# US 2022/0062877 A1 · Molecular sieve ssz-123, its synthesis and use

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- Number: US 2022/0062877 A1
- Document ID: US20220062877A1
- Status: Published application
- Kind: A1
- Application number: 17/315,431
- Filed: 2021-05-10
- Published: 2022-03-03
- Earliest claimed: 2020-08-28
- Assignees: Chevron U.S.A. Inc.
- Applicants: Chevron U.S.A. Inc.
- Inventors: Dan XIE
- Web page: https://patentgrep.com/patent/US20220062877A1

## CPC

- B01J 29/7026: {MFS-type, e.g. ZSM-57}
- B01J 35/633: {less than 0.5 ml/g}
- B01J 37/0018: {Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)}
- B01J 37/009: {Preparation by separation, e.g. by filtration, decantation, screening}
- B01J 37/04: Mixing {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 37/06: Washing {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 37/10: in the presence of water, e.g. steam
- C01B 39/48: using at least one organic template directing agent
- C01P 2002/72: by d-values or two theta-values, e.g. as X-ray diagram
- C01P 2002/80: defined by measured data other than those specified in group C01P2002/70
- C01P 2004/03: obtained by SEM
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

An aluminum-rich molecular sieve material of MFS framework type, designated SSZ-123, is provided. SSZ-123 can be synthesized using 1-ethyl-1-[5-(triethylammonio)pentyl]piperidinium cations as a structure directing agent. SSZ-123 may be used in organic compound conversion and/or sorptive processes.

## Claims

### Claim 1

A molecular sieve of MFS framework type having a molar ratio of SiO2/Al2O3 in a range of 10 to 35.

### Claim 2 (depends on 1)

The molecular sieve of claim 1, wherein the molar ratio of SiO2/Al2O3 is in a range of 15 to 30.

### Claim 3

A molecular sieve of MFS framework type and, in its as-synthesized form, comprising 1-ethyl-1-[5-(triethylammonio)pentyl]piperidinium cations in its pores.

### Claim 4 (depends on 3)

The molecular sieve of claim 3, having a molar ratio of SiO2/Al2O3 in a range of from 10 to 35.

### Claim 5 (depends on 3)

The molecular sieve of claim 3, having a molar ratio of SiO2/Al2O3 in a range of from 15 to 30.

### Claim 6

A method of synthesizing a molecular sieve of MFS framework type, the method comprising:
(1) preparing a reaction mixture comprising:
(a) a source of silicon;
(b) a source of aluminum;
(c) a source of an alkali or alkaline earth metal (M);
(d) a structure directing agent comprising 1-ethyl-1-[5-(triethylammonio)pentyl]piperidinium cations (Q);
(e) a source of hydroxide ions; and
(f) water; and
(2) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve.

### Claim 7 (depends on 6)

The method of claim 6, wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
SiO2/Al2O3
10 to 35
M/SiO2
0.05 to 0.50
Q/SiO2
0.01 to 0.30
OH/SiO2
0.10 to 0.70
H2O/SiO2
15 to 60.

### Claim 8 (depends on 6)

The method of claim 6, wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
SiO2/Al2O3
15 to 30
M/SiO2
0.10 to 0.50
Q/SiO2
0.05 to 0.20
OH/SiO2
0.40 to 0.60
H2O/SiO2
20 to 40.

### Claim 9 (depends on 6)

The method of claim 6, wherein the source of silicon is selected from colloidal silica, precipitated silica, fumed silica, alkali metal silicates, tetraalkyl orthosilicates, and any combination thereof.

### Claim 10 (depends on 6)

The method of claim 6, wherein the source of aluminum is selected from hydrated alumina, aluminum hydroxide, alkali metal aluminates, aluminum alkoxides, water-soluble aluminum salts, and any combination thereof.

### Claim 11 (depends on 6)

The method of claim 6, wherein the alkali or alkaline earth metal (M) comprises potassium.

### Claim 12 (depends on 6)

The method of claim 6, wherein crystallization conditions include heating the reaction mixture under autogenous pressure at a temperature of from 120° C. to 200° C. and a time of from 1 day to 21 days.

### Claim 13

A process for converting a feedstock comprising an organic compound to a conversion product, the process comprising contacting the feedstock at organic compound conversion conditions with a catalyst comprising a molecular sieve of MFS framework type, wherein the molecular sieve has a molar ratio of SiO2/Al2O3 in a range of from 10 to 35.