Method for making molecular sieve ssz-27

Patent metadata

Field	Value
Publication number	US-2016340199-A1
Application number	US-201514719059-A
Country	US
Kind code	A1
Filing date	May 21, 2015
Priority date	May 21, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

A method for making a new crystalline molecular sieve designated SSZ-27 is disclosed. SSZ-27 is synthesized using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a structure directing agent.

First claim

1 . A method of preparing molecular sieve SSZ-27, comprising:
(a) preparing a reaction mixture containing:
(1) at least one source of silicon;
(2) at least one source of aluminum;
(3) at least one source of an element selected from Groups 1 and 2 of the Periodic Table;
(4) hydroxide ions;
(5) hexamethyl [4.3.3.0] propellane-8-11-diammonium cations; and
(6) 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 molecular sieve is prepared from a reaction mixture comprising, in terms of mole ratios, the following:

SiO 2 /Al 2 O 3
20 to 80

M/SiO 2
0.05 to 0.50

Q/SiO 2
0.10 to 0.40

OH/SiO 2
0.25 to 0.60

H 2 O/SiO 2
10 to 60

wherein M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table and Q is a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation.

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

SiO 2 /Al 2 O 3
20 to 35

M/SiO 2
0.15 to 0.30

Q/SiO 2
0.10 to 0.30

OH/SiO 2
0.25 to 0.50

H 2 O/SiO 2
20 to 50

wherein M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table and Q is a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation.

4 . The method of claim 1 , wherein the molecular sieve comprises hexamethyl [4.3.3.0] propellane-8,11-diammonium cations within its pore structure.

5 . The molecular sieve of claim 1 , wherein the molecular sieve has a SiO 2 /Al 2 O 3 mole ratio of from 20 to 80.

6 . The molecular sieve of claim 1 , wherein the molecular sieve has a SiO 2 /Al 2 O 3 mole ratio of from 20 to 35.

7 . The method of claim 1 , wherein the crystallization conditions include a temperature between 150° C. and 180° C.

8 . The method of claim 1 , wherein the molecular sieve has, in its as-synthesized form, an X-ray diffraction pattern including the lines shown in the following Table:

2-Theta
d-Spacing, nm
Relative Intensity

 7.57 ± 0.20
1.167
W

 8.62 ± 0.20
1.025
W

 9.35 ± 0.20
0.946
M

 9.83 ± 0.20
0.900
W

13.55 ± 0.20
0.653
W

14.80 ± 0.20
0.598
W

15.27 ± 0.20
0.580
W

16.25 ± 0.20
0.545
W

17.72 ± 0.20
0.500
W

19.76 ± 0.20
0.449
M

20.50 ± 0.20
0.433
W

21.08 ± 0.20
0.421
S

21.30 ± 0.20
0.417
M

21.93 ± 0.20
0.405
S

22.95 ± 0.20
0.387
VS.

Assignees

• Zones Stacey Ian
• Xie Dan
• Saxton Robert James
• Chevron Usa Inc

Inventors

• Zones Stacey Ian
• Xie Dan
• Saxton Robert James

Classifications

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• B01J29/00

  Catalysts comprising molecular sieves {(molecular sieves per se C01B)} · CPC title

• B01J29/70

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

• C01B39/48 Primary

  using at least one organic template directing agent · CPC title

• B01J2235/15

  X-ray diffraction · CPC title