Method for producing alkyl and/or cycloalkyl-substituted cyclic nitrile
    22.
    发明授权
    Method for producing alkyl and/or cycloalkyl-substituted cyclic nitrile 有权
    制备烷基和/或环烷基取代的环腈的方法

    公开(公告)号:US07102025B2

    公开(公告)日:2006-09-05

    申请号:US10951592

    申请日:2004-09-29

    IPC分类号: C07C253/28 C07B43/08

    CPC分类号: C07C253/28 C07C255/50

    摘要: In the production method of the invention, a cyclic aldehyde having an alkyl group and/or a cycloalkyl group directly bonded to a skeletal ring and a formyl group directly bonded to the skeletal ring is brought into contact with ammonia and oxygen in vapor phase in the presence of a catalyst. As a result thereof, the formyl group is selectively ammoxidized into a cyano group to convert the cyclic aldehyde into a corresponding cyclic nitrile. The method enables a long-term, high-yield production of the cyclic nitrile using a reduced amount of ammonia.

    摘要翻译: 在本发明的制造方法中,将与骨架环直接键合的具有烷基和/或环烷基的环醛和与骨架环直接结合的甲酰基与气相中的氨和氧接触, 存在催化剂。 作为其结果,甲酰基被选择性氨氧化成氰基以将环醛转化为相应的环腈。 该方法能够使用氨的量减少量的长期高产率的环腈。

    Process for producing a nitrile compound
    23.
    发明申请
    Process for producing a nitrile compound 有权
    腈化合物的制造方法

    公开(公告)号:US20050014944A1

    公开(公告)日:2005-01-20

    申请号:US10865824

    申请日:2004-06-14

    CPC分类号: C07C253/28 C07C255/51

    摘要: In a process for producing a nitrile compound comprising introducing a carbon ring or heterocyclic compound having organic substituents, ammonia and the air into a reactor and reacting the introduced compounds in the presence of a catalyst, during the reaction, a residual gas obtained after the formed nitrile compound is separated from a reaction gas discharged from the reactor is recycled to the reactor in an amount of 10 to 60% by volume based on the amount of the fresh raw material gas supplied to the reactor and the ratio of the amount by mole of molecular oxygen to the amount by mole of the organic substituent in the carbon ring or heterocyclic compound having organic substituents supplied to the reactor (O2/organic substituent) is kept within 1.5 to 7. The reaction is achieved under an advantageous condition and the nitrile compound can be produced industrially advantageously at a higher yield.

    摘要翻译: 在制备腈化合物的方法中,包括将具有有机取代基的碳环或杂环化合物,氨和空气引入反应器中并在催化剂存在下使引入的化合物反应,在反应过程中获得的残余气体 将从反应器排出的反应气体中分离的腈化合物以供给反应器的新鲜原料气体的量为基准,以10〜60体积%的量循环至反应器, 分子氧与提供给反应器的有机取代基的碳环或杂环化合物(O 2 /有机取代基)中的有机取代基的摩尔比保持在1.5〜7的范围内。在有利条件下进行反应,并且腈化合物 可以以较高的产率在工业上有利地生产。

    Process for producing nitrile compound and catalyst used therefor
    24.
    发明授权
    Process for producing nitrile compound and catalyst used therefor 有权
    制备腈化合物的方法和用于其的催化剂

    公开(公告)号:US6107510A

    公开(公告)日:2000-08-22

    申请号:US225553

    申请日:1999-01-05

    IPC分类号: C07C253/28 C07C253/00

    CPC分类号: C07C253/28 C07D213/85

    摘要: There are disclosed a process for producing a nitrile compound which comprises catalytically reacting an alkyl group-substituted aromatic compound or an alkyl group-substituted heterocyclic compound with a mixed gas containing ammonia and oxygen in the presence of 1 a catalyst comprising a vanadium oxide, a chromium oxide, a boron oxide, a molybdenum oxide, and an oxide of an alkali metal or an alkaline earth metal or 2 a catalyst comprising a vanadium oxide, a chromium oxide, a boron oxide, an alkali metal oxide, and a heteropolyacid. According to the above process and by virtue of the specific catalyst, it is made possible to produce a nitrile compound having an aromatic ring or a heterocyclic ring in an extremely advantageous manner, that is, in high yield at high selectivity to the objective product.

