Carbon-supported Tantalum Oxide Nanocomposites and Methods of Making the Same
    1.
    发明申请
    Carbon-supported Tantalum Oxide Nanocomposites and Methods of Making the Same 审中-公开
    碳载氧化钽纳米复合材料及其制备方法

    公开(公告)号:US20100209804A1

    公开(公告)日:2010-08-19

    申请号:US12372511

    申请日:2009-02-17

    IPC分类号: H01M4/00 H01M4/88

    摘要: The present invention includes hybrid nanocomposite catalysts having tantalum oxide nanoparticles covalently bound to a functionalized carbon support and methods of making the same. The methods include functionalizing the carbon support surfaces, dispersing the functionalized carbon support in an organic liquid, and adding a ta-containing metalorganic precursor. The metalorganic precursor has an alkoxide group that reacts with the functional groups on the carbon support surface. The organic liquid is removed and the resultant material has properties that make it a suitable catalyst, especially in polymer-electrolyte-membrane fuel cell applications.

    摘要翻译: 本发明包括具有与官能化碳载体共价结合的氧化钽纳米颗粒的混合纳米复合催化剂及其制备方法。 所述方法包括官能化碳载体表面,将官能化碳载体分散在有机液体中,并加入含Ta金属有机前体。 金属有机前体具有与碳载体表面上的官能团反应的醇盐基团。 除去有机液体,所得材料具有使其成为合适催化剂的性质,特别是在聚合物 - 电解质膜燃料电池应用中。

    Aluminide coatings
    7.
    发明授权
    Aluminide coatings 失效
    铝涂层

    公开(公告)号:US07575815B2

    公开(公告)日:2009-08-18

    申请号:US11338952

    申请日:2006-01-24

    IPC分类号: B32B15/20 B32B15/01

    摘要: Disclosed herein are aluminide coatings. In one embodiment coatings are used as a barrier coating to protect a metal substrate, such as a steel or a superalloy, from various chemical environments, including oxidizing, reducing and/or sulfidizing conditions. In addition, the disclosed coatings can be used, for example, to prevent the substantial diffusion of various elements, such as chromium, at elevated service temperatures. Related methods for preparing protective coatings on metal substrates are also described.

    摘要翻译: 本文公开了铝化物涂层。 在一个实施方案中,涂层用作阻挡涂层以保护金属基材,例如钢或超合金,从各种化学环境,包括氧化,还原和/或硫化条件。 此外,所公开的涂层可以用于例如防止在升高的使用温度下各种元素例如铬的显着扩散。 还描述了在金属基底上制备保护涂层的相关方法。

    Self-assembled monolayer and method of making
    9.
    发明授权
    Self-assembled monolayer and method of making 有权
    自组装单层和制作方法

    公开(公告)号:US06733835B2

    公开(公告)日:2004-05-11

    申请号:US10347040

    申请日:2003-01-17

    IPC分类号: B05D300

    摘要: According to the present invention, the previously known functional material having a self-assembled monolayer on a substrate has a plurality of assembly molecules each with an assembly atom with a plurality of bonding sites (four sites when silicon is the assembly molecule) wherein a bonding fraction (or fraction) of fully bonded assembly atoms (the plurality of bonding sites bonded to an oxygen atom) has a maximum when made by liquid solution deposition, for example a maximum of 40% when silicon is the assembly molecule, and maximum surface density of assembly molecules was 5 silanes per square nanometer. Note that bonding fraction and surface population are independent parameters. The method of the present invention is an improvement to the known method for making a siloxane layer on a substrate, wherein instead of a liquid phase solution chemistry, the improvement is a supercritical phase chemistry. The present invention has the advantages of greater fraction of oxygen bonds, greater surface density of assembly molecules and reduced time for reaction of about 5 minutes to about 24 hours.

    摘要翻译: 根据本发明,在衬底上具有自组装单层的先前已知的功能材料具有多个组装分子,每个组装分子具有多个结合位置的组装原子(当硅是组装分子时的四个位置),其中键合 完全结合的组装原子(多个与氧原子结合的键合位置)的分数(或分数)在通过液体溶液沉积制备时具有最大值,例如当硅是组装分子时最大为40%,最大表面密度 的组装分子是每平方毫米5硅烷。 注意,结合分数和表面总体数是独立的参数。 本发明的方法是对已知的在基材上制备硅氧烷层的方法的改进,其中代替液相溶液化学,改进是超临界相化学。 本发明具有氧键分数更高,组装分子表面密度更大,反应时间缩短约5分钟至约24小时的优点。