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    PRODUCTION OF DIALKYL CARBONATE
    12.
    发明专利
    PRODUCTION OF DIALKYL CARBONATE 失效

    公开(公告)号：JPH05201930A

    公开(公告)日：1993-08-10

    申请号：JP1120192

    申请日：1992-01-24

    Applicant: DAICEL CHEM

    Inventor： KOMORITANI MASAHIRO ,  MATSUDA HIROKAZU ,  SUGIMOTO MASAHIKO

    IPC: C07C68/00 ,  C07C68/08 ,  C07C69/96

    Abstract: PURPOSE:To produce a dialkyl carbonate in high conversion and selectivity by reacting alcohols with carbon monoxide and oxygen in the presence of an oxidative carbonylation catalyst and removing water from a reactor using pervaporation membrane. CONSTITUTION:Dimethyl carbonate is produced by (1) using a pervaporation membrane as a method for reacting alcohols with carbon monoxide and oxygen in the presence of an oxidative carbonylation catalyst and then selectively removing water which is produced simultaneously with a dialkyl carbonate or by (2) separating dimethyl carbonate from water using the pervaporation membrane and then continuously removing water produced during reaction, in a reaction system for continuously feeding alcohols, carbon monoxide and oxygen to the reactor and continuously pulling out the produced dimethyl carbonate and water from the reactor. The producing method is high in, both of conversion and selectivity.

    CATALYST FOR ESTER EXCHANGE REACTION AND MANUFACTURE OF AROMATIC CARBONIC ACID DIESTER USING CATALYST THE SAME
    13.
    发明专利
    CATALYST FOR ESTER EXCHANGE REACTION AND MANUFACTURE OF AROMATIC CARBONIC ACID DIESTER USING CATALYST THE SAME 失效

    公开(公告)号：JPH05123579A

    公开(公告)日：1993-05-21

    申请号：JP29303591

    申请日：1991-11-08

    Applicant: DAICEL CHEM

    Inventor： KOMORITANI MASAHIRO ,  HORIGUCHI AKIRA

    IPC: B01J31/12 ,  C07B61/00 ,  C07C69/96

    Abstract: PURPOSE:To provide a catalyst of ester exchange reaction which is useful for manufacturing an aromatic carbonic acid diester by ester exchange reaction of a carbonic acid diester and a phenolic compound, and manufacturing method of the aromatic carbonic acid diester using the catalyst. CONSTITUTION:A catalyst for ester exchange reaction prepared from at least a dialkyltin is used. Ester exchange reaction of an alkylcarbonic acid diester and a phenolic compound is carried out in the presence of the catalyst for ester exchange reaction to obtain an aromatic carbonic acid diester. Consequently, the catalyst for ester exchange reaction in the mentioned reaction has high catalytic activity and the aromatic carbonic acid dimethyl ester is obtained efficiently. Also, a side reaction can be controlled.

    PRODUCTION OF CARBONIC ACID AND CATALYTIC SYSTEM FOR CARBOLNYLATING REACTION
    14.
    发明专利
    PRODUCTION OF CARBONIC ACID AND CATALYTIC SYSTEM FOR CARBOLNYLATING REACTION 失效

    公开(公告)号：JPH08277244A

    公开(公告)日：1996-10-22

    申请号：JP10682695

    申请日：1995-04-05

    Applicant: DAICEL CHEM

    Inventor： ONO MITSURU ,  MORIMOTO YOSHIAKI ,  KOMORITANI MASAHIRO

    IPC: B01J31/28 ,  C07B61/00 ,  C07C51/12 ,  C07C53/08

    Abstract: PURPOSE: To raise productivity of a carboxylic acid such as acetic acid, etc., even in a reaction system haying a low water content and iodide ion concentration. CONSTITUTION: At least one component of an alcohol (methanol, etc.), an organic acid alkyl ester (methyl acetate, etc.) and a dialkyl ether (dimethyl ether, etc.) is reacted with carbon monoxide in the presence of water by constituting a catalytic system composed of a rhodium catalyst, an alkyl halide (methyl iodide) and a compound of an element of the group 3A of the 4 period to the 6 period of the periodic table to produce a carboxylic acid (acetic acid, etc.). The compound of the element of the 3A group includes an oxide and an acetate of scandium, yttrium and lanthanide. The catalytic system may contain an alkali metal iodide such as lithium iodine, etc. The carboxylic acid or its corresponding acid anhydride can be efficiently produced by using the catalytic system even if the water concentration of the reaction system is

    PRODUCTION OF ACETIC ACID AND/OR ACETIC ANHYDRIDE
    15.
    发明专利
    PRODUCTION OF ACETIC ACID AND/OR ACETIC ANHYDRIDE 失效

    公开(公告)号：JPH0820555A

    公开(公告)日：1996-01-23

    申请号：JP15440194

    申请日：1994-07-06

    Applicant: DAICEL CHEM

    Inventor： KOMORITANI MASAHIRO ,  MORIMOTO YOSHIAKI

    IPC: B01J31/30 ,  C07B61/00 ,  C07C51/12 ,  C07C51/47 ,  C07C51/54 ,  C07C51/56 ,  C07C51/573 ,  C07C53/08 ,  C07C53/12

    Abstract: PURPOSE:To provide a new process for manufacturing high purity acetic acid and/or acetic anhydride having reduced amount of an organic iodide and a carbonyl impurity in acetic acid and/or acetic anhydride produced by the carbonylation process in the presence of a rhodium catalyst. CONSTITUTION:Acetic acid and/or acetic anhydride is produced by continuously reacting at least one component selected from methanol, methyl acetate and dimethyl ether with carbon monoxide in the presence of a rhodium catalyst, an iodide salt and methyl iodide. In this process, the acetoaldehyde content in the reaction liquid is controlled

