PRODUCTION OF HEAT RESISTANT ALUMINA COMPLEX OXIDE

    公开(公告)号:JPS63242917A

    公开(公告)日:1988-10-07

    申请号:JP7571987

    申请日:1987-03-27

    Abstract: PURPOSE:To obtain heat resistant alumina complex oxide, by subjecting a mixed solution of Al alkoxide with one or more kind of alkoxide of Sr, Ba, La and Zr to gelation and heat treatment in the presence of a prescribed oxygen-containing organic compound. CONSTITUTION:An oxygen-containing organic compound having a hydroxyl group linked to tertiary carbon as a functional group is prepared. In the presence of the compound, an Al alkoxide is blended with one or more kind of alkoxide of Sr, Ba, La and Zr to afford a homogeneous solution, which is then is hydrolyzed and subjected to gelation. Then the resultant gel is dried and heat-treated at >=1,000 deg.C.

    METHOD FOR PARTIALLY HYDROGENATING NUCLEUS OF AROMATIC HYDROCARBON

    公开(公告)号:JPS62255438A

    公开(公告)日:1987-11-07

    申请号:JP9736486

    申请日:1986-04-26

    Abstract: PURPOSE:In partially hydrogenating an aromatic hydrocarbon by reacting the aromatic hydrocarbon with a H2 gas in the presence of water and a hydrogenating catalyst, the catalyst obtained by dispersing Ru and Cu as main components into a solid derived from metallic hydroxide colloid is used. CONSTITUTION:In partially hydrogenating nucleus of an anomatic hydrocarbon in the presence of water, a catalyst obtained by dispersing Ru and Cu as main components into a solid derived from metallic hydroxide colloid is used. The catalyst is prepared by blending a solution of the metallic hydroxide colloid (e.g. silicic acid sol, alumina sol or titania sol) with a solution of a Tu salt and a Cu salt in an organic solvent, subjecting the blend to spray drying and heat-treating the spray dried blend at 200-800 deg.C in a H2 atmosphere. A polar solvent (e.g. polyhydric alcohol or acetylacetone) having multiple coordination ability or crosslinking coordination ability is preferable as the organic solvent. The amount of water used is 0.01-20pts.wt based on 1pts.wt. raw material.

    CATALYST FOR PURIFYING EXHAUST GAS
    56.
    发明专利

    公开(公告)号:JPH06315633A

    公开(公告)日:1994-11-15

    申请号:JP4953792

    申请日:1992-03-06

    Abstract: PURPOSE:To provide a catalyst for purifying exhaust gas prevented from the sintering of noble metal, which is catalytic metal in high temp. atmosphere, improved in durability and excellent in purifying ability by developing an alumina keeping high specific surface area and small in heat deterioration even after high temp. endurance. CONSTITUTION:The catalyst for purifying exhaust gas is provided with a coating layer containing at least one kind of the noble metal selected from a group composed of platinum, palladium and rhodium on a monolithic carrier, at least one layer of the coating layers contains at least one kind of the catalytic metal, an active alumina and cerium and the active alumina is obtained by dissolving a soluble organic aluminum compound in an organic solvent, heating and after stirring, adding an organic cerium salt solution, hydrolyzing, and drying and firing the obtained gel.

    PRODUCTION OF ROSIN ALCOHOL
    57.
    发明专利

    公开(公告)号:JPH05156209A

    公开(公告)日:1993-06-22

    申请号:JP32608491

    申请日:1991-12-10

    Abstract: PURPOSE:To directly produce a rosin alcohol useful as a rubber additive, a plasticizer for synthetic resin, etc., in high yield without passing through a rosin ester as an intermediate by hydrogenating a rosin in the presence of a specific catalyst. CONSTITUTION:A rosin alcohol is produced in high yield by hydrogenating a rosin at 150-400 deg.C under a pressure of 10-300kg/cm in the presence of 1-50 pts.wt. (based on 1 pt.wt. of the rosin) of a catalyst produced by supporting 0.01-20wt.% (in terms of metal) of ruthenium and 0.1-20mol (based on 1mol of ruthenium) of tin on a carrier (preferably alumina), preferably a catalyst containing ruthenium and tin dispersed in a gel derived from a hydrolyzed product of a metal alkoxide and obtained by dissolving a carrier metal alkoxide, a ruthenium compound and a tin compound in an organic solvent, adding water to the solution, heating the mixture under stirring at 60-100 deg.C under normal pressure or reduced pressure and drying by heating under reduced pressure.

