FUEL ADDITIVE CONTAINING LATTICE ENGINEERED CERIUM DIOXIDE NANOPARTICLES
    21.
    发明申请
    FUEL ADDITIVE CONTAINING LATTICE ENGINEERED CERIUM DIOXIDE NANOPARTICLES 审中-公开
    燃料添加剂包含工程二氧化碳纳米颗粒

    公开(公告)号:US20120124899A1

    公开(公告)日:2012-05-24

    申请号:US13140648

    申请日:2008-12-17

    IPC分类号: C10L1/12 B01J23/10

    摘要: A process for making cerium dioxide nanoparticles containing at least one transition metal (M) utilizes a suspension of cerium hydroxide nanoparticles prepared by mechanical shearing of an aqueous mixture containing an oxidant in an amount effective to enable oxidation of cerous ion to ceric ion, thereby forming a product stream that contains transition metal-containing cerium dioxide nanoparticles, Ce1-xMxO2, wherein “x” has a value from about 0.3 to about 0.8. The nanoparticles thus obtained have a cubic fluorite structure, a mean hydrodynamic diameter in the range of about 1 nm to about 10 nm, and a geometric diameter of less than about 4 nm. The transition metal-containing crystalline cerium dioxide nanoparticles can be used to prepare a dispersion of the particles in a nonpolar medium.

    摘要翻译: 用于制备含有至少一种过渡金属(M)的二氧化铈纳米颗粒的方法利用通过机械剪切含有氧化剂的含水混合物制备的氢氧化铈纳米颗粒的悬浮液,所述含水混合物的量有效使铈离子氧化成铈离子,从而形成 含有过渡金属的二氧化铈纳米颗粒Ce1-xMxO2的产物流,其中“x”具有约0.3至约0.8的值。 由此获得的纳米颗粒具有立方萤石结构,在约1nm至约10nm的范围内的平均流体动力学直径和小于约4nm的几何直径。 可以使用含过渡金属的结晶二氧化铈纳米颗粒来制备颗粒在非极性介质中的分散体。

    Fragmentable electron donor compounds combined with broad blue spectral sensitization
    23.
    发明授权
    Fragmentable electron donor compounds combined with broad blue spectral sensitization 失效
    可分散的电子给体化合物与广泛的蓝色光谱增感相结合

    公开(公告)号:US06509144B1

    公开(公告)日:2003-01-21

    申请号:US09236821

    申请日:1999-01-25

    IPC分类号: G03C110

    摘要: This invention comprises a photographic element comprising a support and at least one blue sensitive silver halide emulsion layer containing a tabular grain silver halide emulsion, or an emulsion in which the halide content is at least 50% chloride and no more than 5% iodide, wherein the emulsion is spectrally sensitized with at least one dye providing a peak sensitization between 446 and 500 nm and at least one dye providing a peak sensitization between 400 and 445 nm and additionally sensitized with a fragmentable electron donor of the formula: X—Y′. or an electron donor which contains an —XY′ moiety; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is H a base, &bgr;−, is covalently linked directly or indirectly to X. and wherein: 1) X—Y′ has an oxidation potential between 0 and about 1.4 V; and 2) the oxidized form of X—Y′ fragments to give the radical X• and the leaving fragment Y′; and, optionally, 3) the radical X• has an oxidation potential ≦−0.7V (that is, equal to or more negative than about −0.7 V).

    摘要翻译: 本发明包括一种照相元件,其包括载体和至少一种含有片状银卤化银乳剂的蓝色感光卤化银乳剂层,或其中卤化物含量为至少50%氯化物和不超过5%碘化物的乳液,其中 该乳液用至少一种提供446和500nm之间的峰敏感的染料和至少一种提供400和445nm之间的峰敏感的染料进行光谱增感,并用下式X-Y'的可裂解的电子给体进一步增感。 或含有-XY'部分的电子给体;其中X是电子给体部分,Y'是离开质子H或离去基团Y,条件是如果Y'是H,则基团是共价连接的 直接或间接地与X并且其中:1)XY'具有介于0和约1.4V之间的氧化电位; 和2)X-Y'片段的氧化形式,得到X基团和离去片段Y'; 和任选地,3)基团X的氧化电位<= -0.7V(即等于或大于约-0.7V的负)。

    Photographic elements containing particular blue sensitized tabular
grain emulsion
    27.
    发明授权
    Photographic elements containing particular blue sensitized tabular grain emulsion 失效
    含有特定蓝色敏化片状颗粒乳剂的摄影元件

    公开(公告)号:US5474887A

    公开(公告)日:1995-12-12

    申请号:US227931

    申请日:1994-04-15

    CPC分类号: G03C7/3041 G03C1/29

    摘要: A photographic element which has a blue sensitive emulsion with broad blue spectral coverage and yet, good speed and low fog. The element has a blue sensitive silver halide tabular grain emulsion which has a tabularity of at least 25 sensitized with a dye of formula (I) and a dye of formula (II), wherein the formula (I) dye on the emulsion has a peak sensitization of between 400-445 nm and the formula (II) dye on the emulsion has a peak sensitization of between 446-500 nm: ##STR1## wherein: Z.sub.1, Z.sub.2, Z.sub.3 and Z.sub.4 independently represent the atoms necessary to complete a substituted or unsubstituted benzene or naphthylene;X, Y, X.sub.1 and Y.sub.1 are independently O, S, Se or MR.sub.5, provided that at least X or Y is O or NR.sub.5, where R.sub.5 is a substituted or unsubstituted alkyl or aryl;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent H or a substituted or unsubstituted alkyl or aryl.

    摘要翻译: 具有蓝色感光乳剂的照相元件,具有宽的蓝色光谱覆盖率,而且具有良好的速度和低雾度。 该元件具有蓝色敏感的卤化银片状颗粒乳剂,其具有至少25个与式(I)的染料和式(II)的染料敏感的平板状物,其中乳液上的式(I)染料具有峰 在400-445nm与乳液上的式(II)染料之间的致敏作用具有446-500nm之间的峰值敏化性:其中:Z1,Z2,Z3和Z4独立地为(VI) 表示完成取代或未取代的苯或亚萘基所必需的原子; X,Y,X1和Y1独立地为O,S,Se或MR5,条件是至少X或Y为O或NR5,其中R5为取代或未取代的烷基或芳基; R1,R2,R3和R4独立地表示H或取代或未取代的烷基或芳基。