Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
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).
Abstract:
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.
Abstract:
The present invention relates to a process for the preparation of zeolites having B-CHA framework structure and a composition comprising the molar ratio (n SiO2):B2O3, wherein n is at least 10, the process comprising (i) preparation of an aqueous solution containing at least one source for B2O3, at least one source for SiO2, at least one source of seeding crystals of chabazite structure, at least one organic structure directing agent (SDA) other than Tetramethylammonium hydroxide (TMAOH), acting as a template for the B-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 ratio of the [molar ratio (SiO2:B2O3)] of the gel composition:[molar ratio (SiO2:B2O3)] of the crystalline product having the chabazite structure is greater than 0.5. 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 B-CHA, having a composition comprising the molar ratio (n SiO2):B2O3, wherein n is at least 10, and wherein the ratio of the [molar ratio (SiO2:B2O3)] of the gel composition:[molar ratio (SiO2:B2O3)] of the crystalline product having the chabazite structure is greater than 0.5.
Abstract translation:本发明涉及一种制备具有B-CHA骨架结构的沸石和包含摩尔比(n SiO 2):B 2 O 3,其中n至少为10的组合物的方法,该方法包括(i)制备水溶液 含有至少一种B 2 O 3源,至少一种SiO 2源,至少一种菱沸石结晶晶体源,至少一种除氢氧化四甲基铵(TMAOH)以外的有机结构导向剂(SDA),作为 B-CHA结构和四甲基氢氧化铵(TMAOH),其中SDA或其混合物的用量使得(i)中的水溶液的SDA:TMAOH的摩尔比为0.01至5; (ii)根据(i)的水溶液的水热结晶; 其中具有菱沸石结构的结晶产物的凝胶组成:[摩尔比(SiO 2 :B 2 O 3)]的[摩尔比(SiO 2 :B 2 O 3)]的比率大于0.5。 本发明还涉及通过该方法获得和/或获得的沸石材料以及具有骨架结构B-CHA的沸石材料,其具有包含摩尔比(n SiO 2):B 2 O 3的组成,其中n 为至少10,并且其中具有菱沸石结构的结晶产物的凝胶组成:[摩尔比(SiO 2 :B 2 O 3)]的[摩尔比(SiO 2 :B 2 O 3)]的比率大于0.5。
Abstract:
A method for storing, separating or controlled releasing of at least one substance, by up taking the at least one substance by a porous metal organic framework material formed by Mg2+ ions to which 5-tert-buthylisophthalate ions are coordinated to form a framework structure.