公开(公告)号：US20180207617A1

公开(公告)日：2018-07-26

申请号：US15742576

申请日：2016-07-19

申请人： Evonik Degussa GmbH

发明人： Achim FISCHER ,  Axel MESCHER ,  Harald JAKOB

IPC分类号： B01J23/00 ,  B01J37/00 ,  B01J37/08 ,  B01J37/06 ,  C07C45/35

CPC分类号： B01J23/002 ,  B01J23/8876 ,  B01J23/8898 ,  B01J23/8933 ,  B01J27/192 ,  B01J35/023 ,  B01J35/08 ,  B01J37/0018 ,  B01J37/0045 ,  B01J37/06 ,  B01J37/086 ,  B01J37/088 ,  B01J2523/00 ,  B01J2523/18 ,  B01J2523/19 ,  B01J2523/31 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/47 ,  B01J2523/48 ,  B01J2523/51 ,  B01J2523/54 ,  B01J2523/55 ,  B01J2523/56 ,  B01J2523/63 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/72 ,  B01J2523/824 ,  B01J2523/828 ,  B01J2523/84 ,  C07C45/35 ,  C07C51/252 ,  B01J2523/13 ,  B01J2523/3737 ,  B01J2523/41 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847 ,  C07C47/22 ,  C07C57/04

摘要： The present invention relates to a process for producing mixed oxide catalysts on the basis of molybdenum and bismuth oxides in which the precursor compounds of the components of mixed oxide catalysts provided in the form of a solution and/or suspension are subjected to a spray-drying with a specific temperature regime and the spray particles obtained in this way are then calcined to yield a catalytic active mass, and to the mixed oxide catalysts obtainable by this process and to the use of these catalysts in the partial oxidation of olefms, in particular in the partial gas phase oxidation of propene to acrolein and acrylic acid. The spray drying of the precursor compounds containing solution or suspension is performed in concurrent with a gas stream having a specific entrance temperature. Alternatively, when the main gas stream has a higher entrance temperature, an additional colder gas stream can be fed in downstream. The thus obtained mixed oxide catalysts give lower a maximum temperature in the hot spot of catalyst fixed bed when they are used in the partial gas phase oxidation of olefms.

公开(公告)号：US20170342008A1

公开(公告)日：2017-11-30

申请号：US15605915

申请日：2017-05-25

申请人： ZHEJIANG UNIVERSITY OF TECHNOLOGY

发明人： Yong NIE ,  Qinglong XIE ,  Ruchao GONG ,  Ying DUAN ,  Shanshan LI ,  Yang LIU ,  Xiaojiang LIANG ,  Zhenyu WU ,  Meizhen LU ,  Fengwen YU ,  Jianbing JI

IPC分类号： C07C45/00 ,  B01J23/30 ,  B01J27/188 ,  B01J35/00

CPC分类号： B01J27/188 ,  B01J23/30 ,  B01J27/224 ,  B01J38/00 ,  C07C45/52 ,  C07C47/22

摘要： A novel method for catalytic dehydration of glycerol to acrolein is provided. A fixed bed reactor is used, which is placed in a microwave unit. The feedstock is introduced into the fixed bed reactor after being preheated and gasified. Continuous glycerol dehydration occurs in the presence of a microwave-absorbing catalyst in the fixed bed reactor to form acrolein. The microwave-absorbing catalyst is composed of an active component loaded on a core-shell structure which consists of microwave absorbent coated by an oxide. The uniformity of microwave heating can reduce the formation of hot spot during the reaction and hence improve the catalyst stability. The process and operation is simple, and the unit can steadily run for a long time.

公开(公告)号：US09822051B2

公开(公告)日：2017-11-21

申请号：US14894752

申请日：2014-05-23

申请人： Martin Steffan ,  Helmut Mueller ,  Philipp Roth ,  Christoph Weckbecker ,  Harald Jakob

发明人： Martin Steffan ,  Helmut Mueller ,  Philipp Roth ,  Christoph Weckbecker ,  Harald Jakob

IPC分类号： C07C45/35 ,  C07C51/00 ,  C07C51/235 ,  B01J23/888 ,  B01J23/889 ,  B01J23/89 ,  C07C51/25

CPC分类号： C07C45/35 ,  B01J23/8885 ,  B01J23/8898 ,  B01J23/8993 ,  C07C51/235 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

摘要： The present invention relates to a process for preparing acrolein from propylene by catalytic gas phase oxidation with molecular oxygen (for example air). The invention further relates to the use of particular propylene-containing starting materials, for example refinery grade propylene, for preparation of acrolein.

