CATALYST FOR MANUFACTURING CHLORINATED HYDROCARBON

    公开(公告)号:JPH02187150A

    公开(公告)日:1990-07-23

    申请号:JP29778189

    申请日:1989-11-17

    Abstract: PURPOSE: To accelerate selective chlorination reaction and oxychlorination reaction by depositing a catalyst material on a monolithic carrier which has lots of passages arranged parallel to the axial line in the longitudinal axial direction with both ends open and which has the length corresponding to the diameter of the passages. CONSTITUTION: This catalyst for chlorination of hydrocarbons is produced by carrying a catalyst material directly or through a coating layer which accelerates the catalytic effect on a monolithic carrier. The carrier has passages arranged parallel to the axial line in the longitudinal direction with both ends open and has the length at least corresponding to the diameter of the passages. By filling a tubular reactor with the catalyst above described, chlorinated hydrocarbons can be produced by the selective chlorination and/or oxychlorination reaction. In this method, the catalyst is preferably arranged in plural blocks succeeding to each other in the tube of the tubular reactor.

    FORMED PRODUCT BASED ON SILICON DIOXIDE, PRODUCTION AND USE THEREOF, SUPPORTED CATALYST FOR PRODUCTION OF VINYL ACETATE MONOMER, PRODUCTION AND USE OF THE SUPPORTED CATALYST

    公开(公告)号:JP2000086335A

    公开(公告)日:2000-03-28

    申请号:JP18081099

    申请日:1999-06-25

    Applicant: DEGUSSA

    Abstract: PROBLEM TO BE SOLVED: To minimize the pressure drop, give the small bulk density and a relatively large outer surface area and permit improved mass transfer and heat transfer by forming stays or spokes extending from the inner wall of the hollow cylinder toward the center for strengthening the inside or forming a plurality of passageways. SOLUTION: The molded body of a wheel shape has an outer diameter d1 of 1-25 mm, the ratio of height to the outer diameter d1 of 0.2-5, the wall thickness [(d1-d2)×0.5] of 0.05-0.5×d1, the thickness of the stay or spoke d3 of 0.05-0.3×d1 and the number of the stays or spokes or the passageways of at least 3. The molded body is formed by kneading the base of silicon dioxide produced by thermal decomposition, forming the silicon dioxide by means of a single or twine screw extruder and strand-pressing formed silicon dioxide into a hollow cylinder in a wheel shape. Then, the strand-pressed produce is cut in a desired thickness and they are heat-treated at 400-1,200 deg.C for 30 minutes-10 hours. The molded body is allowed to carry a catalytically active component such as Pd/alkali/Au system or the like to give the objective supported catalyst that attains the high space time yield and the high selectivity in the production of vinyl acetate.

    CATALYST SUPPORT
    3.
    发明申请
    CATALYST SUPPORT 审中-公开
    催化剂支持

    公开(公告)号:WO0234390A3

    公开(公告)日:2003-05-22

    申请号:PCT/EP0110943

    申请日:2001-09-21

    Applicant: DEGUSSA

    Abstract: A catalyst support consisting mainly of synthetic silica, with 0.5 - 10 parts by weight of one or more oxides or phosphates of the elements of group IIA, IIIB, IVB, VB, VIB, VIIB, VIII, IB, IIB, IIIA, IVA and the lanthanides characterised in that the support preparation method comprises mixing particulate synthetic silica with particulate oxides or phospates of the elements of Groups IIA, IIIB, IVB, VB, VIB, VIIB, VIII, IB, IIB, IIIA, IVA and the lanthanides, or with precursors thereof, a forming step and calcination. The catalyst support is used together with phosphoric acid in the production of alcohols from olefins by hydration.

    Abstract translation: 主要由合成二氧化硅组成的催化剂载体,其具有0.5-10重量份的IIA,IIIB,IVB,VB,VIB,VIIB,VIII,IB,IIB,IIIA,IVA族元素的一种或多种氧化物或磷酸盐,以及 镧系元素的特征在于载体制备方法包括将颗粒状合成二氧化硅与IIA,IIIB,IVB,VB,VIB,VIIB,VIII,IB,IIB,IIIA,IVA族和镧系元素的元素的颗粒氧化物或磷酸盐混合,或 其前体,成型步骤和煅烧。 催化剂载体与磷酸一起用于通过水合由烯烃生产醇。

    9.
    发明专利
    未知

    公开(公告)号:AT215845T

    公开(公告)日:2002-04-15

    申请号:AT99112026

    申请日:1999-06-22

    Applicant: DEGUSSA

    Abstract: Moldings based on silica having a hollow cylindrical configuration with internal reinforcing stays or spokes leading from an inner wall of a hollow cylinder to the center of the molding or in the form of miniliths having passageway channels therethrough, are produced by homogenizing silica with methyl hydroxyethyl cellulose, wax and/or polyethylene glycol. Water and optionally aqueous alkaline ammonia solution are added, and the mixture is subjected to kneading and forming, extruding, optionally cutting the extrudate to the desired length by means of a cutting device, drying at a temperature from 20 to 150° C., and annealing for a period from 30 minutes to 10 hours at a temperature of 400 to 1200° C. The moldings can be used as catalyst supports for the production of unsaturated esters from olefins, organic acids and oxygen in the gas phase and and can be used in particular for the production of vinyl acetate monomer.

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