Process for the epoxidation of olefins
    2.
    发明授权
    Process for the epoxidation of olefins 有权
    烯烃环氧化方法

    公开(公告)号:US06838572B2

    公开(公告)日:2005-01-04

    申请号:US10669993

    申请日:2003-09-24

    摘要: A continuous process for the epoxidation of olefins with hydrogen peroxide in the presence of a heterogeneous catalyst promoting the epoxidation reaction, whereby the aqueous reaction mixture contains i) an olefin; ii) hydrogen peroxide; iii) less than 100 wppm of alkali metals, earth alkali metals, both irrespective whether in ionic, complex or covalently bonded form, bases or cations of bases having a pkB of less than 4.5, or combinations thereof; and, iv) at least 100 wppm of bases or cations of bases having a pkB of at least 4.5 or combinations thereof, whereby the wppm are based on the total weight of hydrogen peroxide in the reaction mixture.

    摘要翻译: 在促进环氧化反应的多相催化剂的存在下用过氧化氢环氧化烯烃的连续方法,由此含水反应混合物含有i)烯烃; ii)过氧化氢; iii)小于100wppm的碱金属,碱土金属,无论是在离子,复合或共价键合的形式,碱性或pKB小于4.5的碱的阳离子,或其组合; 和iv)至少100wppm的pkB至少为4.5的碱或碱的阳离子或其组合,其中wppm是基于反应混合物中过氧化氢的总重量。

    Process for the epoxidation of olefins
    4.
    发明授权
    Process for the epoxidation of olefins 有权
    烯烃环氧化方法

    公开(公告)号:US07169945B2

    公开(公告)日:2007-01-30

    申请号:US10724300

    申请日:2003-11-26

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12 Y02P20/584

    摘要: A process for the catalytic epoxidation of olefins in the presence of a titanium containing zeolite catalyst and a polar solvent whereby the deactivation of the catalyst upon recycling of the solvent has been considerably reduced. In the process one or more nitrogen containing compounds are introduced at some stage, a solvent stream is recovered, treated to contain less than 50 wppm nitrogen in the form of organic nitrogen compounds and at least a part of it is recycled to the epoxidation step. Also disclosed is a process for the catalytic epoxidation of propene which integrates the treatment and recycle of the solvent into the workup of the reaction mixture.

    摘要翻译: 一种在含钛沸石催化剂和极性溶剂的存在下烯烃的催化环氧化方法,从而显着减少了在溶剂再循环时催化剂失活。 在该过程中,在一些阶段引入一种或多种含氮化合物,回收溶剂流,将其处理为含有少于50wppm氮的有机氮化合物形式,并将其至少一部分再循环至环氧化步骤。 还公开了丙烯的催化环氧化方法,其将溶剂的处理和再循环整合到反应混合物的后处理中。

    Aqueous hydrogen peroxide solutions and method of making same
    5.
    发明授权
    Aqueous hydrogen peroxide solutions and method of making same 有权
    过氧化氢水溶液及其制备方法

    公开(公告)号:US07981391B2

    公开(公告)日:2011-07-19

    申请号:US12541674

    申请日:2009-08-14

    IPC分类号: C01B15/023 C01B15/037

    摘要: An aqueous hydrogen peroxide solution containing i) less than 50 wppm alkali metals, alkaline earth metals or combinations thereof in total, irrespective whether the alkali or alkaline earth metals are present in cationic or complex form; ii) less than 50 wppm of amines having a pkB of less than 4.5 or the corresponding protonated compounds in total; and iii) at least 100 wppm anions or compounds that can dissociate to form anions in total, where the wppm are based on the weight of hydrogen peroxide and the concentration of hydrogen peroxide is more than 50% by weight based on the total weight of the hydrogen peroxide solution. A process for preparation of said hydrogen peroxide solution and the use of said solution in a process for epoxidation of olefins is also disclosed.

