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US 12,643,796 B2Granted
Molecular sieve SSZ-113 with high acidity, its synthesis and use
AssigneeChevron U.S.A. Inc.
InventorStacey I. Zones
Life of this patent
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Abstract
A novel synthetic crystalline molecular sieve material, designated SSZ-113 is provided which exhibits increased acidity. The SSZ-113 can be synthesized using 1,3-bis(2,3-dimethyl-1H-imidazolium)propane dications as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-113 of increased acidity may be used in organic compound conversion and/or sorptive processes.
Claims8
A method of synthesizing a molecular sieve having an X-ray diffraction pattern including the peaks listed in the following table:
- 2-Theta
- d-Spacing, nm
- Relative Intensity
- 7.80 ± 0.30
- 1.133
- W
- 9.02 ± 0.30
- 0.979
- VS
- 9.78 ± 0.30
- 0.904
- M
- 15.69 ± 0.30
- 0.564
- S
- 16.72 ± 0.30
- 0.530
- W
- 18.28 ± 0.30
- 0.485
- VS
- 21.04 ± 0.30
- 0.422
- W
- 23.53 ± 0.30
- 0.378
- M
- 26.22 ± 0.30
- 0.340
- VS
- 27.36 ± 0.30
- 0.326
- W
- and with the molecular sieve comprising boron and having increased acid sites, the method comprising:
- (a) providing a reaction mixture comprising:
- (1) a source of germanium oxide;
- (2) a source of silicon oxide;
- (3) a source of boron;
- (4) a source of 1,3-bis(2,3-dimethyl-1H-imidazolium)propane dications (Q);
- (5) a source of fluoride ions;
- and
- (6) water;
- (b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve which contains boron;
- (c) removing at least some Q;
- and
- (d) replacing some of the boron in the molecular sieve crystals from (c) with aluminum.
43 more elements
Dependencies are inferred from the claim text.