Oxidative desulfurization of oil fractions and sulfone management using an FCC
US-10087377-B2 · Oct 2, 2018 · US
Halogen-free ionic liquids in naphtha desulfurization and their recovery
US9850197B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9850197-B2 |
| Application number | US-201414563159-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 8, 2014 |
| Priority date | Aug 29, 2008 |
| Publication date | Dec 26, 2017 |
| Grant date | Dec 26, 2017 |
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Abstract
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Ionic liquids of the general formula C + A − where C + represents an organic cation, specifically, but not limited to the imidazolium, pyridinium, isoquinolinium, ammonium types, which have aliphatic and aromatic substituents, while A − represents a carboxylate, aromatic and aliphatic anion. The ionic liquids are synthesized under conventional heating or microwave irradiation This invention is also related to the application of ionic liquids to remove sulfur compounds of naphthas through a liquid-liquid extraction and the recovery and reuse of ionic liquids by the application of heat, reduced pressure and washing with solvents.
First claim
Opening claim text (preview).
What is claimed is: 1. An ionic liquid containing a heterocyclic cation and a carboxylate anion and having the formula C + A − wherein C + is an isoquinolinium cation, and A − is a carboxylate anion having the formula where R 4 is selected from the group consisting of cycloalkyl, alkenyl, and benzylic. 2. The ionic liquid of claim 1 , wherein said heterocyclic cation is an isoquinolinium cation having at least one substituent selected from the group consisting of benzylic, cycloalkyl, and alkenyl having 1 to 10 carbon atoms. 3. The ionic liquid of claim 1 , wherein said isoquinolinium cation has the formula where R is selected from the group consisting of alkyl, cycloalkyl, alkenyl, benzylic, and functionalized alkyl having 1 to 10 carbon atoms.
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Classifications
Heteroatoms content, i.e. S, N, O, P · CPC title
Recovery of used solvent · CPC title
- C10G21/12Primary
Organic compounds only · CPC title
Light gasoline having a boiling range of about 20 - 100 °C · CPC title
Quaternary ammonium compounds · CPC title
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- What does patent US9850197B2 cover?
- Ionic liquids of the general formula C + A − where C + represents an organic cation, specifically, but not limited to the imidazolium, pyridinium, isoquinolinium, ammonium types, which have aliphatic and aromatic substituents, while A − represents a carboxylate, aromatic and aliphatic anion. The ionic liquids are synthesized under conventional heating or microwave irradiation This invention …
- Who is the assignee on this patent?
- Mexicano Inst Petrol
- What technology area does this patent fall under?
- Primary CPC classification C10G21/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 26 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).