公开(公告)号：US06538168B1

公开(公告)日：2003-03-25

申请号：US09610942

申请日：2000-07-06

申请人： Peter Schwab ,  Michael Schulz ,  Ralf Schulz ,  Sylvia Huber

发明人： Peter Schwab ,  Michael Schulz ,  Ralf Schulz ,  Sylvia Huber

IPC分类号： C07C602

CPC分类号： C07C7/14891 ,  C07C7/005 ,  C07C7/10 ,  C07C7/163 ,  C07C11/06 ,  C07C11/10 ,  C07C11/107 ,  C07C2521/04 ,  C07C2521/08 ,  C07C2523/36 ,  Y02P20/52

摘要： A process for preparing C5/C6-olefins from an olefinic starting stream comprising C4-hydrocarbons comprises a) carrying out a metathesis reaction in the presence of a metathesis catalyst so as to convert the 1-butene, 2-butene and isobutene present in the starting stream into a mixture of C2-C6-olefins and butanes, b) firstly fractioning the resulting product stream by distillation to give a low boiler fraction A comprising C2-C4-olefins and butanes or C2-C3-olefins, which is discharged, and a high boiler fraction comprising C4-C8-olefins and butanes, c) fractioning the high boiler fraction from b) by distillation to give a low boiler fraction B comprising butenes and butanes, an intermediate boiler fraction C comprising pentene and methylbutene and a high boiler fraction D comprising hexane and methylpentene, d) where all or part of the fraction B and/or C are recirculated to the process step a) and the fraction D is discharged as product.

摘要翻译： 从包含C 4烃的烯烃原料流制备C5 / C6-烯烃的方法包括：a）在复分解催化剂存在下进行复分解反应，以便转化起始中存在的1-丁烯，2-丁烯和异丁烯 流入C2-C6-烯烃和丁烷的混合物中，b）首先通过蒸馏对所得产物流进行分馏，得到包含C2-C4-烯烃和排出的丁烷或C2-C3-烯烃的低沸点馏分A，以及 包含C4-C8-烯烃和丁烷的高沸点馏分，c）通过蒸馏从b）中分馏高沸点馏分，得到包含丁烯和丁烷的低沸点馏分B，包含戊烯和甲基丁烯的中间锅炉馏分C和高锅炉 馏分D包括己烷和甲基戊烯，d）其中全部或部分馏分B和/或C再循环到方法步骤a），馏分D作为产物排出。

公开(公告)号：US06518469B2

公开(公告)日：2003-02-11

申请号：US10059744

申请日：2002-01-29

申请人： Armen Nazar Abazajian

发明人： Armen Nazar Abazajian

IPC分类号： C07C602

CPC分类号： C07C11/02 ,  C07C5/226 ,  C07C6/04 ,  C07C2523/04 ,  C07C2523/28 ,  C07C2523/30 ,  C07C2523/36 ,  Y02P20/127 ,  Y10S203/06

摘要： A process for improved yields of heavier olefins from a substantially narrow range of lighter hydrocarbon feed stock containing olefins in a reaction distillation column comprising feeding a narrow range of hydrocarbon feed stock containing olefin into a reaction distillation column at a point between its bottom and top, contacting the olefins at the point of feed with a disproportionation catalyst in alternating arrangement with an isomerization catalyst or a mixture thereof and keeping the reaction mixture in a state of vapor-liquid equilibrium for concentrating the lighter reaction products in the vapor phase and the heavier reaction products in the liquid phase by maintaining a controlled pressure and temperature profile in the reactive distillation column and for reactively creating the desired heavier molecular weight olefins over the catalysts and collecting it as bottoms product and removing the lighter molecular weight olefins overhead from the top of the reactive distillation column.

公开(公告)号：US06346652B1

公开(公告)日：2002-02-12

申请号：US09114692

申请日：1998-07-13

申请人： Richard R. Schrock ,  Amir H. Hoveyda

发明人： Richard R. Schrock ,  Amir H. Hoveyda

IPC分类号： C07C602

CPC分类号： C07B53/00 ,  C07B57/00 ,  C07F7/1892 ,  C07F11/005 ,  Y02P20/582 ,  Y10S585/94

摘要： A composition and method for the catalytic conversion of a racemic mixture of dienes to a cyclic olefin by a ring-closing metathesis (RCM) reaction are disclosed. The composition, a transition metal complex with an M═C reaction site, contains a bidentate dialkoxide of at least 80% optical purity. Because the M═C reaction site is of a sufficient shape specificity, conferred in part by the dialkoxide of sufficient rigidity and a M═N—R1 site, reacting the composition with a mixture of two enantiomeric dienes results in an olefin metathesis product that has at least a 50% enantiomeric excess of one enantiomer in the mixture. A method is also provided for reacting a composition with a racemic diene mixture to generate a metathesis product that has an enantiomeric excess of at least 50%. Methods are also provided for catalytic enantioselective desymmetrization. One method involves an olefin metathesis reaction with a molecular substrate having a plane of symmetry to form a product free of a plane of symmetry. Another method provides a desymmetrization reaction to occur in the absence of solvent. A method for producing quaternary carbon centers through a desymmetrization reaction is also described.

