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1772 条记录 (耗时 0.036 秒)

    NOVEL SUPPORTED CATALYST SYSTEMS
    45.
    发明公开
    NOVEL SUPPORTED CATALYST SYSTEMS 有权
    新负载的催化剂体系

    公开(公告)号：EP1590085A1

    公开(公告)日：2005-11-02

    申请号：EP04707769.8

    申请日：2004-02-03

    申请人： W.R. GRACE & CO.-CONN.

    发明人： WORMSBECHER, Richard

    IPC分类号： B01J31/00 ,  B01J20/30 ,  C12N11/14

    CPC分类号： B01J31/003 ,  B01J31/0254 ,  B01J31/1633 ,  B01J2219/00605 ,  B01J2219/00612 ,  B01J2219/00626 ,  B01J2219/00637 ,  B01J2219/00641 ,  B01J2219/00644 ,  B01J2220/54 ,  B01J2231/40 ,  B01J2231/4211 ,  B01J2231/4261 ,  C12N11/14 ,  C12P13/222 ,  C12P21/06 ,  G01N30/02 ,  Y02P20/588 ,  Y10S502/523 ,  B01D15/3804

    摘要： The present invention relates to a supported catalyst system. The supported catalyst of the present invention comprises an inorganic support having attached to at least one surface thereof non-acidic, hydrophillic, hydroxyl-containing organic R10 groups having no or substantially no surface charge in solution, and at least one linker capable of binding a catalytic species, e.g. an enzyme or an organometallic molecule, wherein the linker is attached to a catalytic species. The R10 groups preferably are selected from the group consisting of -CH2OH, -CH(OH)2, -CH(OH)CH3, -CH2CH2OH, -CH(OH)2CH3, -CH2CH(OH)2, -CH(OH)CH2(OH) and mixtures thereof. The presence of the R10 groups on the support surface prevents or reduces non-specific binding of the catalytic species with the support surface by minimizing hydrophobic interactions and providing no or substantially no surface charge in the region of the support having catalytic species attached thereto. Simultaneously, the linker binds the catalytic species to the surface of the support in a manner which permits the catalytic species to be freely available for catalytic activity. Methods of catalyzing a reaction using the supported catalyst system of the invention are also disclosed.

    REDUCTION OF GAS PHASE REDUCED NITROGEN SPECIES IN PARTIAL BURN FCC PROCESSES
    47.
    发明公开
    REDUCTION OF GAS PHASE REDUCED NITROGEN SPECIES IN PARTIAL BURN FCC PROCESSES 有权
    还原氮类物质GASPHASENREDUZIERTEM INTEILVERBRENNUNGS FCC工艺的

    公开(公告)号：EP1558367A1

    公开(公告)日：2005-08-03

    申请号：EP03809611.1

    申请日：2003-10-21

    申请人： W.R. Grace & Co.-Conn.

    发明人： YALURIS, George ,  RUDESILL, John, Allen

    IPC分类号： B01D53/86 ,  B01D53/96

    CPC分类号： B01D53/8621 ,  B01D53/96 ,  Y02P30/446

    摘要： Reduced emissions of gas phase reduced nitrogen species in the off gas of an FCC regenerator operated in a partial or incomplete mode of combustion is achieved by contacting the off gas with an oxidative catalyst/additive composition having the ability to reduce gas phase nitrogen species to molecular nitrogen. Fluidizable particles of the oxidative catalyst/additives are circulated throughout the partial or incomplete burn FCC unit along with the FCC catalyst inventory. The flue gas having a reduced content of gas phase reduced nitrogen species and NO x is passed to a downstream CO boiler, preferably a low NO.x CO boiler. In the CO boiler, as CO is oxidized to C0 2, a reduced amount of gas phase reduced nitrogen species is oxidized to NO x, thereby providing an increase in the overall reduction of NO x, emitted into the environment.