Borosulfate proton conducting materials
US-11296346-B2 · Apr 5, 2022 · US
Scalable method for preparing crystalline borosulfate materials
US12252408B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12252408-B2 |
| Application number | US-202318096602-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 13, 2023 |
| Priority date | Feb 8, 2022 |
| Publication date | Mar 18, 2025 |
| Grant date | Mar 18, 2025 |
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Abstract
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A method of preparing borosulfate materials avoids the need for fuming sulfuric acid, also known as oleum. Instead, B(OH) 3 present in solution in concentrated sulfuric acid at 5% to 15% by weight is reacted with a cation source at 100-250° C. under dynamic vacuum while in connection with a receiving vessel comprising a desiccant and separate from the reaction vessel, thereby causing formation of a borosulfate material in the reaction vessel while eliminated water is collected in the receiving vessel.
First claim
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What is claimed is: 1. A method of preparing borosulfate materials, the method comprising: providing in a reaction vessel a solution of B(OH) 3 in concentrated sulfuric acid at 5% to 15% by weight; adding a cation source thereto; and then heating the solution to 100-250° C. under dynamic vacuum while in connection with a receiving vessel comprising a desiccant and separate from the reaction vessel, thereby causing formation of a borosulfate material in the reaction vessel while eliminated water is collected in the receiving vessel. 2. The method of claim 1 , wherein said desiccant is concentrated sulfuric acid. 3. The method of claim 1 , where the concentrated sulfuric acid is not oleum. 4. The method of claim 1 , wherein the cation source comprises ammonium, potassium, and/or sodium. 5. The method of claim 1 , wherein more than one cation source is used to produce a borosulfate material comprising multiple species of cation. 6. The method of claim 1 , further comprising isolating the borosulfate material by filtration and washing it with a polar organic solvent.
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- What does patent US12252408B2 cover?
- A method of preparing borosulfate materials avoids the need for fuming sulfuric acid, also known as oleum. Instead, B(OH) 3 present in solution in concentrated sulfuric acid at 5% to 15% by weight is reacted with a cation source at 100-250° C. under dynamic vacuum while in connection with a receiving vessel comprising a desiccant and separate from the reaction vessel, thereby causing formation…
- Who is the assignee on this patent?
- Us Gov Sec Navy
- What technology area does this patent fall under?
- Primary CPC classification C01B35/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 18 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).