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    PROCESS FOR APPLYING A CATALYTICALLY ACTIVE COATING ON CATALYST SUPPORTS
    6.
    发明专利
    PROCESS FOR APPLYING A CATALYTICALLY ACTIVE COATING ON CATALYST SUPPORTS 未知

    公开(公告)号：CA1083122A

    公开(公告)日：1980-08-05

    申请号：CA257193

    申请日：1976-07-16

    Applicant: DEGUSSA

    Inventor： LAKATOS EDUARD ,  KOBERSTEIN EDGAR ,  HENSEL JOERG ,  BOZON ALFRED

    IPC: B01J23/40 ,  B01J23/42 ,  B01J23/46 ,  B01J35/08 ,  B01J37/02 ,  B01J33/00

    Abstract: The present invention provides a process for applying a coating or film of catalytically active elements by means of solution on the external surface of a porous catalyst support i.e., a catalyst support having a large surface area, characterized in that the catalyst support is impregnated with a solution of at least one of various complexing agents, precipitants and reducing agents in an organic liquid, without exceeding the saturation of the catalyst supports, the solution of catalytically active elements is then added, the liquid is removed by heating and when required, the catalyst support thus treated is subjected to an aftertreatment which is treatment with a reducing agent or tempering at elevated temperature. The process provides a catalyst of uniform quality without a high loss of active components.

    8.
    发明专利
    未知

    公开(公告)号：IT1129877B

    公开(公告)日：1986-06-11

    申请号：IT6877080

    申请日：1980-11-19

    Applicant: DEGUSSA

    Inventor： BOZON ALFRED ,  KOBERSTEIN EDGAR ,  PLETKA HANS DIETER ,  VOLKER HERBERT

    IPC: B23K11/00 ,  B23K9/20 ,  B23K11/10 ,  F01N3/10 ,  F01N3/28

    Abstract: The invention relates to a method for the manufacture of a metallic matrix which is "monolithic", is coated with a catalysis promoting metal oxide and is disposed in a metal casing, in which the matrix is composed of alternately disposed plain and corrugated or folded metal sheets or plates, in which these sheets are stacked in a pile or are wound into a spiral. The method comprises a special resistance welding on the end faces of the matrix and arc welding of the side face of the matrix to the side of the casing, on which the metal oxide is applied.

    Method of brazing a wound body to a casing
    9.
    发明专利
    Method of brazing a wound body to a casing 未知

    公开(公告)号：DE3116967A1

    公开(公告)日：1982-11-18

    申请号：DE3116967

    申请日：1981-04-29

    Applicant: DEGUSSA

    Inventor： KOBERSTEIN EDGAR DIPL ING DR ,  PLETKA HANS-DIETER DR ,  BOZON ALFRED ,  VOELKER HERBERT ING GRAD

    IPC: B23K1/00

    Abstract: The subject matter of the invention is a method of brazing a wound metal backing for car-exhaust catalytic converters with a metal casing enclosing it, the casing having a higher coefficient of thermal expansion than the wound body. To this end, a metal strip with the width corresponding to the length of the wound body and with the length corresponding to the circumference of the wound body, less a distance corresponding to the expansion of the casing under brazing conditions, is bent into a casing shape, then brazing agent is applied to the points of casing and wound body to be joined, the casing, after the wound body is pushed in, is pressed against the wound body by means of clamping jaws enclosing it, and the arrangement is thus brazed in the furnace.

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