Method for making NES framework type zeolites

Patent metadata

Field	Value
Publication number	US-9493363-B2
Application number	US-201414498205-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Sep 26, 2014
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

This disclosure is directed to a method for preparing NES framework type zeolites using a colloidal aluminosilicate composition in the presence of an N-cyclopentyl-N-methylpyrrolidinium cation as a structure directing agent.

First claim

The invention claimed is:

1. A method for preparing an NES framework type zeolite, comprising:
(a) preparing a reaction mixture containing:
(1) a colloidal aluminosilicate composition;
(2) an N-cyclopentyl-N-methylpyrrolidinium cation;
(3) at least one source of an element selected from Groups 1 and 2 of the Periodic Table;
(4) hydroxide ions; and
(5) water; and

(b) subjecting the reaction mixture to crystallization condition sufficient to form crystals of the NES framework type zeolite.

2. The method of claim 1 , wherein the zeolite is prepared from a reaction mixture comprising, in terms of mole ratios, the following:

SiO 2 /Al 2 O 3
25 to 400

M/SiO 2
0.01 to 0.30

Q/SiO 2
0.10 to 0.30

OH/SiO 2
0.10 to 0.50

H 2 O/SiO 2
15 to 50

wherein:
(1) M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table; and
(2) Q is an N-cyclopentyl-N-methylpyrrolidinium cation.

3. The method of claim 1 , wherein the zeolite is prepared from a reaction comprising, in terms of mole ratios, the following:

SiO 2 /Al 2 O 3
25 to 200

M/SiO 2
0.05 to 0.15

Q/SiO 2
0.15 to 0.25

OH/SiO 2
0.20 to 0.30

H 2 O/SiO 2
20 to 35

wherein:
(1) M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table; and
(2) Q is an N-cyclopentyl-N-methylpyrrolidinium cation.

4. The method of claim 1 , wherein the zeolite has a composition, as-synthesized and in the anhydrous state, in terms of mole ratios, as follows:

SiO 2 /Al 2 O 3
25 to 400

Q/SiO 2
0.02 to 0.10

M/SiO 2
0.02 to 0.15

wherein:
(1) Q is an N-cyclopentyl-N-methylpyrrolidinium cation; and
(2) M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table.

5. The method of claim 1 , wherein the zeolite has a composition, as-synthesized and in the anhydrous state, in terms of mole ratios, as follows:

SiO 2 /Al 2 O 3
25 to 200

Q/SiO 2
0.02 to 0.10

M/SiO 2
0.02 to 0.15

wherein:
(1) Q is an N-cyclopentyl-N-methylpyrrolidinium cation; and
(2) M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table.

Assignees

• Elomari Saleh Ali
• Chevron Usa Inc

Inventors

• Elomari Saleh Ali

Classifications

• C01B39/48 Primary

  using at least one organic template directing agent · CPC title

• C01B39/04

  using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound · CPC title

• B01J29/70

  of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 · CPC title