The invention relates to a process for preparing molecular sieves, such as ZSM-57, using one or more structure directing agents selected from the group consisting of N.sup.1,N.sup.1,N.sup.5,N.sup.5-tetraethyl-N.sup.1,N.sup.5-dimethylpentane-1,5-diaminium, 1-ethyl-1-(5-(1-methylpiperidin-1-ium-1-yl)pentyl)piperidin-1-ium, 1,1-(hexane-1,6-diyl)bis(1-ethylpiperidin-1-ium), and 1,1-diethylpyrrolidin-1-ium.

The invention relates to a heterogeneous method for oligomerising alkenes in order to produce hydricarbons within a diesel fraction in the present of a catalyst based on the ITQ-39 zeolite. The oligomerisation method described in the present invention includes at least: a. feeding a catalyst containing at least the ITQ-39 zeolitic material into the reactor; b. supplying the reactor with a stream that includes at least one olefinic compound; and c. enabling the catalyst containing at least the ITQ-39 material and the organic compound to remain in contact during the time required for the reaction to take place.

A method for preparing 2-alkylanthracene includes the step of separating 2-alkylanthracene from a reaction product of anthracene alkylation reaction. The anthracene alkylation reaction is a reaction of anthracene and an alkylation reagent under an alkylation condition and in the presence of an alkylation reaction solvent and a catalyst. The reaction product of the anthracene alkylation reaction contains anthracene and the product of a series of alkylanthracenes containing 2-alkylanthracene.

A method for preparing 2-alkylanthracene includes the step of separating 2-alkylanthracene from a reaction product of anthracene alkylation reaction. The anthracene alkylation reaction is a reaction of anthracene and an alkylation reagent under an alkylation condition and in the presence of an alkylation reaction solvent and a catalyst. The reaction product of the anthracene alkylation reaction contains anthracene and the product of a series of alkylanthracenes containing 2-alkylanthracene.

Production of C.sub.16 to C.sub.30 saturated hydrocarbon by alkylating a reactant aromatic hydrocarbon with a C.sub.6 to C.sub.24 olefin to produce alkylation product comprising a C.sub.16 to C.sub.30 alkyl aromatic hydrocarbon and subsequent hydrogenation of the alkylation product to produce hydrogenated product comprising a C.sub.16 to C.sub.30 saturated hydrocarbon. The C.sub.16 to C.sub.30 alkyl aromatic hydrocarbon comprises an aromatic C.sub.6 ring and one or more C.sub.6 to C.sub.24 alkyl groups attached thereto. The C.sub.16 to C.sub.30 saturated hydrocarbon comprises a saturated C.sub.6 ring and one or more C.sub.6 to C.sub.24 alkyl groups attached thereto.

Production of C.sub.16 to C.sub.30 saturated hydrocarbon by alkylating a reactant aromatic hydrocarbon with a C.sub.6 to C.sub.24 olefin to produce alkylation product comprising a C.sub.16 to C.sub.30 alkyl aromatic hydrocarbon and subsequent hydrogenation of the alkylation product to produce hydrogenated product comprising a C.sub.16 to C.sub.30 saturated hydrocarbon. The C.sub.16 to C.sub.30 alkyl aromatic hydrocarbon comprises an aromatic C.sub.6 ring and one or more C.sub.6 to C.sub.24 alkyl groups attached thereto. The C.sub.16 to C.sub.30 saturated hydrocarbon comprises a saturated C.sub.6 ring and one or more C.sub.6 to C.sub.24 alkyl groups attached thereto.