Abstract:
A process for alkylating an aromatic compound comprising reacting at least one aromatic compound with a mixture of olefins having from about 8 to about 100 carbon atoms, in the presence of a strong acid catalyst wherein the resulting product comprises at least about 60 weight percent of a 1, 2, 4 tri-alkylsubstituted aromatic compound.
Abstract:
A process for disproportionating isoparaffins and paraffins in the presence of at least one initiator is disclosed. The product from the disproportionation contains a gasoline range material having a higher octane-rating than the isoparaffins and paraffins in the feed and a diesel range material having a higher cetane number than the isoparaffins and paraffins in the feed.
Abstract:
A process for preparing substituted pentacene compounds comprises the step of cyclizing substituted bis(benzyl)phthalic acids using an acid composition comprising trifluoromethanesulfonic acid, the substituted bis(benzyl)phthalic acids being represented by the following general formulas: 1 wherein each R (that is, each of the groups R1 through R8) is independently an electron-donating group, a halogen atom, a hydrogen atom, or a combination thereof.
Abstract:
The invention concerns the catalytic alkylation of at least one isoparaffin selected from the group formed by isobutane and isopentane in the presence of at least one olefin containing 3 to 6 carbon atoms per molecule, using a catalyst comprising 40% to 99% by weight of an acid selected from acids with formula R--SO.sub.3 H where R is fluorine or an alkyl group or a fluorinated alkyl group, R preferably being F or CF.sub.3, and more preferably CF.sub.3, and 1% to 60% by weight of a solvent selected from the group formed by sulpholane, dimethylsulphoxide and dioxanes, preferably sulpholane.
Abstract:
An improved process for regenerating an alkylation catalyst comprising fluorosulfuric acid, said catalyst being at least partially deactivated, which comprises the method of:(1) removing a portion of the fluorosulfuric acid from said catalyst by contacting same with a paraffin to form a liquid acid phase containing fluorosulfuric acid and an organic sludge formed during said alkylation and a gas phase containing said paraffin and fluorosulfuric acid;(2) contacting the liquid acid phase formed in step (1) with water to form an acid-water mixture, thereby coverting at least a portion of the fluorosulfuric acid contained therein to hydrogen fluoride and sulfuric acid;(3) removing at least a portion of the hydrogen fluoride from said acid-water mixture formed in step (2) by contacting same with a paraffin to form a gaseous phase containing hydrogen fluoride and paraffin; and(4) treating the gas phases formed in steps (1) and (3) with sulfur trioxide to regenerate the fluorosulfuric acid.In a preferred embodiment, at least a portion of the regenerated fluorosulfuric acid is recycled to the alkylation zone for use as an alkylation catalyst therein.
Abstract:
Sulfur dioxide is employed as a stripping agent in the regeneration of a deactivated or partially deactivated alkylation catalyst containing fluorosulfuric acid, thereby eliminating undesirable reactions that occur between the acid component of said catalyst and the hydrocarbon stripping agents normally employed in conventional fluorosulfuric acid regeneration processes.
Abstract:
NN'N" tris (alkyl) phosphoric triamide alkylation aids of the formula ##EQU1## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from straight or branched chain alkyl having 10 to 24 carbon atoms each, for use in strong acid catalyzed reactions wherein alkylatable hydrocarbons are alkylated with alkylating agents. Also, alkylation processes employing such alkylation aids.
Abstract translation:NN'N“三(烷基)磷酸三酰胺烷基化助剂,式NH-R1 | O = P-NH-R2 | NH-R3其中R1,R2和R3选自具有10至24个的直链或支链烷基 碳原子,用于强酸催化反应,其中可烷基化的烃与烷基化剂烷基化。 此外,使用这种烷基化助剂的烷基化方法。
Abstract:
A hydrocarbon conversion process for producing high octane alkylate by contacting a saturated hydrocarbon, preferably a C4C6 isoparaffin, and an olefin, preferably a C2-C12 monoolefin, with a catalyst formed from a strong halosulfuric acid and a catalyst moderator. The catalyst moderator is selected from (1) water, (2) C1-C7 monohydroxy alcohols, (3) difluorophosphoric acid, (4) C2-C5 monoether, (5) aromatic sulfonic acid, and (6) minor amounts of sulfuric acid.
Abstract:
A strong acid catalyzed alkylation process wherein an isoparaffin is alkylated with an alkylating agent such as olefin hydrocarbon, alkyl sulfates, in the liquid phase, at a superatmospheric pressure and a temperature in the range of from below zero to about 100*F., and wherein gaseous carbon dioxide is dissolved in the strong acid catalyst.
Abstract:
AN ALKYLATION PROCESS COMPRISING CONTACTING A PARAFFIN, PREFERABLY A C4-C6 ISOPARAFFIN, AND A STRONG ALYLATION CATALYST IN AN ALKYLATION ZONE WITH A FIRST OLEFIN-CONTAINING STREAM SUBSTANTIALLY FREE OF ISOBUTYLENE AND 2METHYL-BUTENE-1 AND A SECOND OLEFIN-CONTAINING STREAM COMPRISING ISOBUTYLENE OR 2-METTHYL-BUTENE-1, WHERE THE FIRST AND SECOND OLEFIN-CONTAINING STREAMS ARE INTRODUCED INTO THE ALKYLATION ZONE AT SEPARATE POINTS ALONG THE ZONE, THE POINTS SITUATED SO AS TO PREVENT ANY APPRECIABLE MIXING OF THE FIRST AND SECOND OLEFIN-CONTAINING STREAMS WITH EACH OTHER PRIOR TO CONTACITNG THE CATALYST AND RECOVERING ALKYLATE PRODUCT OF HIGH OCTANE NUMBER.