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    • 1. 发明授权
    • Siliceous materials having tunable porosity and surface morphology and methods of synthesizing same
    • 具有可调孔性和表面形态的硅质材料及其合成方法
    • US08790608B2
    • 2014-07-29
    • US12209790
    • 2008-09-12
    • Brian T. HollandSascha Welz
    • Brian T. HollandSascha Welz
    • C01B33/00C01B33/12
    • C01B33/126C01B33/193C01P2006/12C01P2006/14C01P2006/16Y10T428/2982Y10T428/2991
    • Non-spherical siliceous particles having a plurality of porous branches are disclosed and claimed. The porous branches are randomly oriented and elongated, ring-like, and/or aggregated. An additive introduced during synthesis of the particles modifies pore volume and morphology. The tunability of the pore volume includes an inner diameter ranging from about 2 Å to about 50,000 Å. Synthesizing the particles includes mixing under constant or intermittent stirring in a reaction vessel an aqueous silicic acid solution with an acidic heel solution to form a mixture. The stirring may optionally be performed at a variable speed. An additive is introduced into the mixture at a controlled rate, wherein the additive imposes a pH change from a lower pH to a higher pH to the mixture to induce siliceous particle precipitation. Optionally, a metal dopand may be introduced into the particles and/or at least a portion of an outer surface located outside of the pores and/or an inner surface located inside of the pores may be modified.
    • 公开并要求保护具有多个多孔分支的非球形硅质颗粒。 多孔分支是随机取向的并且是细长的,环状的和/或聚集的。 在合成颗粒期间引入的添加剂改变孔体积和形态。 孔体积的可调性包括范围从约2到约50,000的内径。 合成颗粒包括在反应容器中在恒定或间歇搅拌下混合含水硅酸溶液与酸性鞋底溶液以形成混合物。 可以可选地以可变速度进行搅拌。 将添加剂以受控的速率引入混合物中,其中添加剂将pH从较低的pH升高到较高的pH至混合物以诱导硅质颗粒沉淀。 任选地,可以将金属掺杂物引入颗粒中,和/或位于孔外部的外表面的至少一部分和/或位于孔内部的内表面可以被修饰。
    • 5. 发明申请
    • SILICEOUS MATERIALS HAVING TUNABLE POROSITY AND SURFACE MORPHOLOGY AND METHODS OF SYNTHESIZING SAME
    • 具有可调节孔隙度和表面形态的硅质材料及其合成方法
    • US20100068519A1
    • 2010-03-18
    • US12209790
    • 2008-09-12
    • Brian T. HollandSascha Welz
    • Brian T. HollandSascha Welz
    • C01B33/00B32B5/18B32B5/16
    • C01B33/126C01B33/193C01P2006/12C01P2006/14C01P2006/16Y10T428/2982Y10T428/2991
    • Non-spherical siliceous particles having a plurality of porous branches are disclosed and claimed. The porous branches are randomly oriented and elongated, ring-like, and/or aggregated. An additive introduced during synthesis of the particles modifies pore volume and morphology. The tunability of the pore volume includes an inner diameter ranging from about 2 Å to about 50,000 Å. Synthesizing the particles includes mixing under constant or intermittent stirring in a reaction vessel an aqueous silicic acid solution with an acidic heel solution to form a mixture. The stirring may optionally be performed at a variable speed. An additive is introduced into the mixture at a controlled rate, wherein the additive imposes a pH change from a lower pH to a higher pH to the mixture to induce siliceous particle precipitation. Optionally, a metal dopand may be introduced into the particles and/or at least a portion of an outer surface located outside of the pores and/or an inner surface located inside of the pores may be modified.
    • 公开并要求保护具有多个多孔分支的非球形硅质颗粒。 多孔分支是随机取向的并且是细长的,环状的和/或聚集的。 在合成颗粒期间引入的添加剂改变孔体积和形态。 孔体积的可调性包括范围从约2到约50,000的内径。 合成颗粒包括在反应容器中在恒定或间歇搅拌下混合含水硅酸溶液与酸性鞋底溶液以形成混合物。 可以可选地以可变速度进行搅拌。 将添加剂以受控的速率引入混合物中,其中添加剂将pH从较低的pH升高到较高的pH至混合物以诱导硅质颗粒沉淀。 任选地,可以将金属掺杂物引入颗粒中,和/或位于孔外部的外表面的至少一部分和/或位于孔内部的内表面可以被修饰。