A method for producing a hydrocracking catalyst includes preparing a framework substituted Y-type zeolite, preparing a binder, co-mulling the framework substituted Y-type zeolite, the binder, and one or more hydrogenative metal components to form a catalyst precursor, and calcining the catalyst precursor to generate the hydrocracking catalyst. The framework substituted Y-type zeolite is prepared by calcining a Y-type zeolite at 500° C. to 700° C. to form a calcined Y-type zeolite. Further, the framework substituted Y-type zeolite is prepared by forming a suspension containing the calcined Y-type zeolite, the suspension having a liquid to solid mass ratio of 5 to 15, adding acid to adjust the pH of the suspension to less than 2.0, adding and mixing one or more of a zirconium compound, a hafnium compound, or a titanium compound to the suspension, and neutralizing the pH of the suspension to obtain the framework substituted Y-type zeolite.

An alkali metal ion modified titanium silicalite zeolite for gas phase epoxidation of propylene and hydrogen peroxide and a preparation method thereof. The method includes, at first step: preparing an alkali metal hydroxide modification solution; at second step: conducting controlled hydrothermal treatment on a TS-1 zeolite matrix by using an alkali metal hydroxide solution; and at third step: conducting post-treatment on the hydrothermally modified TS-1 zeolite, including solid-liquid separation, washing, drying and calcining. In the washing process, the modified TS-1 zeolite wet material is washed with a low concentration alkali metal hydroxide solution; alkali metal ions are reserved on the silicon hydroxyl of the modified titanium silicalite zeolite; and an infrared characteristic absorption band of a framework titanium active center modified by the alkali metal ions is in a range above 960 cm.sup.−1 and below 980 cm.sup.−1.

A composite catalyst containing heteroatom-doped zeolite for preparing light olefin using direct conversion of syngas formed by compounding component I and component II in a mechanical mixing mode. The active ingredient of component I is a metal oxide, and the component II is a heteroatom-doped zeolite. The zeolite topology is CHA or AEI, and the skeleton atoms include Al—P—O or Si—Al—P—O; the heteroatoms is at least one of divalent metal Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Zr, Mo, Cd, Ba and Ce, trivalent metal Ti and Ga, and tetravalent metal Ge. A weight ratio of the active ingredient in the component I to the component II is 0.1-20. The reaction process has high light olefin selectivity; the sum selectivity of the light olefin including ethylene, propylene and butylene can reach 50-90%, while the selectivity of a methane side product is less than 7%.

There is disclosed an organic-free, metal-containing zeolite Beta with a silica-to-alumina ratio (SAR) ranging from 5 and 20, and a metal content of at least 0.5 wt. %. There is also disclosed a method of making such a zeolite Beta without organic structure directing agent (SDA). The metal, which may comprise Fe or Cu, can be found in amounts ranging from 1-10 wt. %. A method of selective catalytic reduction of nitrogen oxides in exhaust gases using the disclosed zeolite is also disclosed.

Methods for cracking a hydrocarbon feed stream include contacting a hydrocarbon feed stream with a catalyst system in a catalytic cracking unit having a flowing gas stream to obtain a cracking product containing light olefins. The catalyst system includes at least a base catalyst. The base catalyst includes a pentasil zeolite. The pentasil zeolite includes from 0.01% to 5% by mass lithium atoms, as calculated on an oxide basis, based on the total mass of the pentasil zeolite. The flowing gas stream comprises hydrogen and, optionally, at least one additional carrier gas.

A phosphorus- and metal-containing core-shell molecular sieve has a core composed of a ZSM-5 molecular sieve, and a shell composed of a β molecular sieve. The phosphorus- and metal-containing core-shell molecular sieve has a phosphorus content, calculated as P.sub.2O.sub.5, of 1-10 wt %, and a metal content, calculated as metal oxide, of 0.1-10 wt %, based on the dry weight of the phosphorus- and metal-containing core-shell molecular sieve. It shows an .sup.27Al MAS NMR with a ratio of the area of a resonance signal peak at a chemical shift of 39±3 ppm to the area of a resonance signal peak at a chemical shift of 54±3 ppm of 0.01-∞:1.

The present invention relates to a process for the direct conversion of cellulose into glycols by using a non noble metal supported zeolite catalyst selected from Al—Ni—W/HY, Al—Ni—W/NaY and Al—Ni—W/Na-ZSM-5, wherein the ratio of the metal in the catalyst is in the range of 15%-12%-30% to 0%-3%-5%.

Disclosed herein is a process for preparing a zeolite material having an AFX framework structure including X2O3 and YO2 via interzeolite conversion, the process including (1) providing a mixture including a first zeolite material having a non-FAU framework structure including X2O3 and YO2 and an organic structure directing agent selected from the group consisting of diquaternary ammonium cation containing compounds, and (2) heating the mixture from (1) to form a second zeolite material having an AFX framework structure including X2O3 and YO2, wherein X is a trivalent element and Y is a tetravalent element, and where the organic structure directing agent is not 1,4-bis(1,4-diazabicyclo[2.2.2]octane)butyl dihydroxide when the first material zeolite has a CHA framework structure. Further disclosed herein is the zeolite material having an AFX framework structure as obtainable or obtained from the process, and a method of using the same as a catalytically active material.

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.

Embodiments of the present disclosure are directed to hydrocracking catalysts and methods of making same. The hydrocracking catalyst comprises a platinum encapsulated zeolite having a crystallinity greater than 20% determined by X-ray powder diffraction analysis.