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    62.
    发明专利
    未知

    公开(公告)号：BR9106548A

    公开(公告)日：1993-06-01

    申请号：BR9106548

    申请日：1991-06-12

    Applicant: CATALYTICA INC

    Inventor： BETTA RALPH D DALLA ,  REED DANIEL L ,  SCHUBERT PRISCILLA

    IPC: F02B1/04 ,  G01N25/30 ,  G01N27/14 ,  G01N33/00 ,  G01N25/20 ,  G01N27/00

    Abstract: This invention is a self-contained NOx sensor assembly. It may be used to detect NOx levels in a flowing gas stream such as might be found in an exhaust gas from a combustion process and to produce a measurable electrical output related to the content of NOx measured. The NOx sensor assembly is of a configuration that may be detached from a mounting and replaced. The sensor assembly comprises two sensor elements one of which is made up of a catalyst on a temperature measuring device. The other is a gas stream ambient temperature measuring device. The catalyst is selected and configured so that it selectively reduces NOx and the resulting heat of the reaction raises the temperature of the allied temperature measuring device. The sensor assembly also contains a NOx reductant source. The sensor assembly may be placed in a moving vehicle for measuring NOx levels in its exhaust gas.

    63.
    发明专利
    未知

    公开(公告)号：BR9106139A

    公开(公告)日：1993-03-09

    申请号：BR9106139

    申请日：1991-03-05

    Applicant: CATALYTICA INC

    Inventor： GRATE JOHN H ,  HAMM DAVID R ,  KLINGMAN KENNETH A ,  SAXTON ROBERT J ,  DOWNEY SHANNAN L

    IPC: B01J31/16 ,  B01J23/44 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C29/141 ,  C07C45/28 ,  C07C45/30 ,  C07C45/34 ,  C07C47/06 ,  C07C49/10 ,  C07C45/35

    Abstract: PCT No. PCT/US91/01508 Sec. 371 Date Sep. 4, 1992 Sec. 102(e) Date May 24, 1991 PCT Filed Mar. 5, 1991 PCT Pub. No. WO91/13851 PCT Pub. Date Sep. 19, 1991.The present invention provides aqueous catalyst solutions useful for oxidation of olefins to carbonyl products, comprising a palladium catalyst, a polyoxoacid or polyoxoanion oxidant comprising vanadium, and chloride ions. It also provides processes for oxidation of olefins to carbonyl products, comprising contacting olefin with the aqueous catalyst solutions of the present invention. It also provides processes for oxidation of olefins to carbonyl products by dioxygen, comprising contacting olefin with the aqueous catalyst solutions of the present invention, and further comprising contacting dioxygen with the aqueous catalyst solutions. The present invention also provides a process for the oxidation of palladium(0) to palladium(II) comprising contacting the palladium(0) with an aqueous solution comprising chloride ions and a polyoxoacid or polyoxoanion oxidant comprising vanadium.

    64.
    发明专利
    未知

    公开(公告)号：BR9106112A

    公开(公告)日：1993-03-09

    申请号：BR9106112

    申请日：1991-03-05

    Applicant: CATALYTICA INC

    Inventor： GRATE JOHN H ,  HAMM DAVID R ,  SAXTON ROBERT J

    IPC: B01J31/16 ,  B01J23/44 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C29/141 ,  C07C45/28 ,  C07C45/30 ,  C07C45/34 ,  C07C47/06 ,  C07C49/10

    Abstract: PCT No. PCT/US91/01508 Sec. 371 Date Sep. 4, 1992 Sec. 102(e) Date May 24, 1991 PCT Filed Mar. 5, 1991 PCT Pub. No. WO91/13851 PCT Pub. Date Sep. 19, 1991.The present invention provides aqueous catalyst solutions useful for oxidation of olefins to carbonyl products, comprising a palladium catalyst, a polyoxoacid or polyoxoanion oxidant comprising vanadium, and chloride ions. It also provides processes for oxidation of olefins to carbonyl products, comprising contacting olefin with the aqueous catalyst solutions of the present invention. It also provides processes for oxidation of olefins to carbonyl products by dioxygen, comprising contacting olefin with the aqueous catalyst solutions of the present invention, and further comprising contacting dioxygen with the aqueous catalyst solutions. The present invention also provides a process for the oxidation of palladium(0) to palladium(II) comprising contacting the palladium(0) with an aqueous solution comprising chloride ions and a polyoxoacid or polyoxoanion oxidant comprising vanadium.

    PALLADIUM PARTIAL COMBUSTION CATALYSTS AND A PROCESS FOR USING THEM
    69.
    发明专利
    PALLADIUM PARTIAL COMBUSTION CATALYSTS AND A PROCESS FOR USING THEM 未知

    公开(公告)号：CA2096949A1

    公开(公告)日：1992-05-27

    申请号：CA2096949

    申请日：1991-11-26

    Applicant: CATALYTICA INC ,  TANAKA PRECIOUS METAL IND

    Inventor： DALLA BETTA RALPH ,  RIBEIRO FABIO ,  SHOJI TORU ,  TSURUMI KAZUNORI ,  EZAWA NOBUYASU ,  NICKOLAS SARENTO

    IPC: B01J23/44 ,  B01J23/46 ,  B01J23/48 ,  F23D14/18

    Abstract: 2096949 9209848 PCTABS00013 This invention is a catalyst comprising palladium on a support (102) and a partial combustion process in which the fuel is partially combusted using that catalyst. The palladium catalyst (106) may also comprise palladium mixed with metals selected from Group VIII or IB, may be graded (Fig. 1b) such as to have higher activity in the forward edge (112) of the catalyst, or may be placed on a support comprising zirconia. The choice of catalysts (106) and supports (102, 110) specified each solves a variety of problems dealing with the long term stability of the palladium as a partial combustion catalyst. The catalyst structure is stable in operation, has a comparatively low operating temperature, has a low temperature at which oxidation begins, and yet is not susceptible to temperature "runaway". The combustion gas produced by the catalytic process typically is at a temperature below the autocombustive temperature and may be used at that temperature or it may be fed to other combustion stages for further use in a gas turbine, furnace, boiler, or the like.

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