Instituto Mexicano Del Petroleo

Diego Javier Guzman Lucero

Rafael Martinez Palou

Eugenio Alejandro Flores Oropeza

Natalya Victorovna Likhanova

Jorge Froylan Palomeque Santiago

Javier Guzman Pantoja

Ionic liquids of the general formula CAwhere Crepresents an organic cation, specifically, but not limited to the imidazolium, pyridinium, isoquinolinium, ammonium types, which have aliphatic and aromatic substituents, while Arepresents 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.

Halogen-free ionic liquids in naphtha desulfurization and their recovery

The present invention relates to the synthesis of linear aromatic polyimides and the production of membranes for the separation of gases. Specifically, polyimides featuring in their chemical structure, in the part derived from a diamine, 4-fluoro-4',4&#x2033;-diaminotriphenylmethane, and an aromatic dianhydride derived from tetracarboxylic acid. Polyimides are soluble in amidic solvents such as N,N&#x2032;-dimethylformamide, N,N&#x2032;-dimethylacetamide, N-methyl-2-pyrrolidone, etc., which are processed as dense membranes by controlled evaporation of the solvent. The resulting membranes are capable of separating at least a gaseous mixture constituted by two components such as H/CH, He/N, H/CO, O/N, CO/CHand CO/N.

Membranes for gas separation synthesized from polyimides containing 4-fluoro-4',4&#x2033;-diaminotriphenylmethane

This invention is related to the use of ionic liquids of general formula CA, where Crepresents a cation of organic or inorganic type, specifically of the type imidazolium, pyridinium or ammonium salts, while the anion Aare derivatives which are halides, salts of iron (III), aluminum salts (III), acetate and benzoate, though not exclusively. These agents act as ionic liquid extractants of nitrogenous compounds present in hydrocarbon streams through a process of liquid-liquid extraction thereby can be reduced by more than 60% the content of these contaminants in hydrocarbon streams.

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Mexico City, Mexico

Diego Javier Guzman Lucero