    摘要翻译: 公开了一种制备腈化合物的方法,该方法包括在+ E,crc 1 + EE催化剂存在下使烷基取代的芳族化合物或烷基取代的杂环化合物与含有氨和氧的混合气体催化反应 包括氧化钒,氧化铬,氧化硼,氧化钼和碱金属或碱土金属的氧化物,或+ E,crc 2 + EE,包含氧化钒,氧化铬,硼 氧化物,碱金属氧化物和杂多酸。 根据上述方法,通过具体的催化剂,可以非常有利地制备具有芳香环或杂环的腈化合物,即高目标产物的高选择性。

    Method for production of nuclear halogenated aromatic compound possesing
cyano groups
    25.
    发明授权
    Method for production of nuclear halogenated aromatic compound possesing cyano groups 失效
    生产含有氰基的核卤化芳香族化合物的方法

    公开(公告)号:US5789582A

    公开(公告)日:1998-08-04

    申请号:US813550

    申请日:1997-03-07

    摘要: A nuclear halogenated aromatic compound possessing cyano groups is produced by a method using as a raw material an aromatic compound which possesses cyano groups and assumes a solid state at room temperature and subjecting the raw material to a procedure comprising a step of melting and transporting the compound by a means transport-melting, a step of vaporizing the compound, a step of mixing the compound with a halogen gas, and a step of causing the vapor of the compound to react with the halogen gas in vapor phase in the presence of a catalyst sequentially in the order mentioned, which comprises maintaining a content of a self-condensate of the aromatic compound possessing cyano groups which arise during the melting of the aromatic compound possessing cyano groups in a gas of the compound which reacts with the halogen gas to a level of not more than 2.5 mol % based on the compound. The catalyst used in the method is activated carbon such that the average pore radius thereof determined by the nitrogen adsorption method is not less than 12.2 .ANG. and the cumulative pore volume of the portion of the activated carbon having pore radiuses in the range of 5-100 .ANG. determined by the steam adsorption method is not less than 0.45 g/cc.

    摘要翻译: 具有氰基的核卤代芳族化合物是通过使用具有氰基并在室温下呈现固态的芳族化合物作为原料的方法制备的,并使原料经历包括熔融和输送化合物的步骤 通过输送熔融的方法,使化合物蒸发的步骤,将化合物与卤素气体混合的步骤以及在催化剂存在下使化合物的蒸气与气相反应的步骤 按照上述顺序依次进行,其包括将与卤素气体反应的化合物的气体中具有氰基的芳香族化合物熔融时产生的具有氰基的芳香族化合物的自缩合物的含量保持在一定水平 不大于2.5摩尔%。 该方法中使用的催化剂是活性炭,使得其通过氮吸附法测定的平均孔半径不小于12.2安培,并且具有孔半径的活性炭部分的累积孔体积在5-100范围内 蒸汽吸附法测定的ANGSTROM不低于0.45 g / cc。

    Process for producing 2,6-dichlorobenzonitrile
    26.
    发明授权
    Process for producing 2,6-dichlorobenzonitrile 失效
    2,6-二氯苄腈的制备方法

    公开(公告)号:US4883897A

    公开(公告)日:1989-11-28

    申请号:US135353

    申请日:1987-12-21

    CPC分类号: C07C255/00

    摘要: A process for producing 2,6-dichlorobenzonitrile by ammoxidation comprising contacting a starting gas consisting of 2,6-dichlorotoluene, air and ammonia, which comprises carrying out this reaction under the following conditions:(a) the concentration of 2,6-dichlorotoluene in the starting gas is 2.6 mole % or more.(b) the reactor effluent gas is contacting with water to cool to a temperature in the range of 50.degree. to 90.degree. C., whereby 2,6-dichlorobenzonitrile in the reactor effluent gas is collected as a slurry in which solidified 2,6-dichlorobenzonitrile is dispersed in water, and 2,6-dichlorobenzonitrile is obtained from the slurry, and(c) the cooled reactor effluent gas from which 2,6-dichlorobenzonitrile has been removed is contacted with water again to cool to a temperature in the range of 0.degree. to 40.degree. C., whereby unreacted 2,6-dichlorotoluene in the gas is collected as a dispersion in which it is dispersed in water and 2,6-dichlorotoluene is recovered from the dispersion.Also, there is disclosed a process for purifying 2,6-dichlorobenzonitrile obtained by subjecting 2,6-dichlorotoluene to ammoxidation, which comprises subjecting the 2,6-dichlorobenzonitrile to solid-liquid separation procedure in a molten state.