Method for producing iron-based catalysts
    1.
    发明授权
    Method for producing iron-based catalysts 失效
    铁基催化剂的制备方法

    公开(公告)号:US5948722A

    公开(公告)日:1999-09-07

    申请号:US949405

    申请日:1997-10-14

    摘要: A method for preparing an acid catalyst having a long shelf-life is provided comprising doping crystalline iron oxides with lattice-compatible metals and heating the now-doped oxide with halogen compounds at elevated temperatures. The invention also provides for a catalyst comprising an iron oxide particle having a predetermined lattice structure, one or more metal dopants for said iron oxide, said dopants having an ionic radius compatible with said lattice structure; and a halogen bound with the iron and the metal dopants on the surface of the particle.

    摘要翻译: 提供了一种制备具有长保质期的酸催化剂的方法,其包括用晶格相容的金属掺杂结晶的氧化铁和在高温下用卤素化合物加热现在掺杂的氧化物。 本发明还提供一种催化剂,其包括具有预定晶格结构的氧化铁颗粒,一种或多种用于所述氧化铁的金属掺杂剂,所述掺杂剂具有与所述晶格结构相容的离子半径; 和与颗粒表面上的铁和金属掺杂剂结合的卤素。

    Foams for removing pollutants and/or heavy metals from flowable media
    2.
    发明授权
    Foams for removing pollutants and/or heavy metals from flowable media 有权
    用于从可流动介质中去除污染物和/或重金属的泡沫

    公开(公告)号:US07267776B2

    公开(公告)日:2007-09-11

    申请号:US11121858

    申请日:2005-05-04

    IPC分类号: C02F1/42

    摘要: The present invention relates to a method of using foam to remove pollutants and/or heavy metals from a flowable media. The method may include providing a foam that may include cavities wherein the cavities may include an adsorbent composition of iron oxyhydroxy granules. The iron oxyhydroxy granules may have a BET surface area of >100 m2/g and a mean particle size of 0.1 mm-2 mm. The method may further include passing a flowable media containing pollutants and/or heavy metals through the foam wherein the pollutants and heavy metals may be removed from the flowable media by the iron oxyhydroxy granules. A method of manufacturing the foam is also disclosed. The method may include introducing an adsorbent composition into a liquid reaction composite to form a mixture and adding an isocyanate reaction component to the mixture to form the foam.

    摘要翻译: 本发明涉及使用泡沫从可流动介质中除去污染物和/或重金属的方法。 该方法可以包括提供可以包括空腔的泡沫,其中空腔可以包括铁羟基羟基颗粒的吸附剂组合物。 铁羟基羟基颗粒可以具有> 100m 2 / g的BET表面积和0.1mm-2mm的平均粒度。 该方法可以进一步包括使含有污染物和/或重金属的可流动介质通过泡沫,其中污染物和重金属可由铁羟基羟基颗粒从可流动介质中除去。 还公开了制造泡沫的方法。 该方法可以包括将吸附剂组合物引入到液体反应复合物中以形成混合物并将异氰酸酯反应组分加入到混合物中以形成泡沫。

    Magnetic iron oxide pigments and a process for their preparation
    4.
    发明授权
    Magnetic iron oxide pigments and a process for their preparation 失效
    磁性氧化铁颜料及其制备方法

    公开(公告)号:US4923519A

    公开(公告)日:1990-05-08

    申请号:US91059

    申请日:1987-08-31

    IPC分类号: C01G49/00 G11B5/706 H01F1/11

    CPC分类号: G11B5/70647 Y10T428/2991

    摘要: Magnetic iron oxide pigments having a monomolecular coating of a cobalt compound useful in magnetic signal recordings having a dependence of coercivity on temperature in the temperature range of from 76 K to 298 K of less than 0.13 kA/mK and having a coercivity on powder compressed to 0.9 g/cm.sup.3 of greater than 51 kA/m are prepared applying a preliminary coating of Fe.sub.3 O.sub.4 or a bertholloid compound to a magnetic iron oxide core material having the composition FeO.sub.x where x is a number from 1.33 to 1.55 and then covering the preliminary coating with a cobalt compound.

    摘要翻译: 具有钴化合物的单分子涂层的磁性氧化铁颜料,其可用于在76K至298K的温度范围内的矫顽力与温度的相关性小于0.13kA / mK的磁信号记录,并且具有压缩至 制备大于51kA / m 3的0.9g / cm 3,其中将Fe 3 O 4或硼氢化合物的初步涂层施加到具有FeO x组成的磁性氧化铁芯材料,其中x为1.33至1.55的数值,然后用 钴化合物。

    Process for the preparation of magnetic iron oxides and the pigments
obtained therefrom
    6.
    发明授权
    Process for the preparation of magnetic iron oxides and the pigments obtained therefrom 失效
    制备磁铁氧化物的方法及其获得的颜料

    公开(公告)号:US5116419A

    公开(公告)日:1992-05-26

    申请号:US448505

    申请日:1989-12-11

    摘要: Magnetic iron oxide pigments useful in manufacturing magnetic recording media are prepared by a method which comprises coating a magnetic iron oxide core particle material having the composition FeO, wherein x is from 1.33 to 1.5, in a first step with a preliminary coating of a cobalt-containing bertholloid material or a material having the composition Co.sub.x Fe.sup.II.sub.l-x Fe.sup.III.sub.2 O.sub.4 wherein x is greater than zero but less than or equal to 1 and then in a second step the preliminary coated particle is coated with a cobalt compound.

    摘要翻译: 可用于制造磁记录介质的磁性氧化铁颜料通过以下方法制备:在第一步骤中,涂覆具有组成为FeO的组成为FeO的磁性氧化铁芯颗粒材料,其中x为1.33至1.5, 含有贝壳体材料或具有组成CoxFeII1-xFeIII2O4的材料,其中x大于零但小于或等于1,然后在第二步骤中,预涂覆的颗粒涂覆有钴化合物。

    Magnetic iron oxide pigments and a process for their preparation
    7.
    发明授权
    Magnetic iron oxide pigments and a process for their preparation 失效
    磁性氧化铁颜料及其制备方法

    公开(公告)号:US4933014A

    公开(公告)日:1990-06-12

    申请号:US90929

    申请日:1987-08-31

    IPC分类号: C01G49/00 G11B5/706 H01F1/11

    CPC分类号: G11B5/70647 Y10T428/2991

    摘要: Magnetic iron oxide pigments useful in magnetic signal recordings having a dependence of coercivity on temperature in the temperature range of from 76K to 298K of less than 0.13 kA/mK and having a coercivity on powder compressed to 0.9 g/cm.sup.3 of greater than 51 kA/m are prepared by coating a magnetic iron oxide core material having the composition FeO.sub.x where x is a number from 1.33 to 1.5 in a first step with a compound containing divalent and trivalent iron having a ratio of Fe(III): Fe(II) from 0.01 to less than 2, and then in a second step coating the pre-coated core with a second coating of a cobalt compound.

    摘要翻译: 磁性氧化铁颜料可用于具有小于0.13kA / mK的76K至298K的温度范围内矫顽力与温度相关的磁信号记录,并且具有压缩至0.9g / cm 3的粉末矫顽力大于51kA / m是通过在第一步中用含有Fe(III):Fe(II)的二价和三价铁的化合物涂覆具有组成FeO x的磁性氧化铁芯材料,其中x为1.33至1.5, 0.01至小于2,然后在第二步中用钴化合物的第二涂层涂覆预涂芯。