The present disclosure relates to the preparation of pyridine derivatives, such as α-picoline or α-parvoline, and catalysts useful for the selective preparation of such pyridine derivatives. Particularly, the present disclosure relates to the selective preparation of certain pyridine derivative using dealuminated zeolite catalysts.

The present invention relates to an original process for the preparation of a catalyst in the form of an extrudate comprising an acid zeolite with the structural code MFI, the zeolite content being between 45% and 90% relative to the total mass of the catalyst, and a binder, and optionally containing a hydrogenating active phase, comprising at least a) the mixture of said MFI zeolite and the binder, the average size of the elementary particles of said MFI zeolite being between 110 and 800 nm, b) the addition of said mixture a) of a peptizing agent c) the addition to said mixture of a neutralizing agent d) the shaping by extrusion of the mixture e) optionally, the drying of the solid, f) the heat treatment of the said solid obtained in the presence of water vapor at a temperature between 400 and 1000° C. in the presence of an air flow containing from 1 to 60% by volume of water, and g) optionally, the introduction of one or more precursors of a hydrogenating active phase on the solid.

A supported metal catalyst and a method of forming the same is provided. The supported metal catalyst according to embodiments of the present invention is formed by a method comprising supporting a metal on a support and treating the support supporting the metal with an acid. The method of forming a supported metal catalyst according to embodiments of the present invention comprises supporting a metal on a support and treating the support supporting the metal with an acid.

A method for producing a hierarchical mesoporous beta includes mixing a beta zeolite with an aqueous metal hydroxide solution and heating the beta zeolite and the aqueous metal hydroxide mixture to produce a desilicated beta zeolite, contacting the desilicated beta zeolite with an ammonium salt solution to produce an intermediate hierarchical mesoporous beta zeolite, and treating the intermediate hierarchical mesoporous beta zeolite with an acidic solution to produce the hierarchical mesoporous beta zeolite. The hierarchical mesoporous beta zeolite includes a molar ratio of silicon to aluminum of greater than 12.5, a total pore volume of greater than or equal to the total pore volume of the intermediate hierarchical mesoporous beta zeolite, and an average mesopore size of greater than or equal to the average mesopore size of the hierarchical mesoporous beta zeolite. The method may also include calcining the intermediate hierarchical mesoporous beta zeolite.

A method of preparing hydrodesulfurization catalysts having cobalt and molybdenum sulfide deposited on a support material containing mesoporous silica. The method utilizes a sulfur-containing silane that dually functions as a silica source and a sulfur precursor. The method involves an one-pot strategy for hydrothermal treatment and a single-step calcination and sulfidation procedure. The application of the hydrodesulfurization catalysts in treating a hydrocarbon feedstock containing sulfur compounds to produce a desulfurized hydrocarbon stream is also specified.

A method of preparing hydrodesulfurization catalysts having cobalt and molybdenum sulfide deposited on a support material containing mesoporous silica. The method utilizes a sulfur-containing silane that dually functions as a silica source and a sulfur precursor. The method involves an one-pot strategy for hydrothermal treatment and a single-step calcination and sulfidation procedure. The application of the hydrodesulfurization catalysts in treating a hydrocarbon feedstock containing sulfur compounds to produce a desulfurized hydrocarbon stream is also specified.

The present application discloses a molecular sieve Cu-SSZ-13, its synthesis method, a catalyst and the application of the catalyst in the treatment of exhaust gas of motor vehicles, especially its application in the treatment of exhaust gas of diesel vehicles, belonging to the field of catalytic materials. The content of copper calculated on the basis of CuO in the molecular sieve Cu-SSZ-13 is 2.56 to 3.69 wt %, and the content of non-framework aluminum in the molecular sieve before adding copper is 0 to 8 wt %. The Cu-SSZ-13 of the present application has a specific combination of contents of copper and non-framework aluminum, improves the selectivity of N.sub.2 generated in the selective catalytic reduction of ammonia, reduces the selectivity of N.sub.2O, and can control the N.sub.2O in the product within 15 ppm. Cu-SSZ-13 as a catalyst has good resistance to hydrothermal aging, and has significant performance advantages in the application in the treatment of exhaust gas of diesel vehicles.

A hydrophobic zeolite which has a water adsorption of (6 g/100 g zeolite) or less at 25° C. at RH 60% and a toluene adsorption of (9 g/100 g zeolite) or more at 25° C. under 0.01 kPa.

A method for upgrading pyrolysis oil includes contacting a pyrolysis oil feed with hydrogen in the presence of a mixed metal oxide catalyst in a slurry reactor to produce an intermediate stream comprising light aromatic compounds comprising mono-aromatic compounds, di-aromatic compounds, or both, passing the intermediate stream to a hydrocracking reactor, contacting the intermediate stream with hydrogen in the presence of a hydrocracking catalyst in a hydrocracking reactor to produce a hydrocracking effluent comprising aromatic compounds having six to nine carbon atoms, passing the hydrocracking effluent to a transalkylation reactor, and contacting the hydrocracking effluent with hydrogen in the presence of a transalkylation catalyst in the transalkylation reactor to produce a transalkylation effluent comprising xylenes.

A process for preparing an extrudable composition comprising a titanium-containing zeolitic material having framework type MWW, the process comprising providing a titanium-containing zeolitic material having framework type MWW, having a water absorption capacity of at least 11 weight-%, subjecting the titanium-containing zeolitic material having framework type MWW an acid treatment, optionally incorporating zinc in the acid-treated titanium-containing zeolitic material having framework type MWW; preparing a composition comprising the titanium-containing zeolitic material having framework type MWW obtained from (ii) or (iii), a precursor of a silica binder, water, and a kneading agent, wherein the composition does not comprise a polyethylene oxide.