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:
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。
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。
摘要:
Cobalt coated, needle shaped berthollide iron oxide pigments are disclosed which have a core of the composition (Fe.sub.x.sup.2+, Fe.sub.2.sup.3+)O.sub.3+x wherein 0.3
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:
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。