公开(公告)号：DE3203286A1

公开(公告)日：1982-12-09

申请号：DE3203286

申请日：1982-02-01

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TAKEHIRA KATSUOMI ,  ISHIKAWA TOSHIO ,  HAYAKAWA TAKASHI ,  IMAMURA JUICHI

IPC: C07C45/34 ,  C07C49/403

Abstract: The invention provides an effective process for the preparation of cyclohexanone by liquid-phase oxidation of cyclohexene in the presence of a catalyst system. The degree of conversion of cyclohexene and the yield of cyclohexanone are unexpectedly increased if the reaction mixture brought into contact with oxygen or air contains a limited amount of an aliphatic alcohol having 2 to 10 carbon atoms in the molecule, such as, for example, ethyl alcohol, and the catalyst system is composed of a palladium compound, for example PdCl2, and at least one co-catalyst component in the form of a copper compound or an iron compound such as CuCl2 or FeCl3. The benzene or cyclohexane added to the reaction mixture was found to have no adverse effects or even gave improved results in the reaction and provide further advantages for the process, in which the starting cyclohexane need not be purified and can be used as prepared by partial hydrogenation of benzene or partial dehydrogenation of cyclohexane.

公开(公告)号：DE2547093A1

公开(公告)日：1976-04-22

申请号：DE2547093

申请日：1975-10-21

Applicant: AGENCY IND SCIENCE TECHN

Inventor： NISHIMURA TSUTOMU ,  ISHIKAWA TOSHIO

IPC: C12P7/22 ,  C07C39/08

公开(公告)号：DE3305000A1

公开(公告)日：1983-10-13

申请号：DE3305000

申请日：1983-02-14

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TAKEHIRA KATSUOMI ,  HAYAKAWA TAKASHI ,  ISHIKAWA TOSHIO

IPC: C07C49/395 ,  B01J23/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/34 ,  C07C67/00

Abstract: To increase the reaction rate, the process for the preparation of cyclopentanone from cyclopentene using molecular oxygen in a liquid phase in the presence of an alcohol, utilises a composite catalyst which contains 1) a palladium compound and 2) a copper compound and/or an iron compound.

公开(公告)号：DE2449883A1

公开(公告)日：1975-09-25

申请号：DE2449883

申请日：1974-10-21

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ISHIKAWA TOSHIO ,  HAYAKAWA TAKASHI ,  NISHIMURA TSUTOMU ,  ARAKI MICHIO ,  TAKEHIRA KATSUOMI

IPC: B01J23/00 ,  B01J23/28 ,  C07B61/00 ,  C07C1/00 ,  C07C5/48 ,  C07C11/12 ,  C07C67/00 ,  C07C5/36

Abstract: A process for the production of conjugated diolefins having 4-6 carbon atoms from the corresponding monoolefins according to the oxidative dehydrogenation process wherein oxides of molybdenum, arsenic and an alkaline earth metal are used as catalyst. The use of this catalyst enables the production of conjugated diolefins in a high yield.