公开(公告)号：US09765007B2

公开(公告)日：2017-09-19

申请号：US14917114

申请日：2014-09-18

申请人： Rohm and Haas Company

发明人： Stacy W. Hoy, IV ,  Dmitri A. Kraptchetov ,  Mark A. Silvano

IPC分类号： C07C67/00 ,  C07C45/83 ,  C07C45/65 ,  C07C45/80 ,  C07C45/82 ,  C07C45/50 ,  C07C45/61 ,  C07C67/44

CPC分类号： C07C45/83 ,  C07C45/505 ,  C07C45/61 ,  C07C45/65 ,  C07C45/80 ,  C07C45/82 ,  C07C67/44 ,  C07C47/22

摘要： A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.

公开(公告)号：US09732023B2

公开(公告)日：2017-08-15

申请号：US14773602

申请日：2014-03-13

申请人： Torsten Balduf ,  Steffen Krill ,  Rudolf Burghardt

发明人： Torsten Balduf ,  Steffen Krill ,  Rudolf Burghardt

IPC分类号： C07C69/52 ,  C07C51/25 ,  C07C45/75 ,  C07C51/44 ,  C07C51/48 ,  B01J19/24

CPC分类号： C07C51/252 ,  B01J19/245 ,  B01J2219/24 ,  C07C45/75 ,  C07C51/44 ,  C07C51/48 ,  Y02P20/582 ,  C07C57/04 ,  C07C47/22

摘要： The invention relates to a process for preparation of at least one of methacrylic acid and a methacrylic acid ester, comprising the process stepsgas phase oxidation of at least one C4 compound, quenching of the reaction phase, separation and purification of the obtained methacrylic acid and optionally esterification, wherein the C4 compound is a methacrolein comprising mixture, originating from at least two different methacrolein sources, a first methacrolein source being a feed stream obtained by the heterogeneously catalyzed gas phase oxidation of isobutylene or tert-butyl alcohol or isobutylaldehyde or a mixture of two or more thereof, a second methacrolein source being a feed stream obtained by the reaction of propionaldehyde with a C1 extending agent, preferably formaldehyde, and where said methacrolein can be obtained either completely from the first methacrolein source, or completely from the second methacrolein source or from any mixture of both.

公开(公告)号：US20170217868A1

公开(公告)日：2017-08-03

申请号：US15008833

申请日：2016-01-28

申请人： EASTMAN CHEMICAL COMPANY

发明人： VENKATA BHARAT BOPPANA ,  DAVID WILLIAM NORMAN ,  GERALD C. TUSTIN ,  MELISSA PAGE STEFFEY

IPC分类号： C07C45/75 ,  C07C45/45

CPC分类号： C07C45/75 ,  C07C45/38 ,  C07C45/45 ,  C07C47/04 ,  C07C47/22

摘要： A process is described that uses a silver catalyst to convert methanol into formaldehyde in the presence of less than a stoichiometric amount of oxygen. The resulting formaldehyde is reacted without isolation with propionaldehyde over a commercially available anatase titania catalyst that is shown to be catalytically active towards the formation of methacrolein from formaldehyde and propionaldehyde with conversions and selectivities close to 90%. This titania catalyst is readily available, non-toxic, and can be used with formaldehyde and a variety of other aldehyde compounds to make α,β-unsaturated aldehyde compounds. This process benefits from low raw material costs and is economically advantaged due to the elimination of catalyst separation. This process shows promising stability and selectivity during lifetime studies, particularly when performed in the presence of a hydrogen carrier gas.

公开(公告)号：US20170158621A1

公开(公告)日：2017-06-08

申请号：US15366758

申请日：2016-12-01

申请人： BAKER HUGHES INCORPORATED

发明人： HUA MO ,  ROGER D. METZLER ,  HSIN HUANG

IPC分类号： C07C253/32

CPC分类号： C07C253/32 ,  C07C45/86 ,  C07C51/50 ,  C07C67/62 ,  C07C255/08 ,  C07C57/04 ,  C07C69/15 ,  C07C69/54 ,  C07C47/22

摘要： In one embodiment, the present invention provides a method, comprising: a. adding an effective amount of at least one compound selected from the group consisting of a substituted catechol, nitroxide free radicals, a compound of Formula 2, 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl, phenol, hydroxylamine, and phenylene diamine to a solution of a monomer selected from the group consisting of acrylonitrile, acrylic acid, vinylacetate, acrylates and acrolein; b. placing the monomer solution containing the at least one compound in a pressure vessel, pressurizing the pressure vessel and removing oxygen from the pressure vessel; and c. heating the monomer solution containing the at least one compound, wherein the at least one compound inhibits fouling by preventing polymerization of the monomer.

