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    Photocatalyst with modified alkyl silicate ester support and process for production thereof
    1.
    发明授权
    Photocatalyst with modified alkyl silicate ester support and process for production thereof 失效
    具有改性的烷基硅酸酯酯载体的光催化剂及其制备方法

    公开(公告)号：US5686372A

    公开(公告)日：1997-11-11

    申请号：US451650

    申请日：1995-05-26

    申请人： Cooper H. Langford ,  Giuseppe P. Lepore ,  Lalchan Persaud

    发明人： Cooper H. Langford ,  Giuseppe P. Lepore ,  Lalchan Persaud

    IPC分类号： B01J21/06 ,  B01J21/08 ,  B01J23/30 ,  B01J31/02 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02 ,  B01J101/42 ,  B01J101/50

    CPC分类号： B01J31/0212 ,  B01J31/0274 ,  B01J35/002 ,  B01J35/004 ,  B01J21/08 ,  B01J37/0209 ,  Y02W10/37

    摘要： A photocatalyst compound comprising a silica-based support material having bound thereto a photocatalyst selected from the group consisting of TiO.sub.2, WO.sub.3 and mixtures thereof, the photocatalyst compound having been derivatized by reaction with an alcohol compound. The process for producing the photocatalyst compound comprises the steps of: (i) contacting a silica-based support material having bound thereto a photocatalyst selected from the group consisting of TiO.sub.2, WO.sub.3 and mixtures thereof with an alcohol compound to form a slurry; (ii) maintaining the temperature of the slurry above the boiling point of the slurry to produce a substance having a modified surface consisting essentially of an alkyl silicate ester and esterified photocatalyst; and (iii) subjecting the substance to selective oxidation to oxidize the esterfied photocatalyst thereby producing a photocatalyst compound having a modified surface consisting essentially of an alkyl silicate ester and a photocatalyst substantially free of ester groups. The photocatalyst compound is useful, inter alia, in the treatment of a fluid containing an organic pollutant.

    摘要翻译： 一种光催化剂化合物，其包含与其结合的二氧化硅基载体材料，所述光催化剂选自TiO 2，WO 3及其混合物，所述光催化剂化合物已经通过与醇化合物的反应衍生化。 制备光催化剂化合物的方法包括以下步骤：（i）将结合有光催化剂的二氧化硅基载体材料与选自TiO 2，WO 3的混合物与醇化合物接触以形成浆料; （ii）将浆料的温度保持在浆料沸点之上，以产生具有主要由烷基硅酸酯和酯化的光催化剂组成的改性表面的物质; 和（iii）对物质进行选择性氧化以氧化酯化的光催化剂，从而制备具有基本上由烷基硅酸酯和基本上不含酯基的光催化剂组成的改性表面的光催化剂化合物。 光催化剂化合物尤其用于处理含有机污染物的流体。

    Fluid treatment process
    3.
    发明授权
    Fluid treatment process 失效
    流体处理工艺

    公开(公告)号：US06736976B2

    公开(公告)日：2004-05-18

    申请号：US09837653

    申请日：2001-04-19

    申请人： Apostolos Kantzas ,  Cooper H. Langford ,  Amit Bhargava ,  Alex Starosud

    发明人： Apostolos Kantzas ,  Cooper H. Langford ,  Amit Bhargava ,  Alex Starosud

    IPC分类号： C02F128

    CPC分类号： A61L9/205 ,  A61L9/16 ,  C02F1/281 ,  C02F1/30 ,  C02F1/325 ,  C02F1/725 ,  C02F2101/10 ,  C02F2101/30 ,  C02F2101/36 ,  C02F2201/3221 ,  C02F2201/3223 ,  C02F2209/00 ,  C02F2305/10

    摘要： A fluid treatment device for reducing the level of a chemical compound in a fluid. The device comprises: a fluid inlet; a fluid outlet; a flow-through fluid treatment zone having comprising: a radiation source, an adsorbent and a photocatalyst. The fluid treatment zone is reversibly operable between: (i) a first mode in which the fluid flows in a first direction and at least a portion of the chemical compound is adsorbed on the adsorbent; and (ii) a second mode in which the fluid flows in a second direction different from the first direction in which the absorbed chemical compound is exposed to radiation from the radiation resulting in photooxidation of the chemical compound.

