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    Process for ammoxidation
    3.
    发明授权
    Process for ammoxidation 失效

    公开(公告)号：US4774352A

    公开(公告)日：1988-09-27

    申请号：US808684

    申请日：1985-12-17

    申请人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    发明人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    IPC分类号： B01J23/18 ,  B01J23/22 ,  B01J23/28 ,  B01J23/90 ,  B01J27/057 ,  C01C3/02 ,  C07C120/00 ,  C07C120/14

    CPC分类号： B01J23/18 ,  B01J23/22 ,  B01J23/28 ,  B01J23/90 ,  B01J27/0576 ,  C01C3/0216 ,  C01C3/0233 ,  C01C3/0241 ,  C07C253/26 ,  C07C253/28 ,  Y02P20/52 ,  Y02P20/584

    摘要： The activity of a tellurium-free metal oxide catalyst used for ammoxidation of organic compounds at a temperature of from 300.degree. C. to 600.degree. C. is improved in the presence of (a) elemental tellurium or a tellurium compound which is in contact with said catalyst or in the presence of (a) elemental tellurium or a tellurium compound and (b) a molybdenum compound which are in contact with said catalyst. This activity improvement process can be applied to both the fresh catalysts and the spent catalyst having a deteriorated activity. The above described component (a) is preferably composed of a tellurium containing solid to be used in a state of a dry physical mixture with said catalyst. The above described components (a) and (b) are preferably composed of a tellurium containing solid and a molybdenum containing solid respectively or a tellurium-molybdenum containing solid to be used in a state of a dry physical mixture with said catalyst.The tellurium containing solid, the molybdenum containing solid or the tellurium-molybdenum containing solid may be at least a member selected from the following group:(1) A solid wherein a tellurium component and/or a molybdenum component is supported or unsupported on an inert carrier,(2) A solid wherein a tellurium component and/or a molybdenum component is added to a metal oxide catalyst (fresh or spent) and/or said metal oxide catalyst is enriched with the tellurium component and/or the molybdenum component, and(3) A solid composed of a compound containing at least one element selected from the group consisting of an alkali metal, an alkaline earth metal, La, Ce, V, Nb, Cr, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, B, Al, Ga, Ge, Sn, Pb, P, AS, Sb, Bi, S and Se in addition to tellurium, molybdenum or tellurium and molybdenum, or a mixture of these compounds, supported or unsupported on an inert carrier.The present invention is advantageously applied to ammoxidation in a fluidized bed.

    Process for improving activity of tellurium containing metal oxide catalysts
    5.
    发明授权
    Process for improving activity of tellurium containing metal oxide catalysts 失效
    提高含碲金属氧化物催化剂活性的方法

    公开(公告)号：US4709071A

    公开(公告)日：1987-11-24

    申请号：US847074

    申请日：1986-05-21

    申请人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    发明人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    IPC分类号： B01J37/08 ,  B01J23/90 ,  B01J27/02 ,  B01J27/057 ,  B01J27/30 ,  C01B19/00 ,  C01B21/087 ,  C01C3/02 ,  C07C5/48 ,  C07C15/00 ,  C07C120/14 ,  C07C120/00

    CPC分类号： B01J27/0576 ,  C01C3/0216 ,  C01C3/0233 ,  C01C3/0241 ,  C07C253/26 ,  C07C5/48 ,  Y02P20/52 ,  Y02P20/584

    摘要： A process for improving the activity of tellurium containing metal oxide catalysts useful as catalysts for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds by heating the catalysts together with a tellurium containing solid and an optional molybdenum containing solid to a temperature up to about 900.degree. C. in a gaseous atmosphere. The process can be effectively applied to deteriorated or spent catalysts, the activity of which has been deteriorated due to use for a long period of time. The tellurium containing solid used as an activity improving agent is elemental tellurium and the molybdenum containing solid is selected from the group consisting of (i) a molybdenum compound, (ii) at least one molybdenum compound supported on an inert carrier, and (iii) a molybdenum enriched catalyst prepared by adding a Mo component to a metal oxide catalyst (which may be a fresh catalyst or a deteriorated catalyst). In a particularly preferred embodiment, the process for improving the activity according to the present invention can be carried out by contacting the deteriorated tellurium containing metal oxide catalyst with the elemental tellurium and optional molybdenum-containing solid in a fluidized-bed. More preferably, the contact is carried out during the oxidation, ammoxidation or oxidative dehydrogenation reaction.

