摘要:
Aspects of the present invention relate 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. Other aspects of the invention relate to methods for the preparation of said shaped bodies and their uses.
摘要:
The present invention relates to a process for the preparation of zeolites having CHA framework structure and a composition comprising the molar ratio (n SiO2):X2O3, wherein X is a trivalent element, and wherein n is at least 10, the process comprising (i) preparation of an aqueous solution containing at least one source for X2O3, wherein X is selected from Al, B, Ga, and a mixture of two or more, and at least one source for SiO2, at least one organic structure directing agent (SDA) other than Tetrame-thylammonium hydroxide (TMAOH), acting as a template for the CHA structure, and Tetramethylammonium hydroxide (TMAOH), wherein the SDA or mixtures thereof are employed in such amounts that the aqueous solution in (i) exhibits a molar ratio of SDA:TMAOH of 0.01 to 5; (ii) hydrothermal crystallization of the aqueous solution according to (i); wherein the aqueous solution of (i) contains copper in an amount less than 0.005 Cu:((n YO2)+X2O3) where n is in the range of 10 to 50. The present invention also relates to the zeolitic materials obtainable and/or obtained by this process as well as to a zeolitic material as such, having framework structure CHA, having a composition comprising the molar ratio (n SiO2):X2O3, wherein X is a trivalent element and n is at least 10, and wherein the crystal size, as determined from Scanning Electron Microscopy, is greater than 1 micrometer and wherein the chabazite framework is phase-pure having an impurity of other zeolitic frameworks, such as RUT as determined by X-ray Diffraction, of less than 5%.
摘要翻译:本发明涉及一种制备具有CHA骨架结构的沸石和包含摩尔比(n SiO 2):X 2 O 3的组合物的方法,其中X是三价元素,并且其中n至少为10,该方法包括(i )制备含有至少一种X 2 O 3的源的水溶液,其中X选自Al,B,Ga,以及两种或更多种的混合物和至少一种SiO 2源,至少一种有机结构导向剂(SDA )作为CHA结构的模板的四甲基氢氧化铵(TMAOH)和氢氧化四甲基铵(TMAOH),其中SDA或其混合物的使用量使得(i)中的水溶液表现出摩尔比 的SDA:TMAOH为0.01〜5; (ii)根据(i)的水溶液的水热结晶; 其中(i)的水溶液含有小于0.005 Cu:((n YO 2)+ X 2 O 3)的铜,其中n在10至50的范围内。本发明还涉及可获得的和/或 通过该方法获得的沸石材料以及具有骨架结构CHA的沸石材料,其具有包含摩尔比(n SiO 2):X 2 O 3的组成,其中X是三价元素,n至少为10,并且其中晶体 通过扫描电子显微镜测定的尺寸大于1微米,其中菱沸石框架是相纯的,具有小于5%的其它沸石骨架的杂质,例如通过X射线衍射测定的RUT。
摘要:
A method comprising (i) providing a metal organic framework formed by AlIII ions to which fumarate ions are coordinated to produce a porous framework structure, (ii) bringing a substance into contact with the metal organic framework such that the substance is uptaken by the porous metal organic framework to provide storage of or controlled release of, the substance.
摘要:
A continuous process for the production of propylene oxide comprising reacting propene with hydrogen peroxide in methanolic solution in the presence of a titanium silicalite-1 catalyst to obtain propylene oxide, wherein a reaction feed comprising propene, methanol and hydrogen peroxide is introduced into a reactor, said reaction feed containing potassium cations and phosphorus in the form of anions of at least one phosphorus oxyacid.
摘要:
The present invention relates to a method for producing a porous metal-organic framework material comprising the stepreacting a reaction mixture in the liquid phase of at least one copper compound having at least one at least bidentate, organic compound which can bind by coordination to the copper in the presence of a nonaqueous solvent, the at least one at least bidentate, organic compound being derived from a polycarboxylic acid having at least three carboxyl groups, and the reaction proceeding at atmospheric pressure above 80° C.
摘要:
Described is a copper containing ZSM-34, OFF and/or ERI zeolitic material having 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 10 wt.-%, based on the total weight of the calcined zeolitic material, and having an alkali metal content, reported as the metal oxide, ranging from about 0.7 to about 1.5 wt.-%, wherein the 750° C.-aged copper containing ZSM-34, OFF and/or ERI zeolitic material exhibits NO conversion at 200° C. of at least about 75% and at 450° C. of at least about 90%, measured at a gas hourly volume based space velocity of 30000 h−1 under steady state conditions at maximum NH3-slip conditions in a gas mixture of 500 ppm NO, 500 ppm NH3, 10% O2, 5% H2O, balance N2.
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 present invention relates to a process for the preparation of a silicate compound, comprising (1) providing at least one layered silicate; and (2) mixing said layered silicate with water and at least one silicon containing compound according to formula R4-mSi[—(SiR2)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, or 4; and n is an integer greater than or equal to 0.
摘要:
The invention relates to a closing system for motor vehicles involving access authorization and driving authorization by means of a control unit provided with means of communication. Said communication means comprise a stationary transmitter-receiver unit in the vehicle and a mobile transmitter-receiver unit in a wireless hand telephone (10). The control unit monitors the data transferred during said communication for access or driving authorization and activates or deactivates the corresponding systems if authorization is valid. The hand telephone (10) contains an SIM card (15) for telephonic network operation. In order to use the closing system in a quick and comfortable manner, the SIM card (15) is also a carrier for the access and driving authorization data. (16). A bi-directional local communication hands-free system operating in the GHz range is also used in the motor vehicle. Said telephonic local communication is also used for transmitting access and/or driving authorization data (16).
摘要:
Zeolite material of the pentasil type has an alkali metal and alkaline earth metal content of not more than 100 ppm and a molar ratio of Si to Al of from 250 to 1500, at least 90% of the primary particles of the zeolite material being spherical and 95% by weight of the spherical primary particles having a diameter of less than or equal to 1 μm.