摘要:
A method of making silica-layered double hydroxide microspheres having the formula I : (i) wherein, M z+ and M 'y+ are two different charged metal cations; z = 1 or 2; y = 3 or 4; 0 0, q > 0, X n- is an anion; with n > 0 a = z(1-x) + xy-2; and the AMO-solvent is an 100% aqueous miscible organic solvent; comprises the steps: (a) contacting silica microspheres and a metal ion containing solution containing metal ions M z+ and M 'y+ in the presence of a base and an anion solution; (b) collecting the product; and (c) optionally treating the product with AMO-solvent and recovering the solvent treated material to obtain the silica-layered double hydroxide microspheres. Preferably, M in the formula I is Li, Mg, Ni or Ca. Preferably, M' in formula I is Al. The invention further provides silica-layered double hydroxide microspheres having the formula I. The silica-layered double hydroxide microspheres may be used as catalysts and/or catalyst supports.
摘要翻译:制备具有式I的二氧化硅层状双氢氧化物微球的方法:(i)其中,Mz +和M'y +是两种不同的带电金属阳离子; z = 1或2; y = 3或4; 0 0,q> 0,Xn-是阴离子; 其中n> 0 a = z(1-x)+ xy-2; 并且AMO-溶剂是100%水混溶性有机溶剂; 包括以下步骤:(a)在碱和阴离子溶液的存在下,使二氧化硅微球和含有金属离子Mz +和M'y +的含金属离子的溶液接触; (b)收集产品; 和(c)任选地用AMO-溶剂处理产物并回收溶剂处理的物质,得到二氧化硅层状双氢氧化物微球。 式I中的M优选为Li,Mg,Ni或Ca。 式I中的M'优选为Al。 本发明还提供具有式I的二氧化硅 - 层状双氢氧化物微球。二氧化硅层状双氢氧化物微球可用作催化剂和/或催化剂载体。
摘要:
본 명은 태양전지의 광흡수층 제조용 금속 칼코게나이드 나노 입자를 합성하기 위한 단일 소스 전구체 (single-source precursor)로서,구리(Cu),아연 (Zn),주석 (Sn)으로 이루어진 군으로부터 선택되는 어느 하나의 금속에 VI족 원소가 리간드 (ligand) 형태로 결합되어 있는 것을 특징으로 하는 단일 소스 전구체 및 이를 1종 이상 열처리하여 제조된 것을 특징으로 하는 금속 칼코게나이드 나노 입자 및 이의 제조방법과 이를 이용해 제조하는 박막 및 박막의 제조방법에 관한 것이다.
摘要:
VO 2 and V 2 O 5 nano- or micro-materials. The VO 2 nano-materials and micro- materials have an Ml phase structure and oxygen stoichiometry that deviates 2% or less from theoretical stoichiometry. The VO 2 nano-materials and micro-materials may doped with cation dopants and/or anion dopants. The VO 2 and V 2 O 5 nano- or micro-materials can be made by hydrothermal methods starting with V 3 O 7 ∙Η 2 O nano- or micro-material. The VO 2 and V 2 O 5 nano- or micro-materials can be used as, for example, thermochromic window coatings.
摘要:
A highly purified diatomite composition may indude greater than or equal to 90% silica, from about 0.5% to about 5% of a calcium-containing compound, and less than or equal to about 2% total of aluminum-containing oxides and iron-containing oxides. A method of making a highly purified diatomite composition may include providing a diatomite comprising at least 5% of a calcium-containing compound, calcining the diatomite, and acid washing the calcined diatomite. The calcined, acid-washed diatomite may include less than or equal to about 1 % total of extractable aluminum-containing oxides and iron-containing oxides, and less than or equal to about 5% of the calcium-containing compound. The acid washing may include an acid selected from the group consisting of sulfuric acid (Η 2 SO 4 ), hydrochloric acid (HCI), and nitric acid (HNO 3 ). The method may not include a flotation step.
