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1. 发明申请

US20220072524A1 CATALYST, CATALYST CARRIER OR ABSORBENT MONOLITH OF STACKED STRANDS 有权
公开(公告)号：US20220072524A1
公开(公告)日：2022-03-10
申请号：US17291157
申请日：2019-11-04
申请人： BASF SE , VITO NV
发明人： Christian WALSDORFF , Marco Oskar KENNEMA , Miguel Angel ROMERO VALLE , Florian SCHARF , Dirk HENSEL , Juergen ZUEHLKE , Fred BORNINKHOF , Bart MICHIELSEN , Jasper LEFEVERE
IPC分类号： B01J35/04 , B01J35/00 , B01J37/08 , B01J35/06 , B01J37/00 , B01J8/02 , B01J35/10 , B01J35/02
摘要： A three-dimensional porous catalyst, catalyst carrier or absorbent monolith of stacked strands of catalyst, catalyst carrier or absorbent material, composed of alternating layers of linear spaced-apart parallel strands, wherein the strands in alternating layers are oriented at an angle to one another, wherein the distance between inner spaced-apart parallel strands is larger than the distance between outer spaced-apart parallel strands in at least a part of the layers of the monolith.

2. 发明申请

US20210387958A1 PROCESS FOR PRODUCING ETHYLENE OXIDE BY GAS-PHASE OXIDATION OF ETHYLENE 有权
公开(公告)号：US20210387958A1
公开(公告)日：2021-12-16
申请号：US17285780
申请日：2019-09-19
申请人： BASF SE
发明人： Andrey KARPOV , Marco Oskar KENNEMA , Nicolas DUYCKAERTS , Christian WALSDORFF , Christian BARTOSCH , Juergen ZUEHLKE , Miguel Angel ROMERO VALLE
IPC分类号： C07D301/10 , B01J23/68 , B01J35/00 , B01J35/02 , B01J35/04 , B01J35/10 , B01J21/04
摘要： A process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising: directing a feed comprising gaseous ethylene and gaseous oxygen through a packing of individual shaped catalyst bodies, under conditions conducive to obtain a reaction mixture containing at least 2.7 vol.-% of ethylene oxide, wherein each shaped catalyst body comprises silver deposited on a refractory support and is characterized by a content of at least 20 wt.-% of silver, relative to the total weight of the shaped catalyst body; a BET surface area in the range of 1.6 to 3.0 m2/g; a first face side surface, a second face side surface and a circumferential surface with a plurality of passageways extending from the first face side surface to the second face side surface; and a uniform multilobed cross-section; and a longest direct diffusion pathway d, with 2d being in the range of 0.7 to 2.4 mm, wherein the longest diffusion pathway d is defined as the shortest distance from the geometric surface of the shaped catalyst body to a point inside the structure of the shaped catalyst body for which point the shortest distance is the largest among all points. The process allows for increased activity and/or stability of the catalyst while maintaining or increasing selectivity at high productivity.

3. 发明申请

US20210379569A1 CATALYST FOR PRODUCING ETHYLENE OXIDE BY GAS-PHASE OXIDATION 有权
公开(公告)号：US20210379569A1
公开(公告)日：2021-12-09
申请号：US17285799
申请日：2019-09-19
申请人： BASF SE
发明人： Andrey KARPOV , Marco Oskar KENNEMA , Nicolas DUYCKAERTS , Christian WALSDORFF , Christian BARTOSCH , Juergen ZUEHLKE , Miguel Angel
IPC分类号： B01J23/68 , B01J21/04 , B01J37/02 , B01J35/10 , B01J37/08 , B01J35/04 , B01J35/02 , C07D301/04
摘要： A shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene, comprising silver deposited on a porous refractory support, the shaped catalyst body having a first face side surface, a second face side surface and a circumferential surface, characterized by a content of at least 20 wt.-% of silver, relative to the total weight of the shaped catalyst body; a multilobe structure; a plurality of passageways extending from the first face side surface to the second face side surface, outer passageways being arranged around a central passageway with one outer passageway being assigned to each lobe, wherein neighboring outer passageways are arranged essentially equidistantly to each other and the outer passageways are arranged essentially equidistantly to the central passageway; a minimum wall thickness A between two neighboring passageways in the range of 0.6 to 1.3 mm; a minimum wall thickness B between each outer passageway and the circumferential surface in the range of 1.1 to 1.8 mm; and a BET surface area in the range of 1.6 to 3.0 m2/g. The shaped catalyst bodies allow for a favorable balance between mechanical stability, pressure drop and selectivity. The invention also relates to a process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising reacting ethylene and oxygen in the presence of a shaped catalyst body as defined above. The invention further relates to a process for preparing a shaped catalyst body as above, comprising i) impregnating a refractory support having a BET surface area in the range of 1.4 to 2.5 m2/g with a silver impregnation solution; and ii) subjecting the impregnated refractory support to a calcination process; wherein steps i) and ii) are optionally repeated.

