Method for manufacture of zeolite mordenite in the presence of ODSO

Patent metadata

Field	Value
Publication number	US-12312246-B2
Application number	US-202217720012-A
Country	US
Kind code	B2
Filing date	Apr 13, 2022
Priority date	Apr 13, 2022
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

The present disclosure is directed to a method of manufacture of mordenite zeolites. This is accomplished by using an improved sol-gel formulation including a water-soluble fraction of ODSO as an additional component. The resulting products are, or contain, mordenite zeolites, with increased yield.

First claim

What is claimed is:

1. A method for the preparation of mordenite zeolite having a MOR framework comprising:
forming a homogeneous aqueous mixture of water, a silica source, an aluminum source, an alkali metal source, an optional structure directing agent, and a water-soluble oxidized disulfide oil (ODSO); and
heating the homogeneous aqueous mixture under conditions and for a time effective for hydrolysis and to form a crystalline zeolite as precipitate suspended in a supernatant, wherein the precipitate comprises mordenite zeolite.

2. The method of claim 1 , wherein the precipitate is recovered and calcined at a suitable temperature, temperature ramp rate and for a suitable period of time to realize porous mordenite zeolite.

3. The method of claim 1 , wherein
a cumulative amount of ODSO and water is approximately equivalent to an amount of water that is effective to produce beta zeolite in the absence of ODSO;
the cumulative amount of ODSO and water, an amount of the silica source, an amount of the aluminum source, an amount of the alkali metal source, and an amount of the optional structure directing agent are provided at an ODSO-enhanced compositional ratio;
the ODSO-enhanced compositional ratio is approximately equivalent to a baseline compositional ratio of water, silica source, aluminum source, alkali metal source and optional structure directing agent, the baseline compositional ratio being effective to produce beta zeolite in the absence of ODSO; and
the conditions and time of heating are approximately equivalent to those that are effective to produce beta zeolite in the absence of ODSO.

4. The method as in claim 3 , wherein the mordenite zeolite comprises at least about 0.1 mass % of the precipitate, and
wherein the effective amount of ODSO is greater than an amount of ODSO that produces only zeolite beta, and less than an amount of ODSO that produces only amorphous material and/or other crystalline material.

5. The method as in claim 3 , wherein the alkali metal source is sodium and the mass ratio of ODSO to sodium is in the range of about 2.2-7.1.

6. The method as in claim 1 , wherein the ODSO is derived from oxidation of disulfide oil compounds present in an effluent refinery hydrocarbon stream recovered following catalytic oxidation of mercaptans present in a mercaptan-containing hydrocarbon stream.

7. The method as in claim 1 , wherein the ODSO compounds have 3 or more oxygen atoms and include one or more compounds selected from the group consisting of (R—SOO—SO—R′), (R—SOO—SOO—R′), (R—SO—SOO—OH), (R—SOO—SOO—OH), (R—SOO—SO—OH), (R—SO—SO—OR), (R′—SOO—SO—OR), (R′—SO—SOO—OR) and (R′—SOO—SOO—OR), wherein R and R′ can be the same or different C1-C10 alkyl or C6-C10 aryl.

8. The method as in claim 1 , wherein the ODSO compounds have 3 or more oxygen atoms and include two or more compounds selected from the group consisting of (R—SOO—SO—R′), (R—SOO—SOO—R′), (R—SO—SOO—OH), (R—SOO—SOO—OH), (R—SOO—SO—OH), (R′SO—SO—OR), (R′—SOO—SO—OR), (R′—SO—SOO—OR) and (R′—SOO—SOO—OR), wherein R and R′ can be the same or different C1-C10 alkyl or C6-C10 aryl.

9. The method as in claim 1 , wherein the ODSO compounds have 3 or more oxygen atoms and include one or more compounds selected from the group consisting of (R—SOO—SO—R′), (R—SOO—SOO—R′), (R—SO—SOO—OH), (R—SOO—SOO—OH), (R—SO—SO—OH), (R—SOO—SO—OH), wherein R and R′ can be the same or different C1-C10 alkyl or C6-C10 aryl.

10. The method as in claim 1 , wherein the silica-to-alumina ratio (SAR) in the zeolite product is between about 10 and 10000.

11. The method as in claim 1 , wherein the aluminum source is selected from the group consisting of aluminates, alumina, other zeolites, aluminum colloids, boehmites, pseudo-boehmites, aluminum hydroxides, aluminum salts, aluminum alkoxides, aluminum wire and alumina gels.

12. The method as in claim 1 , wherein the silica source is selected from the group consisting of sodium silicate (water glass), rice husk, fumed silica, precipitated silica, colloidal silica, silica gels, zeolites, dealuminated zeolites, silicon hydroxides and silicon alkoxides.

13. The method as in claim 1 , wherein the structure directing agent is used to stabilize the zeolite structure.

14. The method as in claim 13 , wherein the structure directing agent is selected from the group consisting of quaternary ammonium ions, trialkylamines, dialkylamines, monoalkylamines, cyclic amines, alkylethanol amines, cyclic diamines, alkyl diamines, alkyl polyamines, alcohols, ketones, morpholine, and glycerol.

15. The method as in claim 13 , wherein the structure directing agent comprises a cation selected from the group consisting of tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, and cetyltrimethylammonium, paired with an anion selected from the group consisting of hydroxide, bromide and iodide.

16. The method as in claim 13 , wherein the structure directing agent is selected from the group consisting of glycerol, ethylene glycol, polyethylene glycol, pyrrolidine-based mesoporogens, piperazine, 1,6-diaminohexane, diethylpiperidinium, N,N,N-trimethyl-1,1-adamantammonium and 1,2-hexanediol.

17. The method as in claim 1 , wherein crystallization occurs in the absence of a seed.

18. The method as in claim 1 , wherein crystallization occurs in the presence of a seed.

19. The method as in claim 1 , wherein the pH of the homogeneous aqueous mixture is in the range from about 9-14.

20. The method as in claim 1 , wherein the homogeneous aqueous mixture is formed by:
(a) providing the silica source; and
combining with the silica source the aluminum oxide source, the alkali metal source, the optional structure directing agent and the water-soluble ODSO;
wherein the water-soluble ODSO is added after the aluminum oxide source, the alkali metal source, and the optional structure directing agent, or wherein the water-soluble ODSO is first combined with the aluminum oxide source, the alkali metal source and the optional structure directing agent, and then combined with the silica source;

(b) providing the aluminum oxide source, the alkali metal source and the optional structure directing agent as a first mixture; and
combining the first mixture with the silica source and the water-soluble ODSO;
wherein the water-soluble ODSO is added after the silica source; or wherein the water-soluble ODSO is first combined with the silica source, and then combined with the first mixture;

(c) combining the water-soluble ODSO with the silica source to form a first mixture; and
combining the first mixture with the aluminum oxide source, alkali metal source and the optional structure directing agent;

or
(d) combining the water-soluble ODSO with the aluminum oxide source, the alkali metal source and the optional structure directing agent to form a first mixture; and
combining the first mixture with the silica source;

wherein an effective amount of water for the homogeneous aqueous mixture in (a)-(d) is provided by using utility water, a water-containing silica source, and/or by using an aqueous mixture of the aluminum oxide source, the alkali metal source and the optional structure directing agent.

Assignees

• Saudi Arabian Oil Co

Inventors

• Hodgkins Robert P
• Koseoglu Omer Refa

Classifications

• C01B39/026

  After-treatment · CPC title

• C01B39/48

  using at least one organic template directing agent · CPC title

• C01B39/265 Primary

  using at least one organic template directing agent · CPC title