The present invention is directed to a method of preparing a synthetic crystalline material, designated as JMZ-12, with a framework built up by the disorder AEI and CHA structures, substantially free of framework phosphorous and prepared preferably in the absence of halides such as fluoride ions. Such method comprises the step of heating a reaction mixture under crystallization conditions for a sufficient period to form a disordered zeolite having both CHA and AEI topologies, wherein the reaction mixture comprises at least one source of aluminum, at least one source of silicon, a source of alkaline or alkaline-earth cations, and a structure directing agent containing at least one source of quaternary ammonium cations and at least one source of alkyl-substituted piperidinium cations in a molar ratio of 0.20 to about 1.4. The resulting zeolites are useful as catalysts, particularly when used in combination with exchanged transition metal(s) and, optionally, rare earth metal(s).

A catalyst for the selective catalytic reduction of NOx comprises a zeolitic material which comprises (A) one or more zeolites having a GME framework structure containing YO.sub.2 and X.sub.2O.sub.3, and optionally further comprises one or more zeolites having a CHA framework structure containing YO.sub.2 and X.sub.2O.sub.3, and/or comprises, (B) one or more zeolite intergrowth phases of one or more zeolites having a GME framework structure containing YO.sub.2 and X.sub.2O.sub.3 and one or more zeolites having a CHA framework structure containing YO.sub.2 and X.sub.2O.sub.3, wherein Y is a tetravalent element, and X is a trivalent element, and the zeolitic material contains Cu and/or Fe as non-framework elements in an amount ranging from 0.1 to 15 wt. % calculated as the element and based on 100 wt. % of YO contained in the zeolitic material. Also provided are a process for its preparation, and a use in a method for the selective catalytic reduction of NOx.

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.

It relates to a microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof. It extends to a catalytic hydroxylation, by reaction of a compound of formula (I) with H.sub.2O.sub.2 in the presence of a catalyst comprising the zeolite.

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The present invention relates to a process for preparing a zeolite composite material composed of a mixture of AFX and BEA zeolites, comprising at least the following steps: i) mixing in aqueous medium, in particular proportions, of an FAU zeolite having an SiO.sub.2/Al.sub.2O.sub.3 mole ratio of between 30 and 100 and a parameter P.sub.ze such that: 3250<P.sub.ze<7200, with at least one zeolite of FAU structure type having an SiO.sub.2/Al.sub.2O.sub.3 mole ratio of between 2 and 30 (upper limit excluded), of at least one organonitrogen compound R, R being 1,5-bis(methylpiperidinium)pentane dihydroxide, 1,6-bis(methylpiperidinium)hexane dihydroxide and/or 1,7-bis(methylpiperidinium)heptane dihydroxide, of at least one source of at least one alkali metal and/or alkaline-earth metal M of valency n, to obtain a gel, ii) hydrothermal treatment of said gel obtained at a temperature of between 120° C. and 220° C., for a time of between 12 hours and 15 days.

A method is provided for forming composite of nano-sized zeolite beta and hierarchical zeolite Y. The method includes synthesizing a hierarchical zeolite Y, synthesizing a gel of a nano-sized zeolite beta, forming a slurry of the nano-sized zeolite beta from the gel, and mixing the hierarchical zeolite Y with the slurry to form a composite. The composite is dried and an extrudable paste is formed from the dried composite. The extrudable paste is extruded to form extrudates, which are calcined to form calcined extrudates.

The present invention relates to crystalline zeolites with an ERI/CHA intergrowth framework type and to a process for making said zeolites. The ERI content of the zeolites ranges from 10 to 85 wt.-%, based on the total weight of ERI and CHA. The zeolites may further comprise 0.1 to 10 wt.-% copper, calculated as CuO, and one or more alkali and alkaline earth metal cations in an amount of 0.1 to 5 wt.-%, calculated as pure metals. The process for making the zeolites with an ERI/CAH intergrowth framework type comprises a) the preparation of a first aqueous reaction mixture comprising a zeolite of the faujasite framework type, Cu-TEPA and a base M(OH), b) the preparation of a second aqueous reaction mixture comprising a silica source, an alumina source, an alkali or alkaline earth metal chloride, bromide or hydroxide, a quaternary alkylammonium salt and hexamethonium bromide, c) combining the two reaction mixtures, and d) heating the combination of the two reaction mixtures to obtain a zeolite with an ERI/CHA intergrowth framework type. The ERI/CHA intergrowth zeolite may subsequently be calcined. The zeolites according to the present invention are suitable SCR catalysts.

The present invention relates to a process for preparing zeolite crystals continuously, comprising the continuous introduction of a composition capable of generating zeolite crystals into at least one crystallization reaction zone subjected to stirring means, giving said composition a flow characterized by a relative Reynolds number Re.sub.r of between 40 and 50 000, and the continuous recovery of the crystals formed according to a flow characterized by a net Reynolds number Re.sub.n of between 1 and 1500.

The present invention relates to a process for preparing a zeolite composite material composed of a mixture of AFX and BEA zeolites, comprising at least the following steps: i) mixing in aqueous medium, in particular proportions, of an FAU zeolite having an SiO.sub.2/Al.sub.2O.sub.3 mole ratio of between 30 and 100 and a parameter P.sub.ze such that: 3250<P.sub.ze<7200, with at least one zeolite of FAU structure type having an SiO.sub.2/Al.sub.2O.sub.3 mole ratio of between 2 and 30 (upper limit excluded), of at least one organonitrogen compound R, R being 1,5-bis(methylpiperidinium)pentane dihydroxide, 1,6-bis(methylpiperidinium)hexane dihydroxide and/or 1,7-bis(methylpiperidinium)heptane dihydroxide, of at least one source of at least one alkali metal and/or alkaline-earth metal M of valency n, to obtain a gel, ii) hydrothermal treatment of said gel obtained at a temperature of between 120° C. and 220° C., for a time of between 12 hours and 15 days.

Provided is a method of producing a zeolite film continuously and efficiently. Zeolite is formed on a surface of a support using a method including: a first step of attaching zeolite fine crystals to a surface of a support; a second step of preparing synthetic gel for growing the fine crystals; a third step of putting the support and the synthetic gel into a reactor and performing hydrothermal synthesis; and a fourth step of cleaning the support subjected to the hydrothermal synthesis, in which in the third step, multiple containers arranged to be movable in a constant-temperature apparatus are each used as the reactor, the temperature and pressure for the hydrothermal synthesis is adjusted by the temperature and pressure in the constant-temperature apparatus, and the reaction time of the hydrothermal synthesis is adjusted by setting the time from when the reactor enters the constant-temperature apparatus to when the reactor exits the constant-temperature apparatus.