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    Continuous industrial production of unsaturated aliphatic aldehydes in a tube bundle reactor
    1.
    发明授权
    Continuous industrial production of unsaturated aliphatic aldehydes in a tube bundle reactor 失效
    在管束反应器中连续工业生产不饱和脂族醛

    公开(公告)号：US6013843A

    公开(公告)日：2000-01-11

    申请号：US85836

    申请日：1998-05-28

    申请人： Werner Aquila ,  Hartwig Fuchs ,  Otto Worz ,  Wilhelm Ruppel ,  Klaus Halbritter

    发明人： Werner Aquila ,  Hartwig Fuchs ,  Otto Worz ,  Wilhelm Ruppel ,  Klaus Halbritter

    IPC分类号： B01J23/52 ,  B01J8/02 ,  B01J8/08 ,  C07B61/00 ,  C07C45/38 ,  C07C45/67 ,  C07C47/21 ,  C07C47/22 ,  C07C45/00

    CPC分类号： C07C45/38 ,  B01J8/0242 ,  B01J8/087 ,  C07C45/67 ,  B01J2208/00212

    摘要： A process for continuous industrial production of unsaturated aliphatic aldehydes having a boiling range from 95 to 136.degree. C. by oxidative dehydrogenation of the corresponding alcohols with an oxygen-comprising gas over a supported catalyst consisting of copper, silver and/or gold on an inert support in a tube bundle reactor, rapid cooling of the reaction gases and removal of the aldehydes from the resulting condensate with recycling of the unconverted alcohols comprisesa) vaporizing the alcohol,b) admixing the alcohol vapor with an oxygen-comprising gas,c) initially passing the resulting oxygen-comprising alcohol vapor at above the dew point of the alcohol but below the commencement temperature of the reaction through a layer of one of the abovementioned supported catalysts which is at least 0.5 cm in thickness and only thend) reacting the oxygen-comprising alcohol vapor at from 300 to 600.degree. C. in a sufficient number, for the desired capacity, of parallel reaction tubes surrounded by a fluidic heat transfer medium, packed with the supported catalyst and having an internal diameter D of from about 0.5 to 3 cm and a length of at least 5 cm, to form the corresponding aldehyde.

    摘要翻译： 通过相对应的醇与含氧气体在由铜，银和/或金组成的负载型催化剂上惰性惰性的连续工业生产不饱和脂族醛的方法，其沸程为95至136℃ 在管束反应器中的支撑，反应气体的快速冷却以及未转化的醇的再循环从所得冷凝物中除去醛包括a）蒸发醇，b）将醇蒸气与含氧气体混合，c） 首先将所得的含氧醇醇蒸气在醇的露点以上但低于反应开始温度的上述负载型催化剂层中的至少0.5cm厚度，然后d）使 含氧的醇蒸气在300-600℃下以足够的数量容纳所需的并联反应管 由流体传热介质引入，填充有负载的催化剂并且具有约0.5至3cm的内径D和至少5cm的长度以形成相应的醛。

    Process for the preparation of &agr;-diketones from ketols or ketals from ketols
    8.
    发明授权
    Process for the preparation of &agr;-diketones from ketols or ketals from ketols 失效
    从酮基酮或酮缩酮制备α-二酮的方法

    公开(公告)号：US06242653B1

    公开(公告)日：2001-06-05

    申请号：US09377732

    申请日：1999-08-19

    申请人： Werner Aquila ,  Jörg Botzem ,  Melanie Brunner ,  Hartwig Fuchs ,  Wolfgang Krause ,  Klaus Pandl ,  Ulrich Schäfer-Lüderssen

    发明人： Werner Aquila ,  Jörg Botzem ,  Melanie Brunner ,  Hartwig Fuchs ,  Wolfgang Krause ,  Klaus Pandl ,  Ulrich Schäfer-Lüderssen

    IPC分类号： C07C4529

    CPC分类号： C07C45/39 ,  C07C45/515 ,  C07C49/12 ,  C07C49/175 ,  C07C49/517

    摘要： The process for the preparation of carbonyl compounds of the formula I where R1 and R2 are a hydrocarbon radical, or R1 and R2 together are an unsubstituted or substituted alkylene group, and X is=O or two alkoxy groups, comprises oxidizing alcohols of the formula II where R1 to R2 and X are as defined above, with oxygen in the gaseous phase a) at temperatures of from 270 to 600° C. on silver coated catalysts which comprise an abrasion-resistant coating of metallic silver on a core of inert support material, or b) at temperatures of from 450 to 750° C. on silver crystals and/or copper crystals having a particle size of from 0.1 to 2.5 mm for a residence time of at most 0.1 second. Also claimed is an advantageous overall process for the preparation of &agr;-diketones, preferably diacetal, from the corresponding ketone, in particular methyl ethyl ketone, via the carbonyl compounds of the formula I where X is two alkoxy groups.

