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CN-117957197-B - EMM-63 aluminosilicate zeolite, synthesis and use

CN117957197BCN 117957197 BCN117957197 BCN 117957197BCN-117957197-B

Abstract

The present invention provides an aluminosilicate zeolite designated EMM-63 characterized by a unique powder XRD pattern or unique linkages, a process for its manufacture and its use.

Inventors

  • BURTON ALLEN W
  • VROMAN HILDA B

Assignees

  • 埃克森美孚技术与工程公司

Dates

Publication Date
20260512
Application Date
20220826
Priority Date
20210922

Claims (15)

  1. 1. An aluminosilicate zeolite designated EMM-63, which in its as-calcined form, has an X-ray diffraction pattern comprising at least 10 peaks selected from table 1: TABLE 1 。
  2. 2. The aluminosilicate zeolite of claim 1, which, in its as-calcined form, has an X-ray diffraction pattern comprising all peaks selected from table 1.
  3. 3. The aluminosilicate zeolite of claim 1, having the formula I: (m) Al2O3: siO2 (formula I), Wherein m is more than or equal to 0.05 and less than or equal to 0.17.
  4. 4. An aluminosilicate zeolite designated EMM-63, which in its as-synthesized form, has an X-ray diffraction pattern comprising at least 10 peaks selected from table 2: TABLE 2 。
  5. 5. The aluminosilicate zeolite of claim 4, which, in its as-synthesized form, has an X-ray diffraction pattern comprising all peaks selected from table 2.
  6. 6. The aluminosilicate zeolite of claim 4, having the formula II: (Q) Q (m) Al2O3: siO2 (formula II), Wherein Q is more than or equal to 0 and less than or equal to m is more than or equal to 0.2 and less than or equal to 0.05 and less than or equal to 0.17, and Q is selected from N,2,3, 5-tetramethylpyridine N,2,4, 6-tetramethylpyridine And mixtures thereof.
  7. 7. The aluminosilicate zeolite of any one of claims 1-6, having a framework defined by the connection of tetrahedral (T) atoms of the unit cells in table 3 below, the tetrahedral (T) atoms being connected by bridging atoms: TABLE 3 Table 3 A topologically equivalent atomic positions have the same "T-type" sign, The size and number of minimum rings per angle of b T atoms.
  8. 8. The aluminosilicate zeolite according to any one of claims 1 to 6 having a structure having (a) an orthogonal space group Pmma, a unit cell size of a=22.1 0.20 Å、b = 7.4 0.20 A and c=11.8 0.20 A, and (b) 10 8 An 8-channel system in which a 10-membered ring along the c-axis has (5.2 0.20 Å) (4.9 0.20 A) has a size along the c-axis of an 8-membered ring having (4.7) 0.20 Å) (3.1 0.20 A), and individual 8-membered ring holes in the x-z plane have (4.7) 0.20 Å) (3.1 0.20 A).
  9. 9. The aluminosilicate zeolite according to any one of claims 1 to 6 having a Si/Al molar ratio of from 3 to 10.
  10. 10. A process for making the aluminosilicate zeolite of any one of claims 1-6, the process comprising (A) Preparing a synthesis mixture comprising water, a silica source, an alumina source, a potassium source, a hydroxide ion (OH) source, and a structure directing agent (Q) selected from the group consisting of N,2,3, 5-tetramethylpyridine N,2,4, 6-tetramethylpyridine And mixtures thereof; (b) Heating the synthesis mixture under crystallization conditions including a temperature of 100 ℃ to 200 ℃ for a time sufficient to form crystals of the aluminosilicate zeolite; (c) Recovering at least a portion of the aluminosilicate zeolite from step (b), and (D) Optionally treating the aluminosilicate zeolite recovered in step (c) to remove at least part of the structure directing agent (Q).
  11. 11. The method of claim 10, wherein the structure directing agent (Q) is in its hydroxide form.
  12. 12. The method of claim 10, wherein the synthesis mixture has the following composition in terms of molar ratio: 。
  13. 13. the method of claim 10, wherein the synthesis mixture has the following composition in terms of molar ratio: 。
  14. 14. the method of claim 10, wherein the synthesis mixture has the following composition in terms of molar ratio: 。
  15. 15. a process for converting an organic compound to a conversion product, the process comprising contacting the organic compound with the aluminosilicate zeolite of any one of claims 1-6.

