Hydrocarbon conversion catalyst composition

Patent metadata

Field	Value
Publication number	US-10449525-B2
Application number	US-201113881058-A
Country	US
Kind code	B2
Filing date	Oct 20, 2011
Priority date	Oct 25, 2010
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A hydrocarbon conversion catalyst composition which comprises dealuminated ZSM-48 and/or EU-2 zeolite and a refractory oxide binder essentially free of alumina, processes for preparing such composition and processes for converting hydrocarbon feedstock with the help of such compositions.

First claim

What is claimed is:

1. A dewaxing or alkylaromatics isomerization catalyst composition, which consists essentially of:
a dealuminated dried and calcined extrudate, obtained from a dried and calcined extrudate, wherein the extrudate, before drying and calcination, comprises a binder that is essentially free of alumina and which comprises both silica powder, wherein said silica powder comprises powder particles having a mean diameter between 10 μm and 200 μm, and a silica sol; EU-2 zeolite, wherein said EU-2 zeolite has a silica-to-alumina molar bulk ratio before the dealumination of said dried and calcined extrudate in the range of from 100 to 210; a plasticising agent; and water in an amount of at least 35% and not exceeding 60% by weight of the extrudate before drying and calcination; and
a catalytic metal selected from the group consisting of platinum, palladium and nickel;
wherein the dealumination of said dried and calcined extrudate is done by contacting said dried and calcined extrudate with an aqueous solution of fluorosilicate salt having a concentration of at least 0.005 mole of fluorosilicate salt/liter and at most 0.5 mole of fluorosilicate salt/liter and at a temperature in the range of from 10° C. to 120° C., and
wherein the amount of said EU-2 zeolite present in said hydroconversion catalyst composition is at least 15% wt of said hydrocarbon conversion catalyst composition; and
wherein the EU-2 zeolite is in the form of EU-2 zeolite particles, where the average aluminum concentration of the EU-2 zeolite particles is at least two times the aluminum concentration at the surface of the particles.

2. The catalyst composition according to claim 1 , wherein the zeolite content, on a dry basis, is of from 20 to 70 wt % as calculated on the total of said dewaxing or alkylaromatics isomerization catalyst composition.

3. The catalyst composition according to claim 1 , wherein said fluorosilicate salt of said fluorosilicate salt solution is represented by the formula:
(A) 2/b SiF 6

wherein ‘A’ is a metallic or non-metallic cation other than H+ having the valence ‘b’.

4. A process for converting a hydrocarbon feedstock which process comprises contacting the feedstock with a catalyst composition according to claim 1 at a temperature of from 100 to 600° C. and a pressure of from 1 to 100 bara.

5. A process according to claim 4 in which process the feedstock has a 10% distillation point greater than 343° C. measured by ASTM D-2887-93.

6. The catalyst composition according to claim 2 , wherein the plasticizing agent is selected from the group consisting of dextrose, gelatin, glucose, glues, gums, salts, waxes, starch and cellulose ethers.

7. The catalyst composition according to claim 6 , wherein said binder contains at most 2% wt alumina, based on dry weight of the binder per se.

8. The catalyst composition according to claim 7 , wherein said binder contains at most 1.1% wt alumina, based on dry weight of the binder per se.

9. The catalyst composition according to claim 8 , wherein said extrudate further comprises zeolite ZSM-12 that is present therein in an amount of at most 50% wt, based on the amount of EU-2 zeolite present.

10. The catalyst composition according to claim 9 , wherein the amount of EU-2 zeolite is at least 25% wt and at most 65% wt.

11. The catalyst composition according to claim 10 , wherein said plasticizing agent is methylcellulose or a methylcellulose derivative.

12. The catalyst composition according to claim 11 , wherein said binder contains at most 0.2% wt alumina, based on dry weight of the binder per se.

Assignees

• Domokos Laszlo
• Huve Laurent Georges
• Jongkind Hermanus
• Klazinga Aan Hendrik
• Rigutto Marcello Stefano
• Shell Oil Co

Inventors

• Domokos Laszlo
• Huve Laurent Georges
• Jongkind Hermanus
• Klazinga Aan Hendrik
• Rigutto Marcello Stefano

Classifications

• C10G49/08

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

• B01J23/755

  Nickel · CPC title

• C10G50/00

  Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation · CPC title

• B01J23/44

  Palladium · CPC title

• B01J23/42 Primary

  Platinum · CPC title