4. 发明申请

US20210283583A1 CATALYST FOR THE OXIDATION OF ETHYLENE TO ETHYLENE OXIDE 有权
公开(公告)号：US20210283583A1
公开(公告)日：2021-09-16
申请号：US16323828
申请日：2017-08-08
申请人： BASF SE
发明人： ANDREY KARPOV , Michael KRAEMER , Marco BOSCH , Christian BARTOSCH , Juergen ZUEHLKE , Carlos LIZANDARA PUEYO , Guido WASSERSCHAFF
IPC分类号： B01J23/68 , B01J6/00 , B01J35/10 , B01J37/02 , B01J23/04 , C07D301/10
摘要： The present invention is directed to a shaped catalyst body for preparing ethylene oxide, which comprises at least silver, cesium and rhenium applied to an alumina support, wherein the alumina support comprises Si, Ca, and Mg in a defined amount. Furthermore, the present invention is directed to a process for preparing the catalyst according to the present invention and process for preparing ethylene oxide by gas-phase oxidation of ethylene by means of oxygen in the presence of a shaped catalyst body according to the present invention.

5. 发明申请

US20210046459A1 CATALYST EFFECTIVE IN THE OXIDATIVE CONVERSION OF ETHYLENE TO ETHYLENE OXIDE 有权
公开(公告)号：US20210046459A1
公开(公告)日：2021-02-18
申请号：US16968542
申请日：2019-02-06
申请人： BASF SE
发明人： Andrey KARPOV , Christian WALSDORFF , Michael KRAEMER , Armin LANGE DE OLIVEIRA , Gerhard KRENNRICH , Christian BARTOSCH , Juergen ZUEHLKE
IPC分类号： B01J23/68 , B01J21/04 , B01J35/10 , B01J37/02 , B01J37/08 , C07D301/10
摘要： The present invention provides a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, comprising an alumina support and 20 to 45%by weight of the catalyst, of silver applied to the support, the catalyst meeting the following limitations (i) to (v): (i) an amount of cesium c(Cs) in mmol per Kg of catalyst of at least 2; (ii) an amount of rhenium c(Re) in mmol per Kg of catalyst of at least 3.0; (iii) an amount of tungsten c(W) in mmol per Kg of catalyst of at least 1.6; (iv) a silicon to alkaline earth metal molar ratio x of not higher than 1.80; (v) c(Cs)−c(Re)−c(W)≤4·x−0.5.

6. 发明申请

US20210039074A1 METHOD FOR PREPARING A SILVER IMPREGNATION SOLUTION 有权
公开(公告)号：US20210039074A1
公开(公告)日：2021-02-11
申请号：US16968548
申请日：2019-02-06
申请人： BASF SE
发明人： Andrey KARPOV , Andreas LEHR , Daniela RIECK , Holger BORCHERT , Tobias WEINLAND , Marco BOSCH , Christian WALSDORFF , Christian BARTOSCH , Juergen ZUEHLKE
IPC分类号： B01J23/50 , B01J35/10 , B01J35/02 , B01J37/02 , B01J37/08 , C07D301/02
摘要： A method for preparing a silver impregnation solution comprises (a) charging a neutralization reactor R1 with an aqueous organic amine; (b) adding oxalic acid powder through a first feeding conduit to the neutralization reactor R1 to obtain an aqueous oxalic acid-organic amine solution; (c) directing the aqueous oxalic acid-organic amine solution from the neutralization reactor to a complexation reactor R2; (d) adding particulate silver oxide through a second feeding conduit to the complexation reactor R2 to obtain a silver impregnation solution; and, optionally, (e) subjecting the silver impregnation solution to filtration. The silver impregnation solution is used for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide. The method allows for the preparation of a silver impregnation solution in an efficient and occupationally and environmentally safe way. Security hazards which can occur when oxalic acid and silver oxide are added to an aqueous amine solution using the same powder feeding equipment or the same reactor are avoided.

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