摘要翻译： 公开了通过闭环复分解（RCM）反应将二烯的外消旋混合物催化转化成环状烯烃的组合物和方法。 该组合物是具有M = C反应位点的过渡金属络合物，其含有至少80％光学纯度的二齿二烷氧基化物。 由于M = C反应位点具有足够的形状特异性，部分由二烷氧基赋予足够的刚性和M = N-R1位点，使组合物与两种对映异构体二烯的混合物反应，得到烯烃复分解产物，其具有 在混合物中至少50％对映异构体过量的一种对映异构体。 还提供了使组合物与外消旋二烯混合物反应以产生具有至少50％的对映异构体过量的复分解产物的方法。 还提供了催化对映选择性去对称化的方法。 一种方法涉及与具有对称平面的分子底物的烯烃复分解反应以形成不具有对称平面的产物。 另一种方法提供在不存在溶剂的情况下发生的不对称反应。 还描述了通过不对称反应生产季碳中心的方法。

公开(公告)号：US06284939B1

公开(公告)日：2001-09-04

申请号：US09363817

申请日：1999-07-30

申请人： Frédéric Hoffmann ,  Philippe Mege ,  Dominique Commereuc

发明人： Frédéric Hoffmann ,  Philippe Mege ,  Dominique Commereuc

IPC分类号： C07C602

CPC分类号： C07C6/04 ,  B01J8/082 ,  B01J8/12 ,  B01J8/1863 ,  B01J8/20 ,  B01J38/04 ,  B01J2219/00006 ,  B01J2219/00033 ,  Y02P20/584 ,  Y10S585/921

摘要： This invention pertains to a continuous catalytic process, for example, for the metathesis of olefins that uses a catalyst circulating in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer the deactivated catalyst emerging from the reaction zone to the regenerator, whereby said process is characterized by the fact that the transfer is accomplished by a gas that does not react with the catalyst and with the stripping off of at least a portion of the organic matter that is adsorbed on the deactivated catalyst.

摘要翻译： 本发明涉及连续催化方法，例如用于使用在液相中和在再生器中运行的至少一个反应区中的移动床中循环的催化剂的烯烃的复分解，其中升动转移失活的催化剂 从反应区向再生器出现，其中所述方法的特征在于转移是通过不与催化剂反应的气体完成的，并且被吸附在至少一部分有机物上 失活的催化剂。

公开(公告)号：US06433240B1

公开(公告)日：2002-08-13

申请号：US09241298

申请日：1999-02-01

申请人： Peter Schwab ,  Boris Breitscheidel ,  Carsten Oost ,  Ralf Schulz ,  Michael Schulz

发明人： Peter Schwab ,  Boris Breitscheidel ,  Carsten Oost ,  Ralf Schulz ,  Michael Schulz

IPC分类号： C07C602

CPC分类号： B01D3/141 ,  C07C11/06 ,  C07C11/08 ,  C07C2521/04 ,  C07C2523/36 ,  C07C2523/46 ,  Y02P20/52 ,  Y02P20/584

摘要： Propene and, if desired, 1-butene are prepared by first reacting 1-butene and 2-butene to give propene and 2-pentene in the presence of a metathesis catalyst containing at least one compound of a metal of transition group VIb, VIIb or VIII of the Periodic Table of the Elements. The propene and 2-pentene formed are subsequently separated, and the 2-pentene is then reacted to give propene and 1-butene in the presence of a metathesis catalyst containing at least one compound of a metal of transition group VIb, VIIb or VIII. The propene and 1-butene formed are subsequently separated, and at least some of the 1-butene is discharged or at least partly isomerized to give 2-butene in the presence of an isomerization catalyst. Undischarged 1-butene and the 2-butene formed are subsequently returned to the initial reaction step, together with that part of the C4 fraction which was not reacted in the initial reaction step.

摘要翻译： 如果需要，丙烯和1-丁烯如下制备，首先使1-丁烯和2-丁烯反应得到丙烯和2-戊烯，在复分解催化剂存在下，该复分解催化剂含有至少一种过渡组VIb，VIIb或 元素周期表八。 随后分离形成的丙烯和2-戊烯，然后在含有至少一种过渡族VIb，VIIb或VIII的金属化合物的复分解催化剂的存在下，使2-戊烯反应得到丙烯和1-丁烯。 随后分离形成的丙烯和1-丁烯，并且在异构化催化剂存在下，将至少一些1-丁烯排出或至少部分异构化，得到2-丁烯。 随后将未放电的1-丁烯和形成的2-丁烯与在初始反应步骤中未反应的部分C4馏分一起返回至初始反应步骤。

公开(公告)号：US06271430B1

公开(公告)日：2001-08-07

申请号：US09283201

申请日：1999-04-01

申请人： Peter Schwab ,  Arthur Höhn

发明人： Peter Schwab ,  Arthur Höhn

IPC分类号： C07C602

摘要： The present invention relates to a process for preparing propene by metathesis of olefins. The process comprises preparing propene by a) in a first reactor (R1), reacting 1-butene and 2-butene to give propene and 2-pentene in the presence of a metathesis catalyst comprising at least one compound of a metal of transition group VIb, VIIb, or VIII of the Periodic Table of elements, b) subsequently separating the propene, unreacted raffinate II, and 2-pentene formed in a) in a distillation column (D1), c) subsequently reacting the 2-pentene of b) with ethene to give propene and 1-butene in a reactor (R2) in the presence of a metathesis catalyst comprising at least one compound of a metal of transition group VIb, VIIb, or VIII of the Periodic Table of Elements, d) subsequently separating the propene and 1-butene formed in c), e) subsequently returning the 1-butene formed in d) to step a) and f) wherein unreacted raffinate II is taken off at the middle off take of column D1 in b) and partly returned to step a).