Synthesis of ITE framework type molecular sieves

Patent metadata

Field	Value
Publication number	US-10597299-B2
Application number	US-201816193072-A
Country	US
Kind code	B2
Filing date	Nov 16, 2018
Priority date	Jun 7, 2018
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A method is provided for synthesizing molecular sieves of ITE framework type using one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations a structure directing agent.

First claim

The invention claimed is:

1. A method of synthesizing a molecular sieve of ITE framework type, the method comprising:
(a) providing a reaction mixture comprising:
(1) a source of silicon oxide;
(2) a source of an oxide of a trivalent element (X);
(3) a structure directing agent (Q) comprising one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations; and
(4) water; and

(b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve.

2. The method of claim 1 , wherein the reaction mixture has a composition, in terms of molar ratios, as follows:

SiO 2 /X 2 O 3
 5 to 100

Q/SiO 2
0.05 to 0.50

H 2 O/SiO 2
 10 to 80.

3. The method of claim 1 , wherein the reaction mixture has a composition, in terms of molar ratios, as follows:

SiO 2 /X 2 O 3
20 to 60

Q/SiO 2
0.10 to 0.30

H 2 O/SiO 2
 15 to 50.

4. The method of claim 1 , wherein the trivalent element (X) comprises one or more of boron, aluminum, gallium, and iron.

5. The method of claim 1 , wherein the trivalent element (X) comprises boron.

6. The method of claim 1 , wherein the reaction mixture also contains seeds.

7. The method of claim 6 , wherein the reaction mixture comprises from 0.01 to 10,000 ppm by weight of seeds.

8. The method of claim 6 , wherein the seeds comprise a molecular sieve material of ITE framework type.

9. The method of claim 1 , wherein the crystallization conditions include a temperature of from 125° C. to 200° C.

10. A molecular sieve of ITE framework type and, in its as-synthesized form, comprising one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations in its pores.

11. The molecular sieve of claim 10 , and having a SiO 2 /X 2 O 3 molar ratio of 5 to 100, wherein X is a trivalent element.

12. The molecular sieve of claim 11 , wherein the trivalent element comprises one or more of boron, aluminum, gallium, and iron.

13. The molecular sieve of claim 11 , wherein the trivalent element comprises boron.

14. The molecular sieve of claim 11 , wherein the SiO 2 /X 2 O 3 molar ratio is in a range of 20 to 60.

Assignees

• Chevron Usa Inc

Inventors

• Xie Dan

Classifications

• C01B39/082 Primary

  Gallosilicates · CPC title

• B01J29/86

  Borosilicates; Aluminoborosilicates {(B01J29/005 takes precedence)} · CPC title

• B01J29/88

  Ferrosilicates; Ferroaluminosilicates {(B01J29/005 takes precedence)} · CPC title

• B01J29/70

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

• B01J29/89

  Silicates, aluminosilicates or borosilicates of titanium, zirconium or hafnium {(B01J29/005 takes precedence)} · CPC title