A process for the production of a zeolitic material comprising one or more zeolite intergrowth phases of one or more zeolites having a CHA-type framework structure comprising SiO.sub.2 and X.sub.2O.sub.3, and one or more zeolites having an AFT-type framework tructure comprising SiO.sub.2 and X.sub.2O.sub.3, wherein X is a trivalent element, and wherein said process comprises: (1) preparing a mixture comprising one or more sources for SiO.sub.2, one or more sources for X.sub.2O.sub.3, and seed crystals comprising a zeolitic material, said zeolitic material comprising SiO.sub.2 and X.sub.2O.sub.3 in its framework structure and having a CHA-type framework structure; (2) heating the mixture prepared in (1) for obtaining a zeolitic material comprising one or more zeolite intergrowth phases; and (R) subjecting the zeolitic material obtained in (2) to a procedure for removing at least a portion of X from the framework structure of the zeolitic material.

The present disclosure is directed to a method of manufacture of co-crystallized *BEA/MOR zeolites. This is accomplished by using an improved sol-gel formulation including a water-soluble fraction of ODSO as an additional component. The resulting products are, or contain, co-crystallized *BEA/MOR zeolites, whereas in the absence of the ODSO, the resulting products are zeolite beta.

Methods are provided for hydrothermal synthesis of porous crystalline materials. The method generally comprises forming a solution of precursors and reagents in effective ratios for a porous crystalline material including a fluoride-containing mineralizer, and water-soluble oxidized disulfide oil. The solution is hydrothermally treated under effective conditions and for an effective time to synthesize porous crystalline materials.

The present disclosure is directed to methods of zeolite Y synthesis. Two-stage temperature crystallization methods are employed to synthesize nano-sized zeolite Y that possesses improved crystallinity, surface area, and pore volume compared to zeolite Y produced using alternative methods.

Provided are a method for producing a modified aluminosilicate capable of highly selectively producing hydroquinones by a reaction of phenols and hydrogen peroxide under industrially advantageous conditions, a method for producing a catalyst for producing an aromatic dihydroxide compound, a catalyst containing a modified aluminosilicate, a method for producing an aromatic dihydroxide compound using the catalyst, and a modified aluminosilicate. The method for producing an aluminosilicate may include preparing a liquid in which sol-like silica containing water is contacted with a metal compound (AL) containing aluminum and oxygen to obtain an aluminosilicate having a specific range of a molar ratio of water to silica (HMR); treating the aluminosilicate with an acid; subjecting the treated product to primary calcination; and contacting the calcined product with a liquid containing one or more elements in Group 4 and Group 5 of the Periodic Table, followed by carrying out drying and secondary calcination.

A process for preparing an oxidic material comprising a zeolitic material having framework type AEI and a framework structure comprising a tetravalent element Y, a trivalent element X, and O, the process comprising preparing a synthesis mixture comprising water, a source of Y, a source of X comprising sodium, an AEI framework structure directing agent, and a source of sodium other than the source of X; and heating the synthesis mixture obtained from (i) to a temperature in the range of from 100 to 180 C. and keeping the synthesis mixture under autogenous pres-sure at a temperature in this range for a time in the range of at least 6 h, obtaining the oxidic material comprising a zeolitic material having framework type AEI and a framework structure comprising a tetravalent element Y, a trivalent element X, and O, comprised in its mother liquor; wherein the AEI framework structure directing agent according to (i) comprises a N, N-diethyl-2,6-dimethylpiperidinium cation.

Disclosed are crystalline mesoporous molecular sieves based on molecular sieve SSZ-91, methods for making mesoporous SSZ-91, and use of mesoporous SSZ-91 in hydroconversion applications. Mesoporous molecular sieve SSZ-91 is characterized as: having a low degree of faulting, having a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, being substantially phase pure, and having a total pore volume (measured at P/P.sub.0 of 0.95) in the mesopore diameter range is at least about 0.2 cc/g and wherein the micropore volume is at least 0.05 cc/g.