摘要翻译:高纯度的硅藻土组合物可以含有大于或等于90%的二氧化硅,约0.5%至约5%的含钙化合物,以及小于或等于约2%的含铝氧化物和含铁 氧化物。 制备高纯度硅藻土组合物的方法可以包括提供包含至少5%的含钙化合物的硅藻土,煅烧硅藻土和酸洗涤煅烧的硅藻土。 煅烧的,酸洗的硅藻土可以包括小于或等于约1%的可萃取的含铝氧化物和含铁氧化物,以及小于或等于约5%的含钙化合物。 酸洗可以包括选自硫酸(H 2 SO 4),盐酸(HCl)和硝酸(HNO 3)的酸。 该方法可以不包括浮选步骤。
摘要:
This invention relates to products of aqueous and other chemical synthetic routes for encapsulation of a core material with an inorganic shell and finished compositions of a core- shell particulate material for application in thermoplastic, thermoset, and coatings resins prior to compounding or application or subsequent thermal processing steps. Disclosed is a composition of particles containing a shell of inorganic oxides or mixed-metal inorganic oxides and a core material of complex inorganic colored pigment, laser direct structuring additives, laser marking, or other beneficial metal oxides, metal compounds, or mixed-metal oxide materials, wherein the shell material is comprised of any single oxide or combination of oxides is taught. Preferred elements of composition for the shell are oxides and silicates of B, Ni, Zn, Al, Zr, Si, Sn, Bi, W, Mo, Cr, Mg, Mn, Ce, Ti, and Ba (or mixtures thereof). Applications may include, but are not limited to, coatings or plastic articles or materials for molded interconnect devices, durable goods, housings, assemblies, devices, and articles that are to be exposed to additional thermal processing. The resulting core-shell materials function in plastic and coatings formulations by minimizing or eliminating detrimental interactions with the resins and metal containing additives resulting in loss of mechanical properties.
摘要:
Die Erfindung betrifft ein Verfahren zur Oberflächenbeschichtung von anorganischen Festkörperpartikeln, insbesondere von Titandioxid-Pigmentpartikeln in einer wässrigen Suspension. Die unbehandelten Partikel, insbesondere Ti0 2 -Grundkörper werden zu einer wässrigen Suspension angezeigt und anschließend deagglomeriert. Die deagglomerierte wässrige Partikelsuspension (2) wird erfindungsgemäß aus einem Vorlagegefäß (Gefäß) (1) in einem Kreislaufprozess (3) gefördert (umgepumpt). In dem Vorlagegefäß befindet sich ein Hochleistungsrührwerk (4). Das Hochleistungsrührwerk weist eine Mindest- Umfangsgeschwindigkeit von 15 m/s oder eine spezifische Rührleistung P/V von mindestens 30 W/m 3 auf. In dem Kreislauf (3) ist weiterhin ein auf dem Rotor-Stator-Prinzip basierender Durchflussmischer (z.B. Inline-Dispergierer) (5) installiert. Die wasserlöslichen Vorläuferverbindungen der Beschichtungssubstanzen (6) ebenso wie die gegebenenfalls erforderlichen pH-steuernden Substanzen (7) werden in den Durchflussmischer dosiert. Das erfindungsgemäße Verfahren führt im Vergleich zu Verfahren des Stands der Technik bei Titandioxidpartikeln zu Oberflächenbeschichtungen höherer Glätte (niedrige spezifische Oberfläche nach BET) und verbesserter Dichte (niedrige Schwefelsäurelöslichkeit). Zudem wird weniger Beschichtungssubstanz separat ausgefällt (verbesserter Glanz).
摘要翻译:本发明涉及一种用于在水性悬浮液中的无机固体粒子的表面涂层,尤其是二氧化钛颜料颗粒的方法。 未处理的颗粒,尤其是TiO 2的基体所显示的水悬浮液,然后解聚集。 将解凝聚粒子水悬浮液(2)根据本发明从一个储存容器(容器)(1)在一个循环过程(3)(循环)输送。 在接收器容器是一个高功率的搅拌器(4)。 高功率的搅拌器具有15米/秒的最小圆周速度,或至少30 W / m 3的特定的搅拌器功率P / V。 在电路(3)仍然是一个基于转子 - 定子原理流混合器(例如,直插式分散)安装(5)。 涂层物质(6),以及任何必要的pH控制物质(7)的所述水溶性前体化合物计量入流动混合器。 本发明的方法的结果相比,对于二氧化钛粒子的现有技术的方法进行表面的涂层更高的平滑度(根据BET低比表面积)和改进的密度(低Schwefelsäurelöslichkeit)。 此外,较少的涂层物质是单独沉淀(改善的光泽度)。