公开(公告)号：US09580376B2

公开(公告)日：2017-02-28

申请号：US14903410

申请日：2014-07-17

申请人： Nippon Kayaku Kabushiki Kaisha

发明人： Tomoyuki Kawamura ,  Tatsuhiko Kurakami ,  Yuuta Nakazawa ,  Toru Kawaguchi ,  Motohiko Sugiyama

IPC分类号： C07C45/27 ,  C07C51/00 ,  C07C51/16 ,  C07C45/35 ,  C07C51/25 ,  B01J35/00 ,  B01J23/00 ,  B01J37/00 ,  B01J23/887 ,  B01J37/03

CPC分类号： C07C51/16 ,  B01J23/002 ,  B01J23/8876 ,  B01J35/0006 ,  B01J37/0018 ,  B01J37/0045 ,  B01J37/031 ,  B01J2523/00 ,  C07C45/27 ,  C07C45/35 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/13 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847 ,  B01J2523/15

摘要： Provided is a method of subjecting an alkene to partial oxidation by using a fixed bed multitubular reactor, thereby producing an unsaturated aldehyde and/or an unsaturated carboxylic acid each corresponding to the alkene, wherein a plurality of catalyst layers formed by N division (N is N≧2) with respect to a gas flow direction of a reaction tube are provided, and when a change (° C.) of hot spot temperature per 1° C. change of reaction bath temperature in the catalyst layer is designated as Sn, at least one of the plurality of catalyst layers is regulated to Sn≦6.

摘要翻译： 提供一种使用固定床多管反应器使烯烃进行部分氧化的方法，从而生成各自对应于烯烃的不饱和醛和/或不饱和羧酸，其中通过N分区形成多个催化剂层（N为 N≥2）相对于反应管的气体流动方向，并且当催化剂层中每1℃的热点温度变化（反应浴温度的变化）指定为Sn时， 将多个催化剂层中的至少一个调节为Sn≤6。

公开(公告)号：US20160229779A1

公开(公告)日：2016-08-11

申请号：US14917114

申请日：2014-09-18

申请人： ROHM AND HAAS COMPANY

发明人： Stacy W. Hoy, IV ,  Dmitri A. Kraptchetov ,  Mark A. Silvano

IPC分类号： C07C45/83 ,  C07C45/50 ,  C07C45/61 ,  C07C45/80 ,  C07C67/44

CPC分类号： C07C45/83 ,  C07C45/505 ,  C07C45/61 ,  C07C45/65 ,  C07C45/80 ,  C07C45/82 ,  C07C67/44 ,  C07C47/22

摘要： A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.

摘要翻译： 公开了一种制备干甲基丙烯醛的方法和一种生产甲基丙烯酸甲酯的方法。

公开(公告)号：US20160228851A1

公开(公告)日：2016-08-11

申请号：US15016850

申请日：2016-02-05

申请人： Wisconsin Alumni Research Foundation

发明人： Ive Hermans ,  Joseph Thomas Grant ,  Carlos Carrero Marquez

IPC分类号： B01J23/22 ,  C07C5/48 ,  B01J37/02 ,  B01J23/28 ,  B01J23/30 ,  C07C45/52 ,  B01J23/20

CPC分类号： B01J23/22 ,  B01J21/08 ,  B01J23/20 ,  B01J23/28 ,  B01J23/30 ,  B01J29/0341 ,  B01J35/002 ,  B01J35/0066 ,  B01J35/10 ,  B01J35/1019 ,  B01J37/0203 ,  B01J37/0207 ,  B01J37/0215 ,  B01J37/082 ,  B01J2523/00 ,  C07C5/48 ,  C07C6/04 ,  C07C45/52 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2523/20 ,  C07C2523/22 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/30 ,  C07C2523/36 ,  Y02P20/52 ,  C07C11/06 ,  C07C11/02 ,  C07C47/22 ,  B01J2523/12 ,  B01J2523/41 ,  B01J2523/55 ,  B01J2523/57 ,  B01J2523/56

摘要： Improved catalysts including two-dimensional metal oxide species highly dispersed on a silica support are disclosed, as well methods of making and using such catalysts. The catalysts are substantially free of metal oxide nanoparticles. The higher than expected maximum dispersion densities are obtained in the catalysts by introducing dispersion-promoting sodium ions, and optionally, aluminum ions, onto the silica support. The improved catalysts may be used in a variety of chemical processes, including, without limitation, in dehydrogenation, oxidation, and metathesis reactions.

摘要翻译： 公开了包括高分散在二氧化硅载体上的二维金属氧化物种类的改进的催化剂，以及制备和使用这些催化剂的方法。 催化剂基本上不含金属氧化物纳米颗粒。 通过将分散促进钠离子和任选的铝离子引入到二氧化硅载体上，在催化剂中获得高于预期的最大分散密度。 改进的催化剂可以用于各种化学方法，包括但不限于脱氢，氧化和复分解反应。