    PRODUCTION OF ACETIC ANHYDRIDE AND ACETIC ACID
    16.
    发明专利
    PRODUCTION OF ACETIC ANHYDRIDE AND ACETIC ACID 失效

    公开(公告)号：JPH06336453A

    公开(公告)日：1994-12-06

    申请号：JP12758793

    申请日：1993-05-28

    Applicant: DAICEL CHEM

    Inventor： MORIMOTO YOSHIAKI ,  KOMORITANI MASAHIRO

    IPC: B01J31/30 ,  C07B61/00 ,  C07C51/083 ,  C07C51/12 ,  C07C51/54 ,  C07C53/08 ,  C07C53/12 ,  C07C67/37 ,  C07C69/14

    Abstract: PURPOSE:To obtain the subject compounds by effecting the reaction of methanol, methyl acetate or dimethyl ether and carbon monoxide or a combination thereof with hydrogen in the presence of a catalyst in a series of facilities. CONSTITUTION:A rhodium compound and methyl iodide are used as major catalysts to effect the reaction of methyl acetate or dimethyl ether and carbon monoxide or a combination thereof with hydrogen in the first reactor to give acetic anhydride. After most of the catalyst are removed from the reaction mixture, at least a part of the acetic anhydride formed in the first reactor is allowed to react with methanol and/or water in the second reactor to form acetic acid and methyl acetate or acetic acid. The methyl acetate included in the reaction mixture from the second reactor is recycled to the first reactor as a feedstock whereby the production ratio of acetic acid to acetic anhydride can be freely changed. Acetic acid is useful as a starting substance for acetate, acetic anhydride, vinyl acetate and production of terephthalic acid. Acetic anhydride is useful as a starting substance for cellulose acetate, medicines, perfumes, dyes and the like.

    PREPARATION OF SOLID CATALYST AND PRODUCTION OF CARBONIC ACID ESTER USING THE SAME
    18.
    发明专利
    PREPARATION OF SOLID CATALYST AND PRODUCTION OF CARBONIC ACID ESTER USING THE SAME 失效

    公开(公告)号：JPH0625080A

    公开(公告)日：1994-02-01

    申请号：JP20046392

    申请日：1992-07-03

    Applicant: DAICEL CHEM

    Inventor： KOMORITANI MASAHIRO ,  MATSUDA HIROKAZU

    IPC: B01J27/122 ,  B01J31/02 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

    Abstract: PURPOSE:To obtain a solid catalyst for production of a carbonic acid ester, having high activity, long catalytic life and high corrosion resistance. CONSTITUTION:Copper (I) halide such as copper (I) chloride or a copper (I) halide and an organic compound capable of coordinating with the copper (I) halide are treated in the presence of carbon monoxide in an organic solvent such as methanol and carried on a support. As the organic compound, a nitrogen-containing heterocyclic compound, an organophosphorus compound, nitrile, etc., is used. As the support, active carbon, etc., is used. The above- mentioned treatment is carried out at ordinary pressure to about 100kg/cm and at a temperature of about 20-200 deg.C. The catalyst component is uniformly carried on the support because the treatment is carried out in the presence of carbon monoxide gas. This catalyst is preferably used for producing a carbonic acid ester such as dimethyl carbonate, etc., by reacting an alcohol with carbon monoxide in the presence of oxygen.

    PRODUCTION OF CARBONIC ACID ESTER
    19.
    发明专利
    PRODUCTION OF CARBONIC ACID ESTER 失效

    公开(公告)号：JPH05125021A

    公开(公告)日：1993-05-21

    申请号：JP29303691

    申请日：1991-11-08

    Applicant: DAICEL CHEM

    Inventor： KOMORITANI MASAHIRO ,  MAEDA YASUSHI ,  HORIGUCHI AKIRA ,  SUGIMOTO MASAHIKO

    IPC: C07C68/06 ,  C07C69/96

    Abstract: PURPOSE:To obtain a carbonic acid ester in high efficiency by carrying out the ester interchange of dimethyl carbonate with a hydroxy compound and distilling out the by-produced methanol by using the dimethyl carbonate raw material as an azeotropic agent. CONSTITUTION:A carbonic acid ester is produced by the ester interchange of dimethyl carbonate with a hydroxy compound (e.g. phenol) in a reactive distillation column 4 in the presence of an ester interchange reaction catalyst (e.g. dibutyltin oxide). In the above process, the methanol produced in the reaction zone at the lower part of the reactive distillation column 4 is mixed with dimethyl carbonate in the reactive distillation zone to form an azeotropic mixture, transferred from the column top through a line 5 and condensed by a condenser 6. The distillate from a line 8 consisting of an azeotropic mixture of dimethyl carbonate, and methanol is separated and purified by a permeating evaporation membrane 9 and the methanol is recovered from the line 10. The dimethyl carbonate is recovered from the line 2 and returned to the reactive distillation column 4 through the line 1. Methanol can be removed in high efficiency by this process to enable the effective progress of the reaction in a short time and the production of a carbonic acid ester at a low cost.

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