    摘要翻译: 含有i)含有i)总计少于50wppm的碱金属,碱土金属或其组合的过氧化氢水溶液,不论碱金属或碱土金属是以阳离子或复合形式存在; ii)小于50wppm的pkB小于4.5的胺或相应的质子化合物总计; 和iii)至少100wppm的阴离子或化合物,其可以离解以形成阴离子,其中wppm基于过氧化氢的重量,并且过氧化氢的浓度基于总重量的50重量% 过氧化氢溶液。 还公开了制备所述过氧化氢溶液的方法和在烯烃环氧化方法中使用所述溶液。

    AQUEOUS HYDROGEN PEROXIDE SOLUTIONS AND METHOD OF MAKING SAMEÜ
    6.
    发明申请
    AQUEOUS HYDROGEN PEROXIDE SOLUTIONS AND METHOD OF MAKING SAMEÜ 有权
    过氧化氢水溶液及其制备方法

    公开(公告)号:US20090294727A1

    公开(公告)日:2009-12-03

    申请号:US12541674

    申请日:2009-08-14

    IPC分类号: C01B15/01

    摘要: An aqueous hydrogen peroxide solution containing i) less than 50 wppm alkali metals, alkaline earth metals or combinations thereof in total, irrespective whether the alkali or alkaline earth metals are present in cationic or complex form; ii) less than 50 wppm of amines having a pkB of less than 4.5 or the corresponding protonated compounds in total; and iii) at least 100 wppm anions or compounds that can dissociate to form anions in total, where the wppm are based on the weight of hydrogen peroxide and the concentration of hydrogen peroxide is more than 50% by weight based on the total weight of the hydrogen peroxide solution. A process for preparation of said hydrogen peroxide solution and the use of said solution in a process for epoxidation of olefins is also disclosed.

    摘要翻译: 含有i)含有i)总计少于50wppm的碱金属,碱土金属或其组合的过氧化氢水溶液,不论碱金属或碱土金属是以阳离子或复合形式存在; ii)小于50wppm的pkB小于4.5的胺或相应的质子化合物总计; 和iii)至少100wppm的阴离子或化合物,其可以离解以形成阴离子,其中wppm基于过氧化氢的重量,并且过氧化氢的浓度基于总重量的50重量% 过氧化氢溶液。 还公开了制备所述过氧化氢溶液的方法和在烯烃环氧化方法中使用所述溶液。

    Aqueous hydrogen peroxide solutions and method of making same
    7.
    发明授权
    Aqueous hydrogen peroxide solutions and method of making same 有权
    过氧化氢水溶液及其制备方法

    公开(公告)号:US07722847B2

    公开(公告)日:2010-05-25

    申请号:US10669978

    申请日:2003-09-24

    IPC分类号: C01B15/023 C01B15/037

    摘要: An aqueous hydrogen peroxide solution containing i) less than 50 wppm alkali metals, alkaline earth metals or combinations thereof in total, irrespective whether the alkali or alkaline earth metals are present in cationic or complex form; ii) less than 50 wppm of amines having a pkB of less than 4.5 or the corresponding protonated compounds in total; and iii) at least 100 wppm anions or compounds that can dissociate to form anions in total, where the wppm are based on the weight of hydrogen peroxide and the concentration of hydrogen peroxide is more than 50% by weight based on the total weight of the hydrogen peroxide solution. A process for preparation of said hydrogen peroxide solution and the use of said solution in a process for epoxidation of olefins is also disclosed.

    摘要翻译: 含有i)含有i)总计少于50wppm的碱金属,碱土金属或其组合的过氧化氢水溶液,不论碱金属或碱土金属是以阳离子或复合形式存在; ii)小于50wppm的pkB小于4.5的胺或相应的质子化合物总计; 和iii)至少100wppm的阴离子或化合物,其可以离解以形成阴离子,其中wppm基于过氧化氢的重量,并且过氧化氢的浓度基于总重量的50重量% 过氧化氢溶液。 还公开了制备所述过氧化氢溶液的方法和在烯烃环氧化方法中使用所述溶液。