    摘要翻译： 通过将催化剂与含碲固体和任选的含钼固体加热至高达约900℃的温度，来改善含碲金属氧化物催化剂的活性的方法，所述催化剂用作有机化合物的氧化，氨氧化或氧化脱氢催化剂 在气态气氛中。 该方法可以有效地应用于恶化或废催化剂，其活性由于长期使用而劣化。 用作活性改进剂的含碲固体是元素碲，含钼固体选自（ⅰ）钼化合物，（ⅱ）负载在惰性载体上的至少一种钼化合物，和（ⅲ） 通过将Mo组分添加到金属氧化物催化剂（其可以是新鲜催化剂或劣化的催化剂）中制备的富钼催化剂。 在特别优选的实施方案中，根据本发明的改进活性的方法可以通过使劣化的含碲的金属氧化物催化剂与元素碲和任选的含钼固体在流化床中接触来进行。 更优选地，在氧化，氨氧化或氧化脱氢反应期间进行接触。

    Process for improving activity of tellurium containing metal oxide catalysts
    6.
    发明授权
    Process for improving activity of tellurium containing metal oxide catalysts 失效
    提高含碲金属氧化物催化剂活性的方法

    公开(公告)号：US4709070A

    公开(公告)日：1987-11-24

    申请号：US669978

    申请日：1984-11-09

    申请人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    发明人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    IPC分类号： B01J37/08 ,  B01J23/90 ,  B01J27/02 ,  B01J27/057 ,  B01J27/30 ,  C01B19/00 ,  C01B21/087 ,  C01C3/02 ,  C07C5/48 ,  C07C15/00 ,  C07C120/00 ,  C07C120/14

    CPC分类号： B01J27/0576 ,  C01C3/0216 ,  C01C3/0233 ,  C01C3/0241 ,  C07C253/26 ,  C07C5/48 ,  Y02P20/52 ,  Y02P20/584

    摘要： A process for improving the activity of tellurium containing metal oxide catalysts useful as catalysts for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds by heating the catalysts together with an activity-improving agent to a temperature up to about 900.degree. C. in a gaseous atmosphere. The process can be effectively applied to deteriorated or spent catalysts, the activity of which has been deteriorated due to use for a long period of time. The activity improviding agent is selected from the group consisting of(i) a tellurium-molybdenum compound unsupported or supported on an inert carrier;(ii) a dry mixture of a tellurium compound and a molybdenum containing material selected from the group consisting of a molybdenum compound, a molybdenum enriched catalyst and a molybdenum compound supported on an inert carrier;(iii) a dry mixture of a tellurium enriched catalyst and a molybdenum compound unsupported or supported on an inert carrier; and(iv) a dry mixture of a tellurium compound supported on an inert carrier and a molybdenum containing material selected from the group consisting of a molybdenum compound, a molybdenum enriched catalyst and a molybdenum compound supported on an inert carrier. In a particularly preferred embodiment, the process according to the present invention can be carried out by contacting the tellurium containing metal oxide catalysts with the activity-improving agent in a fluidized-bed. More preferably, the contact is carried out during the oxidation, ammoxidation or oxidative hydrogenation reaction.

