal into said dealuminated particle to thereby provide a catalyst composition comprising zeolite EU-2, titania and said noble metal.

17. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 1 .

18. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 2 .

19. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 3 .

20. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 4 .

21. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 5 .

22. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 6 .

23. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 7 .

24. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 8 .

25. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 9 .

26. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 10 .

27. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 11 .

28. A process for the catalytic dewaxing of a hydrocarbon oil feed, wherein said process comprises: contacting under catalytic dewaxing conditions said hydrocarbon oil feed with the catalyst composition of claim 12 .

Assignees

• Shell Oil Co

Inventors

• Geerinck Peter
• Jongkind Hermanus
• Rigutto Marcello Stefano
• Pelgrim Bart

Classifications

• C10G73/02

  Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils · CPC title

• C10G45/64

  containing crystalline alumino-silicates, e.g. molecular sieves · CPC title

• C10G45/62

  containing platinum group metals or compounds thereof · CPC title

• B01J2229/42

  Addition of matrix or binder particles · CPC title

• B01J2229/37

  Acid treatment · CPC title