Catalytic composition, for alkylation of aromatic hydrocarbons, comprises Bronsted acid(s) dissolved in non-aqueous liquid medium with ionic nature

• Main Authors: PELLIER EMMANUEL, COMMEREUC DOMINIQUE, OLIVIER BOURBIGOU HELENE
• Format: Patent
• Language: English; French
• Published: 07.03.2003
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

A catalytic composition comprises at least one Bronsted acid, dissolved in a non-aqueous liquid medium with an ionic nature. A catalytic composition comprises at least one Bronsted acid, dissolved in a non-aqueous liquid medium of formula (I) with an ionic nature. Q<+>A<-> Q<+> = organic cation; and A<-> = anion that is different from the Bronsted acid anion. Independent claims are included for: (1) An acid catalysis process which uses catalytic composition; (2) A method of alkylation of aromatic hydrocarbons by 2-20C olefin which involves using the catalytic composition; (3) Dimerization of isobutene which involves using catalytic composition, such that molar ratio of Bronsted acid to ionic liquid is 0.001/1-0.1/1; (4) Oligomerization of olefins which involves using catalytic composition, such that molar ratio of Bronsted acid to ionic liquid is 0.01/1-1/1; (5) Alkylation of at least one olefin with an isoparaffin to produce paraffinic hydrocarbons, by using catalytic composition, such that molar ratio of isoparaffin to olefin is 2/1-100/1. The isoparaffin is chosen from isobutane, methyl-2-butane, methyl-2-pentane or methyl-3-pentane. The olefin is ethylene, propylene, n-butene, isobutene, n-pentene or isopentene; (6) Isomerization of double bond of 4-30C olefin; and (7) Purification of olefin mixture. Une composition servant de catalyseur et de solvant dans des procédés de catalyse acide comprend au moins un acide de Bronsted, noté HB, dissous dans un milieu liquide ionique comprenant au moins un cation organique Q+ et un anion A- , cette composition étant telle que, lorsque A et B sont identiques, le rapport molaire de l'acide de Bronsted sur le liquide ionique est inférieur à 1. Ladite composition peut être utilisée particulièrement dans l'alkylation d'hydrocarbures aromatiques, mais aussi dans l'oligomérisation des oléfines, la dimérisation de l'isobutène, l'alkylation de l'isobutane par les oléfines, l'isomérisation des n-paraffines en iso-paraffines et l'isomérisation des n-oléfines en iso-oléfines.