    摘要翻译： 一种用于提高含碲的金属氧化物催化剂的活性的方法，其可用作催化剂用于有机化合物的氧化，氨氧化或氧化脱氢，通过将催化剂与活性改进剂一起加热至高达约900℃的温度在气氛中 。 该方法可以有效地应用于恶化或废催化剂，其活性由于长期使用而劣化。 活性成分剂选自（i）无载体或负载在惰性载体上的碲钼化合物; （ii）选自钼化合物，富钼催化剂和负载在惰性载体上的钼化合物的碲化合物和含钼材料的干混合物; （iii）不含碲的催化剂和不含负载或负载在惰性载体上的钼化合物的干混合物; 和（iv）负载在惰性载体上的碲化合物和选自钼化合物，富钼催化剂和负载在惰性载体上的钼化合物的含钼材料的干混合物。 在特别优选的实施方案中，根据本发明的方法可以通过在流化床中使含碲金属氧化物催化剂与活性改进剂接触来进行。 更优选地，在氧化，氨氧化或氧化氢化反应期间进行接触。

    Process for improving activity of tellurium containing metal oxide catalysts
    7.
    发明授权
    Process for improving activity of tellurium containing metal oxide catalysts 失效
    提高含碲金属氧化物催化剂活性的方法

    公开(公告)号：US4618593A

    公开(公告)日：1986-10-21

    申请号：US379205

    申请日：1982-05-17

    申请人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    发明人： Yutaka Sasaki ,  Yutaka Kiyomiya ,  Toshio Nakamura

    IPC分类号： B01J37/08 ,  B01J23/90 ,  B01J27/02 ,  B01J27/057 ,  B01J27/30 ,  C01B19/00 ,  C01B21/087 ,  C01C3/02 ,  C07C5/48 ,  C07C15/00 ,  B01J23/92 ,  C07C120/14 ,  C07C121/32

    CPC分类号： B01J27/0576 ,  C01C3/0216 ,  C01C3/0233 ,  C01C3/0241 ,  C07C253/26 ,  C07C5/48 ,  Y02P20/52 ,  Y02P20/584

    摘要： A regeneration process for tellurium-containing metal oxide catalysts used in the process for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds at a temperature of about 300.degree. C. to about 600.degree. C. The process can be effectively applied to such catalysts which have become partially deactivated during the reaction. According to the present process, the deactivated catalyst is regenerated at the reaction temperature under a non-reductive atompshere by contacting the deactivated catalyst with a tellurium-enriched metal oxide catalyst having a tellurium content higher than that of a fresh metal oxide catalyst used in the reaction, or by contacting the deactivated catalyst at the reaction temperature with a tellurium-molybdenum-enriched catalyst system selected from the group consisting of (i) a physical blend of a tellurium-enriched catalyst and a molybdenum-enriched catalyst and (ii) a tellurium-molybdenum-enriched catalyst, the tellurium and molybdenum contents being higher than those of the fresh metal oxide catalyst used in the reaction. In a particularly preferred embodiment, the process is applied to tellurium-containing metal oxide catalysts in a fluidized bed. More preferably, the process is carried out during the oxidation, ammoxidation or oxidative dehydrogenation reaction.

    摘要翻译： 在约300℃至约600℃的温度下，用于氧化，氨氧化或氧化脱氢有机化合物的方法中的含碲金属氧化物催化剂的再生方法。该方法可有效地应用于具有 在反应过程中部分失活。 根据本发明的方法，通过使失活的催化剂与碲含量高于新鲜金属氧化物催化剂的碲含量的富碲化金属氧化物催化剂接触而在非还原性原子团体的反应温度下再生失活催化剂 或通过使反应温度下的失活的催化剂与选自以下的碲 - 钼 - 富集催化剂体系接触：（i）富含碲的催化剂和富钼催化剂的物理共混物和（ii） 碲钼钼催化剂，碲和钼含量高于反应中使用的新鲜金属氧化物催化剂。 在特别优选的实施方案中，该方法在流化床中应用于含碲金属氧化物催化剂。 更优选地，该过程在氧化，氨氧化或氧化脱氢反应期间进行。

    Process for producing 2,6-dichlorobenzonitrile
    8.
    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

    申请人： Yutaka Kiyomiya ,  Yasumasa Yamaguchi ,  Masahiro Ushigome ,  Hiroshi Murata

    发明人： Yutaka Kiyomiya ,  Yasumasa Yamaguchi ,  Masahiro Ushigome ,  Hiroshi Murata

    IPC分类号： C07C253/28 ,  C07C255/49 ,  C07C255/50

    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.