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    CATALYST FOR DECOMPOSING COMPOUND CONTAINING FLUORINE AND METHOD FOR TREATING COMPOUND CONTAINING FLUORINE BY DECOMPOSITION
    32.
    发明专利
    CATALYST FOR DECOMPOSING COMPOUND CONTAINING FLUORINE AND METHOD FOR TREATING COMPOUND CONTAINING FLUORINE BY DECOMPOSITION 失效

    公开(公告)号：JP2000210560A

    公开(公告)日：2000-08-02

    申请号：JP1513299

    申请日：1999-01-25

    Applicant: UBE INDUSTRIES

    Inventor： SUGIMOTO TSUNEMI ,  YADA HIROHIDE ,  FUKUDA YASUNORI ,  MATSUZAKI TOKUO

    IPC: B01D53/86 ,  B01J21/12

    Abstract: PROBLEM TO BE SOLVED: To enable a high decomposition performance to be maintained for a long time under practical reaction conditions by forming a catalyst for decomposing a gaseous compound containing fluorine from a perfluorocompound and/or a chlorofluorocarbon compound by adding a specific ratio of silicon dioxide to 100 γ-alumina. SOLUTION: The catalyst for decomposing a gaseous compound containing fluorine from a perfluorocompound and/or a chlorofluorocarbon compound is formed by adding 1-10 pts.wt. silicone dioxide to 100 pts.wt. γ-alumina. When this catalyst is used, the catalyst obtained by adding 1-10 pts.wt. silicon dioxide to 100 pts.wt. γ-alumina heated at 300-1,000 deg.C is brought into contact with a compound containing fluorine. Thus it is possible to maintain the high decomposition performance originally possessed by the γ-alumina to the compound containing fluorine for a long time by controlling the transition of the γ phase to the α phase which occurs in the alumina following a chemical reaction. Especially it is desirable to use the γ-alumina having 100 ppm or less Na content in terms of a metal.

    PRODUCTION OF DIARYL CARBONATE
    34.
    发明专利
    PRODUCTION OF DIARYL CARBONATE 失效

    公开(公告)号：JPH09255628A

    公开(公告)日：1997-09-30

    申请号：JP7025496

    申请日：1996-03-26

    Applicant: UBE INDUSTRIES

    Inventor： YAMAMOTO YOSHIFUMI ,  SUGIMOTO TSUNEMI ,  KURATO TOSHIO

    IPC: B01J23/02 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

    Abstract: PROBLEM TO BE SOLVED: To readily produce a diaryl carbonate useful as a raw material for producing a polycarbonate at a sufficient rate of reaction by using a diaryl oxalate as a raw material with out using strongly toxic phosgene. SOLUTION: A diaryl oxalate is heated in the presence of an oxide of an alkaline earth metal in the vapor phase in a reactor to carry out the decarbonylating reaction. For example, diphenyl oxalate is cited as the diaryl oxalate and an oxide of magnesium, calcium, etc., is preferred as the oxide of the alkaline earth metal. The oxide may be supported on a catalyst carrier such as alumina, silica or active carbon for use. The decarbonylating reaction is preferably carried out under conditions of 200-600 deg.C, preferably about 300-500 deg.C and 10-10,000hr , preferably about 50-5,000hr space velocity by feeding a raw material gas containing an inert gas such as N2 gas to the reactor.

