摘要:
The present invention relates to a method for the preparation of a treated zeolitic material having a BEA framework structure comprising the steps of: (i) providing a zeolitic material having a BEA framework structure, wherein the BEA framework structure comprises YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, and wherein the zeolitic material having a BEA framework structure is obtainable and/or obtained from an organotemplate-free synthetic process; (ii) calcining the zeolitic material provided in step (i) at a temperature of 650°C or more; and (iii) treating the calcined zeolitic material obtained from step (ii) with an aqueous solution having a pH of 5 or less, as well as to zeolitic materials per se preferably obtainable according to the inventive method and to their use, and to a process for converting oxygenates to olefins employing the inventive zeolitic materials.
摘要翻译:本发明涉及一种制备具有BEA骨架结构的经处理的沸石材料的方法,包括以下步骤:(i)提供具有BEA骨架结构的沸石材料,其中BEA骨架结构包含YO 2和X 2 O 3,其中Y 是四价元素,X是三价元素,并且其中具有BEA骨架结构的沸石材料可以从有机无模板合成方法获得和/或获得; (ii)在650℃以上的温度下煅烧步骤(i)中提供的沸石材料; 和(iii)用pH为5以下的水溶液以及根据本发明方法可获得的沸石材料本身及其用途来处理由步骤(ii)获得的煅烧沸石材料及其用途 使用本发明的沸石材料将含氧物转化为烯烃的方法。
摘要:
The present invention relates to a process for the preparation of butadiene comprising (i) providing a gas stream G- comprising ethanol; (ii) contacting the gas stream G- provided in (i) with a catalyst, thereby obtaining a gas stream G-2 comprising butadiene; wherein the catalyst comprises a crystalline material supporting one or more catalytically active metals M, as well as to the use of the crystalline material supporting one or more catalytically active metals M.
摘要:
A method of dehydration of at least one compound (A) comprising, in the chain form, -at least one hydroxyl group and -at least one carbonyl functionality selected from the group consisting of aldehyde (CHO), ke- tone (CO) and carboxylic acid (COOH) and mixtures thereof,in the presence of at least one zeolite which is (a) obtainable from an organotemplate-free synthetic process and (b) isomorphously substituted comprising silicon, aluminum and at least one further metal wherein the at least one further metal is selected from the group consisting of the elements of Group 3 to 14 in Period 4 to 6and mixtures thereof.
摘要:
Provided are a process for the preparation of an iron containing zeolitic material having an AEI framework structure using a quaternary phosphonium cation, as well as an iron containing zeolitic material per se as obtainable or obtained according to the process. Furthermore, an exhaust gas treatment system comprising the iron containing zeolitic material and the use of the iron containing zeolitic material as a catalyst are provided.
摘要:
The present invention relates to a catalyst for the preparation of butadiene comprising Hf and two or more further catalytically active metals M1 and M2, wherein the two or more fur- ther catalytically active metals M1 and M2 are selected from the group consisting of Zr, Zn, Cu and combinations of two or more thereof, and wherein M1 is different from M2; as well as to a process for the preparation of butadiene comprising (i) providing a gas stream G-1 comprising ethanol; (ii) contacting the gas stream G-1 provided in (i) with theinventive catalyst, thereby obtaining a gas stream G-2 comprising butadiene; wherein the catalyst comprises Hf and two or more further catalytically active metals M and M2, wherein the twoor morefurther catalytically active metals M1 and M2 are selected from the group consisting of Zr, Zn, Cu and combinations of two or more thereof, and wherein M1 is different from M2, as well as to the use of the catalyst comprises Hf and two or more further catalytically active 1 metals M1 and M2, wherein the twoor morefurther catalytically active metals M1 and M2 are selected from the group consisting of Zr, Zn, Cu and combinations of two or more thereof, and wherein M1 is different from M2.
摘要:
Provided is a process for the preparation of a zeolitic material having a BEA framework structure comprising the steps of: (i) providing one or more zeolitic materials having a BEA framework structure, wherein the BEA framework structure comprises Y0 2 and X 2 O 3 , wherein Y is a tetravalent element, and X is a trivalent element; (ii) subjecting the one or more zeolitic materials provided in step (i) to a procedure for removing at least a portion of X, preferably tetrahedrally coordinated X, from the BEA framework structure; wherein the Y:X molar ratios of the one or more zeolitic materials provided in step (i) are respectively comprised in the range of from 1 to 50.
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 production of a zeolitic material having a BEA-type framework structure comprising YO 2 and X 2 O 3 , wherein said process comprises the steps of (1) preparing a mixture comprising one or more sources for YO 2 , one or more sources for X 2 O 3 , and seed crystals comprising one or more zeolitic materials having a BEA-type framework structure; (2) crystallizing the mixture obtained in step (1); and (3) subjecting the zeolitic material having a BEA-type framework structure obtained in step (2) to an ion-exchange procedure with Cu and/or Fe; wherein Y is a tetravalent element, and X is a trivaient element, wherein the mixture provided in step (1) and crystallized in step (2) does not contain an organotemplate as structure-directing agent, and wherein the total amount of Cu and/or Fe in the ion-exchanged material obtained in step (3) ranges from 0.1 to 25 wt.-% calculated as Fe 2 O 3 and CuO, as well as to a zeolitic material having a BEA-type framework structure which may be obtained according to said process, and to a method for the treatment of NO x by selective catalytic reduction (SCR) using said zeolitic material.
摘要翻译:本发明涉及一种生产具有包含YO 2和X 2 O 3的BEA型骨架结构的沸石材料的方法,其中所述方法包括以下步骤:(1)制备包含一种或多种Y 2 O 2源,一种或多种 X2O3的来源,以及包含一种或多种具有BEA型骨架结构的沸石材料的晶种; (2)使步骤(1)中获得的混合物结晶; 和(3)使具有步骤(2)中获得的BEA型骨架结构的沸石材料与Cu和/或Fe进行离子交换程序; 其中Y是四价元素,X是三元素,其中在步骤(1)中提供并在步骤(2)中结晶的混合物不含作为结构导向剂的有机模板,并且其中Cu和/ 在步骤(3)中获得的离子交换材料中的Fe或Fe按照Fe 2 O 3和CuO计算为0.1至25重量%,以及具有BEA型骨架结构的沸石材料,其可以根据所述 方法以及使用所述沸石材料通过选择性催化还原(SCR)处理NOx的方法。
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。