• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU942583A3
    申请号:SU782668604
    申请日:1978-09-22
    公开日:1982-07-07
    发明作者:Дома Жан-Клод；Тароль Робер；Биола Жорж
    申请人:Рон-Пуленк Агрошими (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD FOR PRODUCING A MIXTURE OF CHLORANILINES
    one
    This invention relates to an advanced method for producing a mixture of chlorine by dehalogenation of the corresponding compounds or chloronitrobenzenes containing significantly more chlorine atoms.
    The iavesten method of producing halogenated aromatics by dehalogenating halo-containing aromatics in the presence of a catalyst containing a salt or oxide of copper or silver in the amount of 6% of the carrier.
    The process is carried out at 28 ° -420 ° C tl.
    The disadvantage of this method is that when using this catalyst, it is necessary to frequently regenerate the catalyst due to the formation of carbon deposits during the reaction, which appear due to decomposition of a part of the starting compounds.
    The purpose of the invention is to simplify the process.
    This goal is achieved by the fact that in the process of obtaining a mixture of chloroanilines by dehalogenation of di-, or tri-, or tegra-chloronitrobenzene or
    5 corresponding polychloro nilins in the absence of hydrogen and a hydrogenation catalyst containing copper oxide in an amount of 6% on a carrier at 28O-42O s, use a catalyst containing up to 10% rhodium, iridium, ruthenium, palladium or platinum in an amount of 0.5% by weight.
    The carrier is typically filled in the form of granules of aluminum hydroxide or silicon dioxide. Under these dechlorination conditions, the rapid and amount of conversion of polychlorinated nitro-derivatives occurs, and the resulting mixture of chlorine nilins contains mainly
    20 3,5-dichloroNILIN.
    Example 1. Use a tubular reactor containing 100 g of catalyst granules ranging from 20O to. 100 microns in the fluidized bed. The catalyst is obtained by impregnation of agrarian alumina, having a specific surface equal to ZOO-iVr, with an aqueous solution taken in a volume corresponding to the pore volume and containing 6 g of copper in the form of a finished catalyst and 0.5 g Rhodium, taken as trichloride Rhodium, or iridium as chloridiridic acid, or ruthenium as ruthenium trichloride, palladium as palladium chloride, or platinum as platinum dichloride. After impregnation, each catalyst is dried at 15 ° -18 ° C. 62 g of 2, 3, 4, B-tetrachloronitrobenzene, 75 liters of hydrogen per hour are introduced into the reactor. The temperature in the reactor is maintained practically constant by cooling liquid heat carrier. The temperature in the reactor is approximately. The contact time of the gas mixture with the catalyst is 3 seconds, and the entire reaction takes 4 hours. From the upper part of the dehalogenation zone, the reaction mixture is sent to a water-wash column, where the release of anilines and hydrochloric acid occurs, . The sodium mass is then neutralized with the recovered mass coming from the bottom of the washing column so as to isolate the organic phase, which is analyzed by thin layer chromatography.
    In the table, the values of the yields are indicated in mol%, relative to the number of moles of the introduced THTHB (tetrachloronitrobenzene) after consecutive 4-h experiments. The yield of carbon C is expressed in mol. The% TNCNB subjected to pyrolysis was calculated from the amount of carbon deposited on the catalyst, the amount of which is expressed in weight. % catalyst after the experiment. As a comparison, the results obtained when carrying out the process under similar conditions, but using only 6% copper, are presented. The method makes it possible to significantly reduce, by an amount of 50%, the amount of carbon deposited on the catalyst, when using a mixture of catalysts, and to significantly increase the number of compounds having chlorine atoms in the (L-position) ring.
    权利要求:
    Claims (1)
    [1]
    Claims of the invention of polychlor tires in the presence of
    The method of obtaining a mixture of hporanipi-containing copper oxide in the amount of 6%
    by dehalogenation of di-tri-on carrier, at 28–420 s, about 1 tl or tetrachloronitrobenzene, or corresponding to the fact that, in order to simplify hydrogen and hydrogenation catalyst.