    摘要翻译： 制备式I的羰基化合物的方法，其中R 1和R 2是烃基，或者R 1和R 2一起是未取代或取代的亚烷基，并且X是= O或两个烷氧基，包括氧化式II的醇，其中R 1 在含有惰性载体材料芯上的金属银的耐磨涂层的银涂覆的催化剂上，在温度为270-600℃的温度下，R2和X如上定义，在气相中为氧） 在450至750℃的温度下，在银晶体和/或具有0.1至2.5mm的粒度的铜晶体上，停留时间至多为0.1秒。还要求保护的是制备α 二酮，优选二缩醛，通过其中X是两个烷氧基的式I的羰基化合物从相应的酮，特别是甲基乙基酮中获得。

    Process for the preparation of &agr;-diketones from ketols or ketals from ketols
    9.
    发明授权
    Process for the preparation of &agr;-diketones from ketols or ketals from ketols 失效
    从酮基酮或酮缩酮制备α-二酮的方法

    公开(公告)号：US06316676B1

    公开(公告)日：2001-11-13

    申请号：US09794075

    申请日：2001-02-28

    申请人： Werner Aquila ,  Jörg Botzem ,  Melanie Brunner ,  Hartwig Fuchs ,  Wolfgang Krause ,  Klaus Pandl ,  Ulrich Schäfer-Lüderssen

    发明人： Werner Aquila ,  Jörg Botzem ,  Melanie Brunner ,  Hartwig Fuchs ,  Wolfgang Krause ,  Klaus Pandl ,  Ulrich Schäfer-Lüderssen

    IPC分类号： C07C4529

    CPC分类号： C07C45/39 ,  C07C45/515 ,  C07C49/12 ,  C07C49/175 ,  C07C49/517

    摘要： The process for the preparation of carbonyl compounds of the formula I where R1 and R2 are a hydrocarbon radical, or R1 and R2 together are an unsubstituted or substituted alkylene group, and X is ═O or two alkoxy groups, comprises oxidizing alcohols of the formula II  where R1 to R2 and X are as defined above, with oxygen in the gaseous phase a) at temperatures of from 270 to 600° C. on silver coated catalysts which comprise an abrasion-resistant coating of metallic silver on a core of inert support material, or b) at temperatures of from 450 to 750° C. on silver crystals and/or copper crystals having a particle size of from 0.1 to 2.5 mm for a residence time of at most 0.1 second. Also claimed is an advantageous overall process for the preparation of &agr;-diketones, preferably diacetal, from the corresponding ketone, in particular methyl ethyl ketone, via the carbonyl compounds of the formula I where X is two alkoxy groups.

    摘要翻译： 制备式I其中R 1和R 2的羰基化合物的方法是烃基，或者R 1和R 2一起是未取代或取代的亚烷基，并且X是= O或两个烷氧基，包括将式II的氧化醇，其中R 1 在含有惰性载体材料芯上的金属银的耐磨涂层的银涂覆的催化剂上，在温度为270-600℃的温度下，R2和X如上定义，在气相中为氧） 在450至750℃的温度下，在银晶体和/或具有0.1至2.5mm的粒度的铜晶体上，停留时间至多为0.1秒。还要求保护的是制备α 二酮，优选二缩醛，通过其中X是两个烷氧基的式I的羰基化合物从相应的酮，特别是甲基乙基酮中获得。

    Preparation of citral
    10.
    发明授权
    Preparation of citral 有权
    柠檬醛的制备

    公开(公告)号：US06175044B1

    公开(公告)日：2001-01-16

    申请号：US09404548

    申请日：1999-09-24

    申请人： Jörg Therre ,  Gerd Kaibel ,  Werner Aquila ,  G{umlaut over (u)}nter Wegner ,  Hartwig Fuchs

    发明人： Jörg Therre ,  Gerd Kaibel ,  Werner Aquila ,  G{umlaut over (u)}nter Wegner ,  Hartwig Fuchs

    IPC分类号： C07C4551

    CPC分类号： C07C45/515 ,  C07C45/513 ,  C07C45/67 ,  C07C47/21

    摘要： 3,7-Dimethyl-2,6-octadien-1-al of formula I is prepared continuously by: thermally cleaving, in the presence or absence of an acid catalyst, 3-methyl-2-buten-1-al diprenyl acetal of formula II: thereby eliminating 3-methyl-2-buten-1-ol of formula III and yielding cis/trans-prenyl 3-methylbutadienyl ether of formula IV: thermally rearranging the resultant butadienyl ether of formula IV thereby yielding 2,4,4-trimethyl-3-formyl-1,5-hexadiene of formula V: subsequently rearranging intermediate (V) thereby yielding citral product of formula I, which comprises: as the reaction proceeds, continuously distilling the reaction mixture thereby continuously removing prenol, which is formed by degradation of acetal II, and the intermediates of formula IV and V and any citral product which is formed during the reaction; and thermally rearranging said intermediates of formula IV and V at a temperature of 100-200° C. in the absence or presence of said prenol to form citral product.

    摘要翻译： 通过以下方式连续制备式I的3,7-二甲基-2,6-辛二烯-1-醇：在存在或不存在酸催化剂的情况下，热裂解3-甲基-2-丁烯-1-al阮内烯 式II：由此除去式III的3-甲基-2-丁烯-1-醇，得到式IV的顺/反 - 异戊烯基3-甲基丁二烯基醚：热重新排列所得的式IV的丁二烯基醚，由此得到2,4,4 式V的 - 三甲基-3-甲酰基-1,5-己二烯：随后重新排列中间体（V），从而产生式I的柠檬醛产物，其包括：随着反应的进行，连续蒸馏反应混合物，从而连续除去前醇， 由缩醛II的降解形成，以及式IV和V的中间体以及在反应期间形成的任何柠檬醛产物; 在不存在或存在所述prenol的情况下，在100-200℃的温度下热处理所述式IV和V的中间体，以形成柠檬醛产物。