摘要:
A copper containing ZSM-34, OFF and /or ERI zeolitic material is provided, which has a silica to alumina mole ratio ranging from about 4 to about 50 and a copper content, reported as CuO, ranging from about 1 to about 10wt.%, based on the total weight of the calcined zeolitic material, and an alkali metal content, reported as the metal oxide, of less than about 0.7wt.%.
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 Z2O5, one or more sources for X2O3, 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 Y02, X2O3, and optionally Z2O5, 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 YO2 are further provided in step (1 ).
摘要:
Disclosed are processes for the preparation of copper containing molecular sieves with the CHA structure having a silica to alumina mole ratio greater than about 10, wherein the copper exchange step is conducted via wet state exchanged and prior to the coating step and wherein in the copper exchange step a liquid copper solution is used wherein the concentration of copper is in the range of about 0.001 to about 0.25 molar using copper acetate and/or an ammoniacal solution of copper ions as copper source. Catalysts made by the processes, catalyst systems and methods of treating exhaust gas with the molecular sieves and catalysts are also disclosed.
摘要:
Disclosed are processes for the preparation of copper containing molecular sieves with the CHA structure wherein the copper is exchanged into the Na+-form of the Chabazite, using a liquid copper solution wherein the concentration of copper is in the range of about 0.001 to about 0.4 molar. Also described are copper containing molecular sieves with the CHA structure, catalysts incorporating molecular sieves, systems and methods for their use.
摘要:
The present invention relates to a porous organometallic framework material containing a bidentate organic compound in a dative bond with a metal ion, the metal ion being selected from the group of metals consisting of Al, Fe, and Cr and the bidentate organic compound being derived from a dicarboxylic acid, characterized in that the framework material has a structure the projection of which has along [001] a pattern in which each side of a hexagon is limited by a triangle. The present invention further relates to molds and a method for the production of the porous organometallic framework material and the use thereof.
摘要:
The invention relates to a biodegradable material in the form of a foil or film, said material containing a polymer. The polymer contains at least one porous organometallic framework which contains at least one at least bidentate organic compound that is coordinatively bound to a metal ion. The invention also relates to packaging for foodstuffs containing a material of this type, to the use of said material for packaging foodstuffs and to the use of a porous organometal framework for absorbing ethene in foodstuff packaging.
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:
The invention relates to a method for the integrated production of aromatics and ammonia by reacting a gaseous stream A containing at least one C 1 to C 6 aliphatic compound and nitrogen in the presence of at least one catalyst. In one reaction, the C 1 to C 6 aliphatic compound is non-oxidatively converted into aromatics and the hydrogen released in said process is converted in a further reaction into ammonia.
摘要翻译:一种用于芳族化合物的积分制备和氨通过至少一个C 的反应过程1 SUB> - Visual C 6 SUB>的脂族化合物和氮的气体流A中的至少一种催化剂的存在下,在反应 的C 1 SUB> - Visual C 6 SUB>的脂族化合物是nonoxidatively反应芳族化合物,并用氮气将由此释放的氢在进一步的反应以形成氨。
摘要:
The present invention relates to a continuous process for the preparation of an olefin oxide wherein an olefin is reacted with a hydroperoxidein the presence of a catalyst, and wherein the reaction which is carried out in at least three reactors operated in par- allel is controlled by specifically adjusting the catalyst loads in the reactors.
摘要:
The invention relates to a method for producing a layered silicate containing at least Ga and/or Zn and a tectosilicate based thereon, preferably with an RRO structure, to the layered silicate and tectosilicate and to the use of silicates, in particular tectosilicate, preferably as catalysts.