摘要:
The present invention relates to a zeolitic material comprising SiO 2 and Ga 2 O 3 in its framework structure, wherein the zeolitic material comprises one or more metal cations M selected from the group consisting of Sr, Zr, Cr, Mg, Mo, Fe, Co, Ni, Cu, Zn, Ru, Rh, Pd, Ag, Os, Ir, Pt, Au, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Sc, and mixtures of two or more thereof, wherein the one or more metal cations M are located at the ion-exchange sites of the framework structure of the zeolitic material, wherein the zeolitic material contains 1 wt.-% or less of trivalent elements, calculated as the respective element, other than Ga and other than any trivalent met-al cations among the one or more metal cations M, based on 100 wt. % of Si, calculated as SiO 2 , in the zeolitic material, and furthermore to a method for its production as well as to a process for the treatment of NO x using the inventive zeolitic materials and to an apparatus for the treatment of a gas stream containing NO x , the apparatus containing the inventive zeolitic materials, and finally to the use of the zeolitic materials according to the present invention.
摘要:
The present invention relates to a catalytic material for the preparation of one or more of 4,4'- methylenedianiline, 2,2'-methylenedianiline, 2,4'-methylenedianiline, and oligomers of two or more thereof, the catalytic material comprising an oxidic support, wherein the oxidic support comprises an element EOS1 selected from the group consisting of Ti, Zr, Al, Si, and mixtures of two or more thereof, and further comprising a supported material supported on the oxidic support, wherein the supported material comprises an element ESM1 selected from the group consisting of Ti, Zr, V, Nb, Ta, Mo, W, Ge, Sn, Sc, Y, La, Ce, Nd, Pr, Hf, Cr, Fe, Co, Ni, Cu, Zn, Pb, and mixtures of two or more thereof. Further, the present invention relates in particular to a process for the preparation of a catalytic material and to a process for the preparation of one or more of 4,4'-methylenedianiline, 2,2'-methylenedianiline, 2,4'-methylenedianiline and oligomers of two or more thereof.
摘要:
The present invention relates to a zeolitic material having the IWR type framework structure, wherein the zeolitic material comprises YO 2 and X 2 O 3 in its framework structure, wherein Y is a tetravalent element and X is a trivalent element, and wherein the framework structure of the zeolitic material comprises less than 5 weight-%weight-% of Ge calculated as GeO 2 and based on 100 weight-%weight-%of YO 2 contained in the framework structure, and less than 5 weight-%weight-% of B calculated as B 2 O 3 and based on 100 weight-%weight-% of X 2 O 3 contained in the framework structure. Further, the present invention relates to a process for preparing a zeo-litic material having the IWR type framework structure, wherein the zeolitic material comprises YO 2 and X 2 O 3 in its framework structure, wherein Y is a tetravalent element and X is a trivalent element.
摘要:
A process for preparing a zeolitic material comprising Ti, having framework type CHA and having a framework structure which comprises Si and O, said process comprising (i) preparing a pre-synthesis mixture comprising water, a CHA framework structure directing agent, and a zeolitic material comprising Ti, having framework type MFI and having a framework structure which comprises Si and O; (ii) removing water from the pre-synthesis mixture obtained from (i) by heating the pre-synthesis mixture to a temperature of less than 100°C at a pressure of less than 1 bar (abs); (iii) hydrothermally crystallizing the zeolitic material comprising Ti, having framework type CHA and having a framework structure which comprises Si and O.
摘要:
The present invention relates to a process for the preparation of a zeolitic material having a CHA framework structure, said zeolitic material comprising zeolite crystals having a core-shell structure, wherein said process comprises the steps of (1) providing a mixture comprising one or more sources for Z 2 O 5 , one or more sources for X 2 O 3 , optionally one or more structure directing agents, and seed crystals having a CHA framework structure, wherein the CHA framework structure of the seed crystals comprises Y0 2 , X 2 O 3 , and optionally Z 2 O 5 , and wherein the seed crystals have a diameter of 450 nm or greater; (2) crystallizing the mixture provided in (1) to afford zeolite crystals comprising a core of seed crystal provided in step (1 ) and a shell crystallized on the seed crystal; wherein Z is a pentavalent element, Y is a tetravalent element, and X is a trivalent element, and wherein preferably one or more sources for YO 2 are further provided in step (1 ).
