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    Composition and process for removing arsenic and selenium from aqueous solution
    34.
    发明授权
    Composition and process for removing arsenic and selenium from aqueous solution 失效
    从水溶液中除去砷和硒的组成和工艺

    公开(公告)号：US06800204B2

    公开(公告)日：2004-10-05

    申请号：US10266240

    申请日：2002-10-08

    Applicant: John F. Harck ,  Stephanie Wilkis ,  Ivan Winters

    Inventor： John F. Harck ,  Stephanie Wilkis ,  Ivan Winters

    IPC: C02F128

    CPC classification number: B01J20/0207 ,  B01D15/00 ,  B01J20/06 ,  B01J2220/42 ,  C02F1/281 ,  C02F1/58 ,  C02F1/683 ,  C02F2101/103

    Abstract: The invention is a new composition and process for lanthanum oxide concentrate that is used to significantly reduce arsenic and/or selenium concentration levels in aqueous solutions. The lanthanum oxide concentrate is a mixture of lanthanum oxide and one or more oxides from the following group: neodymium oxide, cerium oxide, parseodymiun oxide, strontium oxide, calcium oxide and sodium oxide. The process of manufacture comprises the steps of sintering the lanthanum oxide concentrate, then washing the resultant media. The process of use is the contact of the lanthanum oxide concentrate with an aqueous solution containing arsenic and/or selenium whereby the lanthanum oxide concentrate removes at least a portion of the arsenic and/or selenium from the aqueous solution.

    Abstract translation: 本发明是用于显着降低水溶液中砷和/或硒浓度水平的氧化镧浓缩物的新组合物和方法。 氧化镧浓缩物是氧化镧和一种或多种来自下列组分的氧化物的混合物：氧化钕，氧化铈，氧化锶，氧化锶，氧化钙和氧化钠。 制造方法包括烧结氧化镧浓缩物，然后洗涤所得的介质的步骤。 使用的过程是氧化镧浓缩物与含有砷和/或硒的水溶液的接触，由此氧化镧浓缩物从水溶液中除去至少一部分砷和/或硒。

    Versatile oxygen sorbents and devices
    36.
    发明申请
    Versatile oxygen sorbents and devices 审中-公开
    多功能吸氧剂和设备

    公开(公告)号：US20040127358A1

    公开(公告)日：2004-07-01

    申请号：US10607251

    申请日：2003-06-25

    Inventor： Michael E. DeRosa ,  Mingqian He ,  Yuming Xie

    IPC: B01J020/02

    CPC classification number: B01J20/06 ,  B01J20/0207 ,  B01J20/0211 ,  B01J20/0281 ,  B01J20/0288 ,  B01J20/0296 ,  B01J20/3204 ,  B01J20/3236 ,  B01J2220/42

    Abstract: The invention according to one aspect provides oxygen sorbent materials, which are able to remove trace amounts of oxygen in either a gas-flow or an enclosed system over a wide temperature range. In particular, the invention relates to bulk solid oxygen sorbents that can lower equilibrium oxygen concentrations to below 1 part per trillion (1 ppt). The oxygen sorbents have high surface area, nano-sized crystalline mixed oxides that include cerium oxide, zirconium oxide and preferably yttrium oxide, and an aliquot of catalytic materials such as precious metal. The present sorbents can work in noxious environments, since the materials are not sensitive to toxic elements, which would typically poison conventional catalysts. In another aspect, a product and method for fabricating an opto-electronic device that includes a getter material, incorporating an iteration of the sorbent material, is provided. The getter material operates by bulk transport and has a capacity to absorb and retain large quantities of oxygen per volume and other contaminants over a wide temperature range. This is a useful feature for opto-electronicnullalso known as photonicnulldevices, especially those with polymeric components, since they often suffer from photo-degradation caused by the presence of gaseous oxygen and other contaminants in the optical pathway.

    Abstract translation: 根据一个方面的本发明提供氧吸附剂材料，其能够在宽的温度范围内在气流或封闭系统中除去痕量的氧。 特别地，本发明涉及能将平衡氧浓度降至低于1兆比特（1ppt）的体固固体氧吸附剂。 氧吸附剂具有高表面积，纳米尺寸的结晶混合氧化物，其包括氧化铈，氧化锆和优选氧化钇，以及诸如贵金属的催化材料等分试样。 目前的吸附剂可以在有毒环境中使用，因为这些材料对于常规催化剂的毒性元素不敏感。 在另一方面，提供了一种用于制造光电子器件的产品和方法，其包括引入吸附剂材料迭代的吸气剂材料。 吸气剂材料通过散装运输，并且具有在宽的温度范围内吸收和保留大量氧气和其它污染物的能力。 这对于光电子（也称为光子器件，尤其是具有聚合物组分的光子器件）而言是有用的特征，因为它们经常遭受光通路中存在气态氧和其它污染物引起的光降解。

    Process for removing sulfur oxides from a gas
    39.
    发明授权
    Process for removing sulfur oxides from a gas 失效
    从气体中除去硫氧化物的方法

    公开(公告)号：US4836993A

    公开(公告)日：1989-06-06

    申请号：US536247

    申请日：1983-09-27

    Applicant: Ralph J. Bertolacini ,  Eugene H. Hirschberg ,  Frank S. Modica

    Inventor： Ralph J. Bertolacini ,  Eugene H. Hirschberg ,  Frank S. Modica

    IPC: B01D53/50 ,  B01J20/04

    CPC classification number: B01D53/508 ,  B01J20/0207 ,  B01J20/041 ,  B01J20/08 ,  B01J20/3078 ,  B01J20/3433 ,  B01J2220/42

    Abstract: Sulfur oxides are removed from a gas by an absorbent which comprises an inorganic oxide composition in association with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium and dysprosium, wherein said inorganic oxide composition is selected from the group consisting of MgAl.sub.2 O.sub.4, mixtures of alumina with magnesium oxide and mixtures of magnesium oxide with MgAl.sub.2 O.sub.4. The absorbent can be circulated through a fluidized catalytic cracking process together with hydrocarbon cracking catalyst to reduce sulfur oxide emissions from the regeneration zone.

    Abstract translation: 通过吸收剂将硫氧化物从气体中除去，该吸收剂包含与选自镧，铈，镨，钐和镝中的至少一种游离或组合的稀土金属相关联的无机氧化物组合物，其中所述无机氧化物组合物为 选自MgAl 2 O 4，氧化铝与氧化镁的混合物以及氧化镁与MgAl 2 O 4的混合物。 吸收剂可与烃裂化催化剂一起通过流化催化裂化过程循环，以减少再生区的硫氧化物排放。

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