Description

EMM-63 aluminosilicate zeolite, synthesis and use Cross Reference to Related Applications The present application claims priority and benefit from U.S. provisional application No.63/261474 filed on 22, 9, 2021, which is incorporated herein by reference in its entirety. Technical Field The present disclosure relates to aluminosilicate zeolites, methods of making the same, and uses thereof. Background Molecular sieve materials, both natural and synthetic, can be used as adsorbents and have catalytic properties for hydrocarbon conversion reactions. Certain molecular sieves, such as zeolites, alPO and mesoporous materials, are ordered, porous crystalline materials with a defined crystalline structure as determined by X-ray diffraction (XRD). Certain molecular sieves are ordered and produce a specific identifiable XRD pattern. Within certain molecular sieve materials, there may be a large number of voids that may be interconnected by a number of channels or pores. The size of these voids and pores are uniform within a particular molecular sieve material. These materials are known as "molecular sieves" and are used in various industrial processes such as cracking, hydrocracking, disproportionation, alkylation, oligomerization, and isomerization, as the size of these pores is such that they accept adsorbed molecules of a certain size while rejecting molecules of a larger size. Molecular sieves that find use in catalysis and adsorption include any naturally occurring or synthetic crystalline molecular sieve. Examples of these molecular sieves include large pore zeolites, medium pore zeolites, and small pore zeolites. These zeolites and their isoforms (isotypes) are classified by the international zeolite association structure committee according to the rules of the IUPAC zeolite naming committee. According to this classification, framework-type zeolites and other crystalline microporous molecular sieves of defined structure are assigned a three letter code and are described in "Atlas of Zeolite Framework Types", elsevier, sixth edition, 2007, ch.Baerlocher, L.B. et al, which is incorporated herein by reference. These zeolites and their isotypes are also described in the "database of zeolite structures of the IZA Structure Commission". Large pore zeolites generally have a molecular weight of at least aboutAnd include LTL, VFI ("oversized" 18R), MAZ, FAU, OFF, BEA, and MOR framework-type zeolites. Examples of large (or oversized) pore zeolites include zeolite (mazzite), offretite (offretite), zeolite L, VPI-5, zeolite Y, zeolite X, zeolite omega, and zeolite beta. The medium pore size zeolite generally has a pore size of aboutTo less than aboutAnd include, for example MFI, MEL, EUO, MTT, MFS, AEL, AFO, HEU, FER, MWW and TON framework type zeolites. Examples of medium pore size zeolites include ZSM-5, ZSM-11, ZSM-22, MCM-22, silicalite 1 and silicalite 2. The small pore zeolite has a pore size of aboutTo less than aboutAnd include, for example CHA, RTH, ERI, KFI, LEV, SOD and LTA framework-type zeolites. Examples of small pore zeolites include ZK-4, ZSM-2, SAP0-34, SAP0-35, ZK-14, SAP0-42, ZK-21, ZK-22, ZK-5, ZK-20, type A zeolite, chabazite, type T zeolite, and ALPO-17. An idealized inorganic framework structure of a zeolite is a silicate framework in which all tetrahedral atoms are connected to four next-nearest neighbor tetrahedral atoms through oxygen atoms. The term "silicate" as used herein refers to a substance that contains at least silicon and oxygen atoms (i.e., -O-Si-) that are alternately bonded to each other and optionally contains other atoms within the inorganic framework structure, including atoms such as boron, aluminum, or other metals (e.g., transition metals such as titanium, vanadium, or zinc). Atoms other than silicon and oxygen in the framework silicate occupy a portion of the lattice sites that would otherwise be occupied by silicon atoms in a 'full silica' framework silicate. Thus, the term "framework silicate" as used herein refers to an atomic lattice that includes any of silicate, borosilicate, gallium silicate, iron silicate, aluminosilicate, titanosilicate, zinc silicate, vanadiosilicate, and the like. The framework silicate structure within a given zeolite determines the size of the pores or channels present therein. The size of the pores or channels may determine the type of process for which a given zeolite is suitable. Currently, the international zeolite association structural committee has known and accepted more than 200 unique zeolite framework silicate structures, defining a range of pore geometries and orientations. Framework silicates of zeolites are generally characterized by their ring size, which refers to the number of silicon atoms (or substitute atoms, such as those listed above) that tetrahedrally coordinate with oxygen atoms in a ring to define pores or channels in the interior of the zeolite. For example, an "8-membered ring" zeolite refers to a zeolite having pores or