    PRODUCTION OF CYCLOALKYL CARBOXYLATE
    38.
    发明专利
    PRODUCTION OF CYCLOALKYL CARBOXYLATE 失效

    公开(公告)号：JPH11171830A

    公开(公告)日：1999-06-29

    申请号：JP33849497

    申请日：1997-12-09

    Applicant: UBE INDUSTRIES

    Inventor： SUGIMOTO TSUNEMI ,  FUKUDA YASUNORI ,  MATSUZAKI TOKUO

    IPC: B01J27/188 ,  C07B41/12 ,  C07B61/00 ,  C07C67/04 ,  C07C69/06

    Abstract: PROBLEM TO BE SOLVED: To provide a method for easily separating a catalyst from a reaction mixture and enabling production of the objective compound in high yield in an industrially advantageous way, by adding a carboxylic acid to a cycloolefln in a two-liquid heterogeneous system consisting of a reaction mixture liquid phase and a heteropoly acid catalyst liquid phase. SOLUTION: This method comprises carrying out reaction in a two-liquid heterogeneous system consisting of a reaction mixture liquid phase and a heteropoly acid catalyst liquid phase, when a carboxylic acid is added to a cycloolefin. Preferably, this addition reaction is conducted at 60-150 deg.C and 1-20 kg/cm . To make the catalytic phase a liquid one, it is preferable that the heteropoly acid is previously treated under heating at 200-380 deg.C for 0.5-5 h in air or in, an inert gas atmosphere. The cycloolefin is preferably cyclooctene or cyclododecene. The carboxylic acid is, for example, acetic acid or propionic acid. It is preferable that the molar ratio of the carboxylic acid to cyclododecene is 5-20.

    FLUORINE-CONTAINING COMPOUND-DECOMPOSING CATALYST AND FLUORINE-CONTAINING COMPOUND-DECOMPOSING METHOD
    39.
    发明专利
    FLUORINE-CONTAINING COMPOUND-DECOMPOSING CATALYST AND FLUORINE-CONTAINING COMPOUND-DECOMPOSING METHOD 失效

    公开(公告)号：JPH11165071A

    公开(公告)日：1999-06-22

    申请号：JP33149297

    申请日：1997-12-02

    Applicant: UBE INDUSTRIES

    Inventor： ATOKUCHI TAKASHI ,  YADA HIROHIDE ,  SUGIMOTO TSUNEMI

    IPC: B01J21/02 ,  B01J27/053 ,  B01J27/16 ,  C07B35/06

    Abstract: PROBLEM TO BE SOLVED: To continuously decompose a fluorine-containing compound containing also perfluoro-compound, which is difficult to decompose, by carrying a metal selected from group VIA, group VIII and group IIIB and an inorganic acid selected from sulfuric acid, phosphoric acid and boric acid on alumina. SOLUTION: The metal carried on the alumina is at least one or more kinds selected from group VIA, group VIII and group IIIB and Cr, Fe, Co, Ni, Pd and Pt, which are the transition metal elements, and B and Ga, which are the typical metal elements, among them produces good result. A preferable result is attained by controlling the quantity of the metal to be carried on the alumina carrier to 0.01-20 pts.wt. expressed in terms of metal per 100 pts.wt. carrier. The inorganic acid is limited to sulfuric acid, phosphoric acid and boric acid from the view point of the reaction condition and sulfuric acid having strong acidity and low splash property is most preferably used among them. The suitable result is attained by controlling the content of the inorganic acid in the catalyst to 0.1-20 pts.wt. per 100 pts.wt. alumina.

    DECOMPOSING METHOD OF FLUORINE-CONTAINING COMPOUND
    40.
    发明专利
    DECOMPOSING METHOD OF FLUORINE-CONTAINING COMPOUND 失效

    公开(公告)号：JPH10286439A

    公开(公告)日：1998-10-27

    申请号：JP9715497

    申请日：1997-04-15

    Applicant: UBE INDUSTRIES

    Inventor： ATOKUCHI TAKASHI ,  YADA HIROHIDE ,  SUGIMOTO TSUNEMI ,  MATSUZAKI TOKUO

    IPC: A62D3/00 ,  B01D53/86 ,  B01J21/06 ,  B01J23/08 ,  B01J23/22 ,  B01J23/26 ,  B01J23/28 ,  B01J23/30 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/72 ,  B01J23/74

    Abstract: PROBLEM TO BE SOLVED: To enable continuous decomposition of a perfluoro compd. by bringing a gaseous fluorine-contg. compd. into contact with molecular oxygen and water in the presence of catalyst prepared by depositing at least one kind of metal selected from among 4A, 5A, 6A, 7A, 8 and 1B groups and 3B groups on a carrier. SOLUTION: When a gaseous fluorine-contg. compd. (such as perfluoro compds. and fluorinated hydrocarbons) is decomposed, the fluorine-contg. compd. is brought into contact with molecular oxygen and water in the presence of a catalyst which is prepared by depositing at least one kind of metal selected from among 4A, 5A, 6A, 7A, 8, 1B and 3B groups on a carrier. As for the carrier, for example, alumina such as γ-alumina is preferably used. Its shape is not limited but properly selected according to the reactor and the reaction method. The amt. of the metal deposited is preferably 0.01 to 20 wt.% calculated as a metal to the carrier. As for the molecular oxygen, air is preferably used.

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