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    • 4. 发明授权
    • Continuous industrial production of unsaturated aliphatic aldehydes in a
tube bundle reactor
    • 在管束反应器中连续工业生产不饱和脂族醛
    • US6013843A
    • 2000-01-11
    • US85836
    • 1998-05-28
    • Werner AquilaHartwig FuchsOtto WorzWilhelm RuppelKlaus Halbritter
    • Werner AquilaHartwig FuchsOtto WorzWilhelm RuppelKlaus Halbritter
    • B01J23/52B01J8/02B01J8/08C07B61/00C07C45/38C07C45/67C07C47/21C07C47/22C07C45/00
    • C07C45/38B01J8/0242B01J8/087C07C45/67B01J2208/00212
    • 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.
    • 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。
    • 10. 发明授权
    • Preparation of alpha-substituted upsilon-butyrolactones
    • 制备α-取代的上升 - 丁内酯
    • US4831166A
    • 1989-05-16
    • US47131
    • 1987-05-08
    • Heinz EckhardtWalter GramlichWalter BestKlaus Halbritter
    • Heinz EckhardtWalter GramlichWalter BestKlaus Halbritter
    • B01J27/10B01J27/18B01J27/232B01J31/02C07B61/00C07D307/33C07D315/00
    • C07D307/33C07D315/00
    • .gamma.-butyrolactones of the general formula I ##STR1## where R.sup.1 is hydrogen or alkyl of 1 to 4 carbon atoms which may be substituted by lower alkoxy or acyloxy and R.sup.2 is hydrogen or straight-chain or branched alkyl which is unsubstituted or substituted by a functional group or is aryl, are prepared by reacting an alkylene oxide of the general formula II ##STR2## with an acylacetate of the general formla III ##STR3## where R.sup.1 and R.sup.2 have the above meanings and R.sup.3 and R.sup.4 are each alkyl of 1 to 6 carbon atoms or aryl, and R.sup.4 may furthermore be hydrogen, in the presence of a catalyst at elevated temperatures, by a process in which the reaction is carried out in the presence of an alkali metal halide, of an ammonium halide, preferably a quaternary ammonium halide, of a phosphonium halide, of an alkali metal phosphate or of an alkali metal carbonate at from 20.degree. to 200.degree. C. and under from 1 to 50 bar.
    • 通式I(I)的γ-丁内酯,其中R 1是氢或可以被低级烷氧基或酰氧基取代的具有1至4个碳原子的烷基,R 2是氢或未被取代的直链或支链烷基, 被官能团取代或是芳基,通过使通式II(II)的烯化氧与一般形式III(III)的酰基乙酸酯反应制备,其中R 1和R 2具有上述含义, R 3和R 4各自为1至6个碳原子的烷基或芳基,并且R 4还可以在催化剂存在下在升高的温度下通过其中反应在碱金属卤化物 卤化铵,碱金属磷酸盐或碱金属碳酸盐的卤化铵,优选季铵卤化物,在20至200℃和1至50巴之间。