Compositions and methods for preparing mesoporous and/or mesostructured materials from low SAR zeolites are provided herewith. In particular, methods are provided that involve: (a) providing a low SAR zeolite, (b) optionally subjecting the low SAR zeolite to an acid framework modification, and (c) subjecting the framework-modified zeolite to a mesopore formation treatment. The resulting mesoporous zeolites can have bi-modal mesoporosity and higher aluminum contents relative to existing mesoporous zeolites.

The present invention relates to a process for the conversion of 2-aminoethanol to ethane-1,2-diamine and/or linear polyethylenimines of the formula H.sub.2N—[CH.sub.2CH.sub.2NH].sub.n—CH.sub.2CH.sub.2NH.sub.2 wherein n≥1 comprising: (i) providing a catalyst comprising a zeolitic material having the MOR framework structure comprising YO.sub.2 and X.sub.2O.sub.3, wherein Y is a tetravalent element and X is a trivalent element, said zeolitic material containing copper as extra-framework ions; (ii) providing a gas stream comprising 2-aminoethanol and ammonia; (iii) contacting the catalyst provided in (i) with the gas stream provided in (ii) for converting 2-aminoethanol to ethane-1,2-diamine and/or linear polyethylenimines.

Compositions and methods for preparing mesoporous and/or mesostructured materials from low SAR zeolites are provided herewith. In particular, methods are provided that involve: (a) providing a low SAR zeolite, (b) optionally subjecting the low SAR zeolite to an acid framework modification, and (c) subjecting the framework-modified zeolite to a mesopore formation treatment. The resulting mesoporous zeolites can have bi-modal mesoporosity and higher aluminum contents relative to existing mesoporous zeolites.

The present invention pertains to a mordenite zeolite having excellent particle uniformity, and a method for preparing same, the method including a step for providing an aqueous solution in which a silica precursor is dissolved; a step for providing an aqueous solution in which a structure-inducing substance and an alumina precursor are dissolved; a step for providing an aqueous solution in which a surfactant is dissolved; a step for preparing a silica-alumina aqueous solution by mixing and stirring the basic silica suspension and the alumina aqueous solution; a step for preparing a zeolite synthesis composition by adding the surfactant aqueous solution to the silica-alumina aqueous solution; a step for gelling the zeolite synthesis composition; and a step for crystallizing the gelled zeolite synthesis composition.

The methods for synthesizing mordenite (MOR) zeolite crystals described herein utilize a combination of organics and produce MOR crystals with reduced size, higher Si/Al ratio, fewer stacking faults, less occluded organics in the final product, and a longer catalyst lifetime.

The methods for synthesizing mordenite (MOR) zeolite crystals described herein utilize a combination of organics and produce MOR crystals with reduced size, higher Si/Al ratio, fewer stacking faults, less occluded organics in the final product, and a longer catalyst lifetime.

A process for preparing a zeolitic material having a zeolitic framework structure which exhibits a molar ratio (aAl.sub.2O.sub.3):SiO.sub.2 or a crystalline precursor thereof, comprising (i) preparing a mixture comprising H.sub.2O, one or more compounds comprising Si from which SiO.sub.2 in the zeolitic framework structure is formed, said one or more compounds comprising a silica gel exhibiting a molar ratio (c H.sub.2O):SiO.sub.2 and optionally one or more compounds comprising Al from which Al.sub.2O.sub.3 in the zeolitic framework structure is formed; (ii) subjecting the mixture obtained in (i) to crystallization at a crystallization temperature in the range of from 110 to 350 C., preferably in the range of from 190 to 350 C., and for a crystallization time in the range of from 0.1 to 48 h.

A process for converting a feedstock comprising an organic compound to a conversion product by contacting said feedstock at organic compound conversion conditions with a catalyst comprising a mordenite zeolite having a mesoporous surface area of greater than 30 m.sup.2/g and an average primary crystal size as measured by TEM of less than 80 nm.

Compositions and methods for preparing mesoporous and/or mesostructured materials from low SAR zeolites are provided herewith. In particular, methods are provided that involve: (a) providing a low SAR zeolite, (b) optionally subjecting the low SAR zeolite to an acid framework modification, and (c) subjecting the framework-modified zeolite to a mesopore formation treatment. The resulting mesoporous zeolites can have bi-modal mesoporosity and higher aluminum contents relative to existing mesoporous zeolites.

Compositions and methods for preparing mesoporous and/or mesostructured materials from low SAR zeolites are provided herewith. In particular, methods are provided that involve: (a) providing a low SAR zeolite, (b) optionally subjecting the low SAR zeolite to an acid framework modification, and (c) subjecting the framework-modified zeolite to a mesopore formation treatment. The resulting mesoporous zeolites can have bi-modal mesoporosity and higher aluminum contents relative to existing mesoporous zeolites.