摘要:
The present invention relates to a process for the treatment of a gas stream containing nitrogen oxides comprising the steps of: (1) providing a gas stream containing one or more nitrogen oxides; (2) contacting the gas stream provided in step (1) with a transition metal containing zeolitic material having a BEA-type framework structure for reacting one or more of the nitrogen oxides; wherein the zeolitic material is obtainable from an organotemplate-free synthetic process, as well as to an apparatus for the treatment of a gas stream comprising containing nitrogen oxides.
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:
Provided is a process for the preparation of a zeolitic material comprising YO 2 and X 2 O 3 in its framework structure, wherein Y stands for a tetravalent element and X stands for a trivalent element, wherein the process comprises:(i) preparing a mixture comprising one or more sources of YO 2 , one or more sources of X 2 O 3 , and H 2 O; (ii) grinding and/or mixing the mixture prepared in (i), wherein the energy intake of the mixture during the grinding and/or mixing procedure is in the range of from 0.3 to 200 kJ/kg of the mixture; (iii) heating the mixture obtained in (ii) at a temperature in the range of from 80 to 300 ℃ for crystallizing a zeolitic material comprising YO 2 and X 2 O 3 in its framework structure from the mixture; wherein the mixture prepared in (i) contains from 5 to 200 wt.% of H 2 O based on 100 wt.% of the one or more sources of YO 2 , calculated as YO 2 , contained in the mixture prepared in (i) and heated in (iii). Furthermore, a zeolitic material comprising YO 2 and X 2 O 3 in its framework structure as obtainable and/or obtained according to the process as well as the use of the material are provided.
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 X2O 3 , wherein said process comprises the steps of (1)preparing a mixture comprising one or more sources for YO 2 and one or more sources for X 2 O 3 ; (2)crystallizing the mixture obtained in step (1); (3)subjecting the zeolitic material having a BEA-type framework structure obtained in step (2) to an ion-exchange procedure with Cu; and (4) subjecting the Cu ion-exchanged zeolitic material obtained in step (3) to an ion-exchange procedure with Fe; wherein Y is a tetravalent element, and X is a trivalent element, wherein the mixture provided in step (1) and crystallized in step (2) further comprises seed crystals comprising one or more zeolitic materials having a BEA-type framework structure, and wherein the mixture provided in step (1) and crystallized in step (2) does not contain an organotemplate as a structure-directing agent, as well as to the zeolitic material having a BEA framework structure per se, and to its use, in particular in a method for the treatment of NO x by selective catalytic reduction (SCR).
摘要:
The present invention relates to shaped bodies of compositions comprising a porous aromatic covalent framework polymer, wherein the polymer comprises at least one monomer unit, the at least one monomer unit comprising at least one aromatic ring and the at least one monomer unit having at least three binding sites to adjacent monomer units in the polymer and a core, wherein the at least three binding sites are located on at least one atom of the core and wherein the at least one atom is free of covalent bonds to hydrogen; and at least one binder additive. The invention also relates to methods for the preparation of said shaped bodies and their uses.
摘要:
The invention relates to a method for tertiary mineral oil production, in which an aqueous suspension, comprising at least one porous metal-organic framework material,is injected through at least one injection borehole into a mineral oil deposit, and crude oil is withdrawn from the deposit through at least one production borehole. The invention further relates to the use of an aqueous suspension, comprising at least one porous metal-organic framework material. The invention further relates to the use of at least one porous metal-organic framework material or an aqueous suspension for tertiary mineral production.
摘要:
The present invention relates to a method for at least partly uptaking a spilled liquid comprising at least one liquid hydrocarbon, the method comprising the step of contacting the at least one liquid hydrocarbon with a binder agent comprising at least one porous metal-organic framework material, wherein the at least one metal-organic framework material comprises at least one organic compound coordinated to at least one metal ion, wherein the at least one organic com- pound is based on imidazole, which is unsubstituted or substituted with one or more substituents independently selected from the group consisting of C 1-6 alkyl, phenyl and benzyl. The invention further relates to the use of such a binder agent for at least partly uptaking the liquid.
摘要:
A process for preparing a zeolitic material having a zeolitic framework structure which exhibits a molar ratio (aAl 2 O 3 ) : SiO 2 or a crystalline precursor thereof, comprising (i) pre-paring a mixture comprising H 2 O, one or more compounds comprising Si from which SiO 2 in the zeolitic framework structure is formed, said one or more compounds compris-ing a silica gel exhibiting a molar ratio (c H 2 O) : SiO 2 and optionally one or more com-pounds comprising Al from which Al 2 O 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 ℃, preferably in the range of from 190 to 350 ℃, and for a crystallization time in the range of from 0.1 to 48 h.
摘要翻译:制备具有沸石骨架结构的沸石材料的方法,所述沸石骨架结构表现出摩尔比(aAl 2 O 3:SiO 2):SiO 2: 其包含(i)预混合包含H 2 O,一种或多种包含Si的混合物,其中SiO 2在 形成沸石骨架结构,所述一种或多种化合物包含表现出摩尔比(c H 2 O):SiO 2 2和任选地一种或多种 包含形成沸石骨架结构中的Al 2 O 3的Al的化合物; (ii)使(i)中得到的混合物在110-350℃,优选190-350℃的结晶温度下结晶,结晶时间范围为0.1-1.0 48小时。 p>
摘要:
Provided is a process for preparing a zeolitic material comprising YO 2 in its framework structure, wherein Y stands for a tetravalent element. The process comprises the steps of: (1) providing a mixture comprising one or more sources for YO 2 , one or more fluoride containing compounds, and one or more structure directing agents; (2) crystallizing the mixture obtained in step (1) for obtaining the zeolitic material; wherein the mixture provided in step (1) and crystallized in step (2) contains 35 wt.% or less of H 2 O based on 100 wt.% of YO 2 . Also provided are a zeolitic material obtained according to the process, and a zeolitic material per se comprising SiO 2 in its framework structure, wherein the ratio of the total integration value of the peaks associated to Q3 signals to the total integration value of the peaks associated to Q4 signals is in the range of from 0:100 to 20:80 in the 29 Si MAS NMR spectrum of the zeolitic material. Further provided is use of the aforementioned zeolitic materials.
摘要:
The present invention relates to a preparation method for zeolite molecular sieves. The object of the present invention is to provide a method for synthesizing zeolite molecular sieves by means of solid-state reactions without the usage of organic templates. The method comprises following steps: grinding and mixing the solid raw materials comprising the silicon source, the aluminum source and the alkali source, transferring the obtained mixture into an autoclave, conducting the crystallization for a period of 5 hours – 20 days at a temperature of 50-200 ℃. After filtering and drying the crystallized products, molecular sieves in a powder form can be obtained. By using the method of the present invention, different molecular sieves, including ZSM-5 zeolite, Beta zeolite, FAU zeolite, MOR zeolite, LTA zeolite and GIS zeolite, with a high crystallinity and an adjustable Si/Al ratio within a certain range can be obtained. The obtained products exhibit a high crystallinity and a high purity, and the method of the present invention does not require the use of organic templates and solvents, which avoids unnecessary consumptions during the production, simplifies the synthetic process, and also increases the yield from the autoclave reactor.