    PRODUCTION OF OMEGA-HYDROXY FATTY ACID ESTER

    公开(公告)号:JPH0499753A

    公开(公告)日:1992-03-31

    申请号:JP21593090

    申请日:1990-08-17

    Abstract: PURPOSE:To use inexpensive raw materials and to efficiently produce the title compound by a relative simple process at low cost by reducing a long-chain diacid monoester with hydrogen in the presence of a ruthenium-based and/or a rhenium-based catalyst. CONSTITUTION:A long-chain diacid monoester (e.g. pentadecane diacid monomethyl ester) shown by formula I (R is alkyl; n is 8-16 integer) is brought into contact with hydrogen in the presence of a ruthenium-based catalyst (especially preferably one containing ruthenium and tin) and/ or a rhenium-based catalyst (especially preferably one containing rhenium and tin) to give an omega- hydroxy fatty acid ester (e.g. omega-hydroxypentadecanoic acid methyl ester) shown by formula II. Advantageously the compound shown by formula I is readily produced. The omega-hydroxy fatty acid ester is useful as a raw material for drugs, a synthetic raw material for macrocyclic lactones and a raw material for polymers, etc.

    PRODUCTION OF 9-OCTADECEN-1-OL
    59.
    发明专利

    公开(公告)号:JPH0482852A

    公开(公告)日:1992-03-16

    申请号:JP19547290

    申请日:1990-07-24

    Abstract: PURPOSE:To easily obtain the subject compound useful as a raw material for surfactant, etc., under low hydrogen pressure at a low cost by hydrogenating oleic acid in the presence of a ruthenium/tin solid catalyst exhibiting high catalytic activity and stability and produced by a specific reproducible process. CONSTITUTION:The objective compound can be produced in high selectivity by hydrogenating oleic acid with H2 under a hydrogen pressure of 1-200kg/cm at 50-400 deg.C using a ruthenium/tin solid catalyst prepared by using a ruthenium compound and a tin compound as essential elements, adding aluminum or silicon compound to the elements, mixing the components in an organic solvent as necessary under heating to obtain a uniform solution, adding water to the solution, stirring the mixture as necessary under heating to effect the hydrolysis of the components, drying the gel produced by using the above procedures as essential procedures and, as necessary, subjecting the dried get to calcination, reduction, etc. The above compound of aluminum or silicon is preferably alkoxide.

    LIGHT-TRANSMITTABLE MAGNETIC YTTRIUM IRON GARNET FILM AND ITS PRODUCTION

    公开(公告)号:JPH0442896A

    公开(公告)日:1992-02-13

    申请号:JP14645590

    申请日:1990-06-04

    Abstract: PURPOSE:To easily obtain the title film at low cost by coating a substrate with an organic solvent solution of a soluble organic iron yttrium compound followed by drying and then annealing treatment to effect the thermal decomposition of said compound. CONSTITUTION:A substrate is coated with an organic solvent solution of a soluble organic iron yttrium compound followed by drying, and then annealing treatment to effect the thermal decomposition of said compound. This compound is, in general, a product from the reaction between (A) an oxygen-contg. organic compound such as polyol, polycarboxylic acid or oxycarboxylic acid,(B) an iron compound and (C) a yttrium compound [pref. a reaction product from a >=10C 1,2-diol or oxycarboxylic acid an iron compound and a yttrium compound].

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