摘要翻译:本发明涉及制备具有CHA骨架结构的沸石材料的方法,所述沸石材料包含具有核 - 壳结构的沸石晶体,其中所述方法包括以下步骤:(1) )提供一种混合物,该混合物包含用于Z 2 O 5 5的一种或多种来源,用于X 2 O 3 3的一种或多种来源, 任选的一种或多种结构导向剂和具有CHA骨架结构的晶种,其中晶种的CHA骨架结构包含Y0 2,X 2 O 其中所述晶种具有450nm或更大的直径;以及其中所述晶种具有450nm或更大的直径; (2)使(1)中提供的混合物结晶以得到包含步骤(1)中提供的晶种核和在晶种上结晶的壳的沸石晶体; 其中Z是五价元素,Y是四价元素,并且X是三价元素,并且其中优选在步骤(1)中进一步提供一种或多种YO 2的来源。 p>
摘要:
Zeolitic materials of the LEV-type structure and methods for their production are provided. The method for producing of the zeolitic material having an LEV-type structure comprising Y0 2 and optionally comprising X 2 O 3 comprises the steps of: (1) preparing a mixture comprising one or more sources for Y0 2 , one or more solvents, and optionally comprising seed crystals; and (2) crystallizing the mixture obtained in step (1), wherein Y is a tetravalent element, and X is a trivalent element, the mixture crystallized in step (2) contains 3 wt.-% or less of one or more metals M based on 100 wt-% of Y0 2 , even more preferably contains no metal M, wherein M stands for sodium or potassium.
摘要翻译:提供LEV型结构的沸石材料及其生产方法。 制备具有包含YO 2和任选地包含X 2 O 3的LEV型结构的沸石材料的方法包括以下步骤:(1)制备包含一种或多种用于Y02,一种或多种溶剂和任选包含晶种的源的混合物; 和(2)使步骤(1)中得到的混合物结晶,其中Y是四价元素,X是三价元素,在步骤(2)中结晶的混合物含有3重量%或更少的一种或多种金属M 基于100重量%的Y02,甚至更优选不含金属M,其中M代表钠或钾。
摘要:
A process for the preparation of an isomorphously substituted layered silicate comprising (1) providing a mixture containing silica or a precursor thereof, at least one structure directing agent (SDA) allowing for the crystallization of the layered silicate, and water; (2) heating the mixture obtained according to (1) under hydrothermal conditions; (3) adding at least one source at least one element suitable for isomorphous substitution; (4) heating the mixture obtained according to (3) under hydrothermal conditions.
摘要:
A process for the preparation of a silicate compound, comprises (1) providing at least one layered silicate; and (2) mixing the layered silicate with water and at least one silicon containing compound according to formula R 4-m Si[-(SiR 2 ) n -R] m wherein at least one residue R is a leaving group and none of the residues R contains Si; m is 0, 1, 2, 3, 4; and n is an integer greater than or equal to 0.
摘要:
The present invention relates to a crystalline material having a framework structure comprising O and one or more tetravalent elements Y, and optionally comprising one or more trivalent elements X, wherein the crystalline material displays a crystallographic unit cell of the monoclinic space group C2, wherein the unit cell parameter a is in the range of from 14.5 to 20.5 Å, the unit cell parameter b is in the range of from 14.5 to 20.5 Å, the unit cell parameter c in the range of from 11.5 to 17.5 Å and the unit cell parameter β is in the range of from 109 to 118°, wherein the framework density is in the range of from 11 to 23 T-atoms/1000 Å3 wherein the framework structure comprises 12 membered rings, and wherein the framework structure displays a 2-dimensional channel dimensionality of 12 membered ring channels. The present invention further relates to a process for the production of said material, as well as to its use, in particular as a catalyst or catalyst component.
摘要:
The present invention relates to a rare earth element containing zeolitic material having a framework structure selected from the group consisting of AEI, AFT, AFV, AFX, AVL, CHA, EMT, GME, KFI, LEV, LTN, and SFW, including mixtures of two or more thereof, the framework structure of the zeolitic material comprising SiO 2 and X 2 O 3 , wherein X stands for a trivalent element, wherein the zeolitic material displays an SiO 2 : X 2 O 3 molar ratio in the range of from 2 to 20, and wherein the zeolitic material contains one or more rare earth elements as counter-ions at the ion exchange sites of the framework structure. Furthermore, the present invention relates to a process for the production of the inventive rare earth element containing zeolitic material as well as to the use of the inventive rare earth element containing zeolitic material as such and as obtainable and/or obtained according to the inventive process.