    摘要翻译： 一种用于降低流体中化合物水平的流体处理装置。 该装置包括：流体入口; 流体出口; 流通流体处理区，其包括：辐射源，吸附剂和光催化剂。 流体处理区可以在以下之间可逆地操作：（i）流体沿第一方向流动并且至少一部分化合物吸附在吸附剂上的第一模式; 和（ii）第二模式，其中流体沿与吸收的化合物暴露于辐射的第一方向不同的第二方向流动，导致化合物的光氧化。

    Composite photocatalyst for refractory waste degradation
    4.
    发明授权
    Composite photocatalyst for refractory waste degradation 失效
    复合光催化剂用于难处理废物降解

    公开(公告)号：US4806514A

    公开(公告)日：1989-02-21

    申请号：US103024

    申请日：1987-09-30

    申请人： Cooper H. Langford ,  Mark K. S. Mak ,  Andrew M. Crouch

    发明人： Cooper H. Langford ,  Mark K. S. Mak ,  Andrew M. Crouch

    IPC分类号： B01J31/06 ,  B01J31/16 ,  B01J31/18 ,  B01J31/26 ,  B01J31/38 ,  B01J35/00 ,  C02F1/32 ,  B01J31/22

    CPC分类号： C02F1/32 ,  B01J31/06 ,  B01J31/1683 ,  B01J31/181 ,  B01J31/183 ,  B01J31/26 ,  B01J31/38 ,  B01J35/004 ,  B01J2531/025 ,  B01J2531/16 ,  B01J2531/22 ,  B01J2531/26 ,  B01J2531/824 ,  B01J2540/32 ,  B01J31/08

    摘要： A composite photocatalyst for refractory waste treatment comprising particles of a wide band gap semiconductor material selected from the group consisting of titanium oxide, cadmium sulfide and cadmium selenide, the particles being coated with a polymer film capable of absorbing a refractory waste substrate to be treated and comprising a pyridine-containing polymer and a divalent metal porphyrin or phthalocyanine-based dye. The dye is molecularly dispersed throughout the film and chemically bonded to the pyridine-containing polymer. Upon mixing of the photocatalyst with the refractory waste substrate and irradiation with light having a wavelength of about 300 to about 400 nm, the photocalyst of the invention generates in the polymer film thereof reactive species which are sufficiently oxidizing to degrade the refractory waste substrate absorbed in the polymer film.

    摘要翻译： 一种用于难处理废物处理的复合光催化剂，包括从由氧化钛，硫化镉和硒化镉组成的组中选择的宽带隙半导体材料的颗粒，所述颗粒涂覆有能够吸收待处理的难熔废物基材的聚合物膜，以及 包含含吡啶的聚合物和二价金属卟啉或酞菁系染料。 染料分子分散在整个膜中并与含吡啶的聚合物化学键合。 在将光催化剂与耐火废料基板混合并用波长为约300至约400nm的光照射时，本发明的光学晶体在其聚合物膜中产生充分氧化以降解被吸收的耐火废料底物的反应性物质 聚合物膜。

    Photocatalyst having an x-ray diffraction pattern which is substanially free of characteristic reflections associated with crystalline TiO.sub.2
    5.
    发明授权
    Photocatalyst having an x-ray diffraction pattern which is substanially free of characteristic reflections associated with crystalline TiO.sub.2 失效
    光催化剂具有基本上不含与结晶TiO 2相关的特征反射的X射线衍射图

    公开(公告)号：US5981426A

    公开(公告)日：1999-11-09

    申请号：US920357

    申请日：1997-08-29

    申请人： Cooper H. Langford ,  Yiming Xu

    发明人： Cooper H. Langford ,  Yiming Xu

    IPC分类号： B01J21/06 ,  B01J23/30 ,  B01J29/48 ,  B01J35/00 ,  B01J35/02 ,  C02F1/32 ,  B01J37/34

    CPC分类号： C02F1/32 ,  B01J35/002 ,  B01J35/004

    摘要： A photocatalyst compound comprising: (i) a photocatalyst selected from the group consisting of TiO.sub.2, WO.sub.3 and mixtures thereof, the photocatalyst being substantially free of sharp, narrow band X-ray reflections at angles corresponding those of crystalline TiO.sub.2, WO.sub.3 and mixtures thereof, and (ii) a porous, crystalline, adsorbent support material. A process for producing the photocatalyst compound is also disclosed. The process comprises: (i) hydrolysing a non-ionic titanium compound to produce a colloidal suspension having an average particle size of less than about 250 .ANG.; (ii) contacting a porous, crystalline, adsorbent support material with the colloidal suspension to produce an impregnated support; and (iii) calcining the impregnated support to produce the photocatalyst compound. The photocatalyst compound is useful, in the treatment of a fluid containing an organic pollutant.

    摘要翻译： 一种光催化剂化合物，其包含：（i）选自TiO 2，WO 3及其混合物的光催化剂，所述光催化剂基本上不含与结晶TiO 2，WO 3及其混合物相对应的角度的尖锐窄带X射线反射， 和（ii）多孔，结晶的吸附剂载体材料。 还公开了一种制备光催化剂化合物的方法。 该方法包括：（i）水解非离子钛化合物以产生平均粒径小于约250的胶态悬浮液; （ii）使多孔，结晶的吸附剂载体材料与胶态悬浮液接触以产生浸渍的载体; 和（iii）煅烧浸渍的载体以制备光催化剂化合物。 光催化剂化合物在含有有机污染物的流体的处理中是有用的。