    5 9426S36
    process, use a catalyst, a source of information,
    containing additionally rhodium, iridium, taken in the course of ruthenium, palladium or platinum in coli-1. Franpwn patent number 2162782,
    Oh, 5 wt. % .cl. C O7 C 85 / OO, published. 1973.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DK419378A|1979-03-23|
    IE47477B1|1984-03-21|
    BR7806120A|1979-05-02|
    AT360504B|1981-01-12|
    IT1099500B|1985-09-18|
    JPS5846499B2|1983-10-17|
    FR2403990B1|1983-01-21|
    EP0001372A2|1979-04-04|
    DE2860202D1|1981-01-08|
    CA1130775A|1982-08-31|
    FR2403990A1|1979-04-20|
    IL55618D0|1978-12-17|
    JPS5463030A|1979-05-21|
    US4206147A|1980-06-03|
    IT7828006D0|1978-09-22|
    IL55618A|1982-02-28|
    ATA683978A|1980-06-15|
    EP0001372B1|1980-10-01|
    EP0001372A3|1979-04-18|
    IE781902L|1979-03-22|
    DD138974A5|1979-12-05|
    ES473535A1|1979-05-16|
    GB2007668A|1979-05-23|
    HU178079B|1982-02-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3148217A|1961-11-16|1964-09-08|Gen Aniline & Film Corp|Catalytic hydrogenation of halonitrobenzene compounds|
    US3839193A|1970-04-10|1974-10-01|Universal Oil Prod Co|Hydrocarbon conversion with a trimetallic catalytic composite|
    BE792080A|1971-11-30|1973-05-29|Rhone Progil|DEHALOGENATION OF POLYHALOGENOUS AROMATIC COMPOUNDS|
    US3867312A|1972-02-07|1975-02-18|Ethyl Corp|Exhaust gas catalyst support|
    US3912783A|1972-12-05|1975-10-14|Bayer Ag|Process and catalyst for preparing of 3-halogen-and 3,5-dihalogen-phenols|
    DE2344926C3|1973-09-06|1981-05-07|Bayer Ag, 5090 Leverkusen|Process for the preparation of 3-halophenols or 3,5-dihalophenols|
    GB1458633A|1974-09-17|1976-12-15|Ici Ltd|Process for dehalogenating aromatic compounds|
    DE2503187C3|1975-01-27|1979-05-31|Bayer Ag, 5090 Leverkusen|Process for the preparation of chlorine-meta-substituted anilines|
    FR2334415A1|1975-12-08|1977-07-08|Raffinage Cie Francaise|NEW CATALYSTS, THEIR PREPARATION PROCESS AND THEIR APPLICATION TO THE TRANSFORMATION OF HYDROCARBON FEEDS|FR2449077B2|1979-02-15|1983-04-29|Rhone Poulenc Agrochimie|
    FR2487824B1|1980-08-01|1984-08-24|Rhone Poulenc Agrochimie|
    DE3104643A1|1981-02-10|1982-08-19|Bayer Ag, 5090 Leverkusen|METHOD FOR PRODUCING P-CHLORINE-SUBSTITUTED 2,6-DIAMINOTOLUOL, IF POSSIBLE|
    DE3127026A1|1981-07-09|1983-01-20|Bayer Ag, 5090 Leverkusen|METHOD FOR PRODUCING M-CHLORINE-SUBSTITUTED ANILINE|
    FR2521132B1|1982-02-05|1984-03-16|Rhone Poulenc Agrochimie|
    GB2118542B|1982-02-18|1985-12-04|Mitsui Toatsu Chemicals|Process for preparing of 3,3'-diamino diphenylsulfones|
    FR2532305B1|1982-08-24|1984-12-07|Rhone Poulenc Agrochimie|
    JPH0565250A|1991-01-28|1993-03-19|Ishihara Sangyo Kaisha Ltd|Production of 3,5-difluoroaniline|
    US5089653A|1991-04-04|1992-02-18|Dow Elanco|Process for the selective reduction of the 4-halogen in 2,4-dihaloanilines|
    JPH05220565A|1992-02-13|1993-08-31|Sansha Electric Mfg Co Ltd|Molten metal filling device|
    DE19911865A1|1999-03-17|2000-09-28|Degussa|Process for the catalytic hydrogenation of dinitrotoluene and catalyst|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7729399A|FR2403990B1|1977-09-22|1977-09-22|
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