Methods of preparing an aromatization catalyst

Patent metadata

Field	Value
Publication number	US-10774018-B2
Application number	US-201916571273-A
Country	US
Kind code	B2
Filing date	Sep 16, 2019
Priority date	Dec 21, 2016
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A method of preparing a bound zeolite support comprising: contacting a zeolite powder with a binder and water to form a paste; shaping the paste to form an wet extruded base; removing excess water from the wet extruded base to form an extruded base; contacting the extruded base with a fluorine-containing compound to form a fluorinated extruded base; calcining the extruded base to form a calcined fluorinated extruded base; washing the calcined fluorinated extruded base to form a washed calcined fluorinated extruded base; drying the washed calcined fluorinated extruded base to form a dried washed calcined fluorinated extruded base; and calcining the dried washed calcined fluorinated extruded base to form a bound zeolite support.

First claim

What is claimed is:

1. A method comprising:
calcining an extruded base to form a calcined extruded base, wherein the extruded base comprises a KL-zeolite;
contacting the calcined extruded base with a solution containing water and a fluorine-containing compound to form a washed fluorinated calcined extruded base;
drying and calcining the washed fluorinated calcined extruded base;
washing, drying, and calcining the washed fluorinated calcined extruded base;
to form a bound zeolite support; and
contacting the bound zeolite support with a Group VIII metal.

2. The method of claim 1 , further comprising:
contacting a KL-zeolite powder with a binder and water to form a paste;
shaping the paste to form a wet extruded base; and
removing excess water from the wet extruded base to form the extruded base.

3. The method of claim 2 , wherein the binder comprises synthetic or naturally-occurring zeolites, alumina, silica, clays, refractory oxides of metals of Groups IVA and IVB of the Periodic Table of the Elements; oxides of silicon, titanium, zirconium; or combinations thereof.

4. The method of claim 2 , wherein the bound zeolite support has a weight ratio of the KL-zeolite to the binder in a range of from about 90:10 to about 70:30.

5. The method of claim 1 , wherein the Group VIII metal is Pt, Pd, Rh, Ir, Ru, Os, or combinations thereof.

6. The method of claim 3 , wherein the Group VIII metal is Pt.

7. The method of claim 1 , further comprising contacting the bound zeolite support with at least one chlorine-containing compound to form an aromatization catalyst.

8. The method of claim 7 , wherein the bound zeolite support is contacted with the chlorine-containing compound while the bound zeolite support is contacted with the Group VIII metal.

9. The method of claim 1 , wherein the KL-zeolite comprises pores having an effective pore diameter ranging from about 6 Angstroms (Å) (0.6 nm) to about 15 Å (1.5 nm).

10. The method of claim 1 , wherein the bound zeolite support comprises fluoride present in an amount of from about 0.1 wt. % to about 5 wt % based on x-ray florescence.

11. A method comprising:
contacting a KL-zeolite powder with a binder and water to form a paste;
shaping the paste to form an extruded base comprising a KL-zeolite;
calcining the extruded base to form a calcined extruded base;
contacting the calcined extruded base with a solution containing water and a fluorine-containing compound to form a washed fluorinated calcined extruded base;
drying and calcining the washed fluorinated calcined extruded base;
washing, drying, and calcining the washed fluorinated calcined extruded base;
to form a bound zeolite support; and
contacting the bound zeolite support with a Group VIII metal.

12. The method of claim 11 , wherein the binder comprises synthetic or naturally-occurring zeolites, alumina, silica, clays, refractory oxides of metals of Groups IVA and IVB of the Periodic Table of the Elements; oxides of silicon, titanium, zirconium; or combinations thereof.

13. The method of claim 11 , wherein the bound zeolite support has a weight ratio of the KL-zeolite to the binder in a range of from about 90:10 to about 70:30.

14. The method of claim 11 , wherein the Group VIII metal is Pt, Pd, Rh, Ir, Ru, Os, or combinations thereof.

15. The method of claim 14 , wherein the Group VIII metal is Pt.

16. The method of claim 11 , further comprising contacting the bound zeolite support with at least one chlorine-containing compound to form an aromatization catalyst.

17. The method of claim 16 , wherein the bound zeolite support is contacted with the chlorine-containing compound while the bound zeolite support is contacted with the Group VIII metal.

18. The method of claim 16 , further comprising a reforming process, wherein the reforming process comprises contacting the aromatization catalyst with a hydrocarbon feed in a reaction zone under reforming conditions and recovering aromatics from the reaction zone.

19. The method of claim 11 , wherein the KL-zeolite comprises pores having an effective pore diameter ranging from about 6 Angstroms (Å) (0,6 nm) to about 15 Å (1.5 nm).

20. The method of claim 11 , wherein the bound zeolite support comprises fluoride present in an amount of from about 0.1 wt. % to about 5 wt. % based on x-ray florescence.

Assignees

• Chevron Phillips Chemical Co Lp

Inventors

• Wu An-Hsiang

Classifications

• Y02P20/52

  using catalysts, e.g. selective catalysts · CPC title

• C07C15/06

  Toluene · CPC title

• C07C15/04

  Benzene · CPC title

• B01J37/26

  Fluorinating · CPC title

• B01J37/08

  Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title