Abstract: The present invention relates to a method for the preparation of a molecular sieve of the CHA-type as well as catalytic applications thereof.

Abstract: The present invention relates to a method for the preparation of a molecular sieve of the CHA-type as well as catalytic applications thereof.

Abstract: A method for the removal of nitrous oxide from off gas by direct decomposition or by selective catalytic reduction in presence of a reducing agent, comprising the steps of contacting the gas directly or together with the reducing agent or a precursor thereof with a catalyst comprising an Fe-AEI zeolite material essentially free of alkali metal ions (Alk) and having the following molar compositions: SiO2: oAl2O3: pFe: qAlk wherein o is in the range from 0.001 to 0.2; wherein p is in the range from 0.001 to 0.2; wherein Alk is one or more of alkali ions and wherein q is less than 0.02.

Abstract: The main object of the present invention is to provide a new method for preparing the copper-containing silicoaluminate form of the AEI zeolite structure by means of a direct synthesis methodology. This new process involves combining a organometallic copper-complex with an additional organic molecule capable of directing the crystallisation of the silicoaluminate form of the AEI zeolite structure as organic structure-directing agents (OSDAs).

Abstract: The main object of the present invention is to provide a new method for preparing the copper-containing silicoaluminate form of the AEI zeolite structure by means of a direct synthesis methodology. This new process involves combining a organometallic copper-complex with an additional organic molecule capable of directing the crystallisation of the silicoaluminate form of the AEI zeolite structure as organic structure-directing agents (OSDAs).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: nX2O3:YO2:aA:mOSDA1:zH2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: The present invention relates to a process for the direct synthesis of a material with a CHA zeolite structure in the silicoaluminate form thereof containing copper atoms, which comprises at least the following steps: (i) Preparation of a mixture which contains at least one water source, one copper source, one polyamine, one source of Y tetravalent element, one source of X trivalent element, the tetraethylammonium cation as the only OSDA and one source of alkaline or alkaline earth (A) cations, and wherein the synthesis mixture has the following molar composition: YO2:aX2O3:bOSDA:cA:dH2O:eCu:fpolyamine (ii) Crystallization of the mixture obtained in (i) in a reactor; (iii) Recovery of the crystalline material obtained in (ii).

Abstract: The present invention provides a new method for preparing the copper-containing silicoaluminate form of the AEI zeolite structure by means of a direct synthesis methodology. This new process involves combining a organometallic copper-complex with an additional organic molecule capable of directing the crystallization of the silicoaluminate form of the AEI zeolite structure as organic structure-directing agents (OSDAs).

Abstract: A synthesis process for a crystalline material with the AEI zeolite structure, comprising (i) preparation of a mixture containing, at least, water, one zeolite with the FAU crystal structure as the only source of silicon and aluminum, a cyclic ammonium cation with alkyl substituents as the OSDA, and a source of alkaline or alkaline-earth cations (A), wherein the synthesis mixture has the following molar composition: SiO2:a Al2O3:b OSDA:c A:d H2O where a ranges between 0.001 and 0.2; where b ranges between 0.01 and 2; where c ranges between 0 and 2; where d ranges between 1 and 200; and wherein the mixture is free from phosphorous and fluorinated species, (ii) crystallisation of the mixture and, (iii) recovery of the crystalline material. Also, preparation of catalysts based on the AEI zeolite and application as a catalysts in processes including the selective catalytic reduction of NOx.

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: A method for the removal of nitrogen oxides from exhaust, flue or off gas by selective catalytic reduction in presence of ammonia as a reductant, comprising the steps of contacting the exhaust gas together with the ammonia or a precursor thereof with an SCR catalyst comprising a Fe-AEI zeolite material essentially free of alkali metal ions (Alk), having the following molar compositions: SiO2:oAl2O3:pFe:qAlk wherein o is in the range from 0.001 to 0.2; wherein p is in the range from 0.001 to 0.2; wherein Alk is one or more of alkali metal ions and wherein q is below 0.02.

Abstract: A method for the removal of nitrous oxide from off gas by direct decomposition or by selective catalytic reduction in presence of a reducing agent, comprising the steps of contacting the gas directly or together with the reducing agent or a precursor thereof with a catalyst comprising an Fe-AEI zeolite material essentially free of alkali metal ions (Alk) and having the following molar compositions: SiO2:o Al2O3:p Fe:q Alk wherein o is in the range from 0.001 to 0.2; wherein p is in the range from 0.001 to 0.2; wherein Alk is one or more of alkali ions and wherein q is less than 0.02.

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).

Abstract: Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q?, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).