摘要:
This invention refers to a microporous crystalline material of zeolitic nature that has, in its calcined state and in the absence of defects in its crystalline matrix manifested by the presence of silanols, the empirical formula x (M1/nXO2): y YO2: g GeO2: (1-g) SiO2 in which M is selected between H+, at least one inorganic cation of charge +n, and a mixture of both, X is at least one chemical element of oxidation state +3, Y is at least one chemical element with oxidation state +4 different from Si, x takes a value between 0 and 0.2, both included, y takes a value between 0 and 0.1, both included, g takes a value between 0 and 0.5, both included that has been denoted ITQ-55, as well as a method for its preparation. This invention also relates to uses of the crystalline material of zeolitic nature for adsorption of fluid components, membrane separation of fluid components, storage of fluid components, and catalysis of various conversion reactions.
摘要:
The present disclosure generally provides novel STT-type zeolite materials called PIDC- MM-0501, PIDC-MM-0502, and PIDC-MM-0805/0806 or PIDC-type zeolites and a method of making these zeolites. The present disclosure also provides for the use of these zeolite materials as a catalyst and a method of preparing said catalyst. The PIDC-MM-type zeolites or STT-type zeolite materials may be used as a catalyst, such as in Selective Catalytic Reduction (SCR) applications.
摘要:
ITQ-26 (INSTITUTO DE TECNOLOGIA QUIMICA number 26) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework. ITQ-26 can be prepared in silicate compositions with an organic structure directing agent. It has a unique X-ray diffraction pattern, which identifies it as a new material. ITQ-26 is stable to calcination in air, absorbs hydrocarbons, and is catalytically active for hydrocarbon conversion.
摘要翻译:ITQ-26(INSTITUTO DE TECNOLOGIA QUIMICA 26号)是一种新的结晶微孔材料,其四面体原子框架由能够桥接四面体原子的原子连接,四面体原子框架由其框架中的四面体配位原子之间的互连 。 ITQ-26可以在具有有机结构导向剂的硅酸盐组合物中制备。 它具有独特的X射线衍射图,将其识别为新材料。 ITQ-26在空气中煅烧稳定,吸收碳氢化合物,对烃转化具有催化活性。
摘要:
The invention concerns an MFI type zeolite with a vanadium-substitued silicon part, the synthesis of said zeolite and its use as an oxidation catalyst.
摘要:
This invention refers to a microporous crystalline material of zeolitic nature that has, in its calcined state and in the absence of defects in its crystalline matrix manifested by the presence of silanois, the empirical formula in which M is selected between H + , at least one inorganic cation of charge +n, and a mixture of both, X is at least one chemical element of oxidation state +3, Y is at least one chemical element with oxidation state +4 different from Si, x takes a value between 0 and 0.2, both included, y takes a value between 0 and 0.1, both included, g takes a value between 0 and 0.5, both included that has been denoted ITQ-55, as well as a method for its preparation. This invention also relates to uses of the crystalline material of zeolitic nature for adsorption of fluid components, membrane separation of fluid components, storage of fluid components, and catalysis of various conversion reactions.
摘要:
The invention relates to a method for producing zeolite, zeolite-like or zeotype particles comprising the steps of: 1 ) Adding one or more metal precursors to a silica or alumina source; 2) Reducing the one or more metal precursors to form metal nanoparticles on the surface of the silica or alumina source; 3) Passing a gaseous hydrocarbon, alkyl alcohol or alkyl ether over the silica or alumina supported metal nanoparticle to form a carbon template coated zeolite, zeolite-like or zeotype precursor composition; 4a) Adding a structure directing agent to the carbon template coated zeolite, zeolite-like or zeotype precursor composition thereby creating a zeolite, zeolite-like or zeotype gel composition; 4b) Crystallising the zeolite, zeolite-like or zeotype gel composition by subjecting said composition to a hydrothermal treatment; 5) Removing the carbon template and structure directing agent and isolating the resulting zeolite, zeolite-like or zeotype particles.
摘要:
The present invention relates to a gas-phase process for the preparation of butadiene comprising (i) providing a gas stream G-1 comprising ethanol; (ii) contacting the gas stream G-1 comprising ethanol with a catalyst, thereby obtaining a gas stream G-2 comprising butadiene, wherein the catalyst comprises a zeolitic material having a framework structure comprising YO 2 , Y standing for one or more tetravalent elements, wherein at least a portion of Y comprised in the framework structure is isomorphously substituted by one or more elements X, as well as to a zeolitic material having a framework structure comprising YO 2 , Y standing for one or more tetravalent elements, wherein at least a portion of Y comprised in the framework structure is isomorphously substituted by one or more elements X, wherein the zeolitic material displays a specific X-ray powder diffraction pattern, and to its use.
摘要:
Methods for preparing molecular sieves and molecular sieves obtained thereby are described. The method including preparing a reaction mixture, comprising a structure directing agent, at least one source of at least one oxide of a tetravalent element, optionally, one or more sources of one or more oxides selected from the group consisting of oxides of trivalent elements, pentavalent elements, and mixtures thereof, optionally, at least one source of an element selected from Groups 1 and 2 of the Periodic Table; and optionally, hydroxide ions or fluoride ions, and maintaining the reaction mixture under conditions sufficient to form crystals of the molecular sieve. In the method, various imidazolium cations are used as the structure directing element.
摘要:
L'invention concerne un solide cristallisé, désigné sous l'appellation EV1-20, lequel présente un diagramme de diffraction de rayons X tel que donné ci-dessous. Ledit solide présente une composition chimique exprimée selon la formule empirique mX0 2 : nGeO 2 : pZ 2 O 3 : qR : sF : wH 2 0, où R représente une ou plusieurs espèce(s) organique(s), X représente un ou plusieurs élément(s) tétravalent(s) différent(s) du germanium, Z représente au moins un élément trivalent et F est le fluor.
摘要翻译:本发明涉及由EV1-20表示的结晶固体,其具有如下所示的X射线衍射图。 所述固体具有由经验式mX02:nGeO 2:pZ 2 O 3:qR:sF:wH 2 O表示的化学组成,其中R是一种或多种有机物质,X是与锗不同的一种或多种四价元素,Z至少为 一个三价元素,F是氟。
摘要:
The present invention includes a microporous or mesoporous composition of matter in which the composition is formed continuously or semicontinuously in a heated reactor zone at a temperature between 200°C and 500°C with a residence time less than 24 hours. The reagents are solid and liquid reagents in which the solid reagents have a weight percent between 45% and 98% of the total reagents. The invention also includes a continuous or semi-continuous process for the hydrothermal manufacture of the microporous or mesoporous composition.