公开(公告)号：US06383443B1

公开(公告)日：2002-05-07

申请号：US09448712

申请日：1999-11-24

申请人： De-Yin Jeng ,  Chorng-Jeou Chen ,  Takayuki Suzuki

发明人： De-Yin Jeng ,  Chorng-Jeou Chen ,  Takayuki Suzuki

IPC分类号： C04B35624

CPC分类号： C04B35/111 ,  C04B35/624

摘要： Disclosed is a sol-gel process for making high-density monolithic alpha-alumina articles. Cracking problems caused by shrinkage of the gel during the drying and firing stages are minimized by controlling the temperature and humidity during the drying process and by using molds formed of prescribed polymeric materials, preliminarily coated with a silicone release agent. The process of the invention provides porous alpha-alumina articles having a controlled microstructure and a controlled pore size distribution, which are beneficial features when the material is used in practical applications, e.g., as substrates for gas sensors.

摘要翻译： 公开了用于制备高密度单片α-氧化铝制品的溶胶 - 凝胶法。 通过控制干燥过程中的温度和湿度以及使用预先涂覆有硅酮脱模剂的预定聚合物材料形成的模具，可以最大限度地减少干燥和焙烧阶段凝胶收缩引起的裂纹问题。 本发明的方法提供具有受控微结构和可控孔径分布的多孔α-氧化铝制品，当材料用于实际应用中时，这些特征是有益的特征，例如作为气体传感器的基底。

公开(公告)号：US06669892B2

公开(公告)日：2003-12-30

申请号：US10006983

申请日：2001-12-04

申请人： Rahul Ganguli ,  Steven Colbern

发明人： Rahul Ganguli ,  Steven Colbern

IPC分类号： C04B35624

CPC分类号： C04B35/624 ,  C04B35/14 ,  C04B35/62218 ,  C04B35/64

摘要： A new method is disclosed for producing thin plates by sintering a thin gel plate (e.g., silica) made using a sol-gel process, which substantially eliminates warpage of the plate during the sintering step. Sintering a sol-gel based silica plate to a dense glass typically causes significant shrinkage, and this can cause the plate to curl, especially around its edges. This phenomenon is referred to as warpage. In the method of the invention, the sintering step is performed while the gel plate is mounted on a support surface, separated by a thin layer of refractory powder. At the high sintering temperature, the powder partially fuses and sticks to both the gel plate and the support surface, which prevents non-uniform stresses in the gel plate from warping the plate.

公开(公告)号：US06620368B1

公开(公告)日：2003-09-16

申请号：US09615628

申请日：2000-07-13

申请人： Shi-Ho Wang ,  Chih-Hsing Cheng ,  Sharon Doh

发明人： Shi-Ho Wang ,  Chih-Hsing Cheng ,  Sharon Doh

IPC分类号： C04B35624

CPC分类号： C04B35/6264 ,  C03C1/006 ,  C04B35/624 ,  C04B35/62655 ,  C04B2235/3418 ,  C04B2235/441

摘要： A process which uses sol-gel to process oxide-based monoliths which are virtually free of cracks, without nullifying the desired attributes of the oxide-based monoliths. The method comprises substantially drying a wet porous gel monolith by removing a portion of the liquid from the pores of the gel monolith while the gel monolith remains wet, shrinking in size, and becoming correspondingly more dense, then removing the remaining portion of the liquid from the pores of the gel monolith such that the outer region of the gel monolith is not dried before the inner region of the gel monolith is dried. The gel monolith is substantially dried under conditions in which the liquid evaporation rate is no greater than the pore liquid diffusion rate.

摘要翻译： 使用溶胶 - 凝胶来处理实际上没有裂纹的氧化物基整料，而不使基于氧化物的整料的期望属性无效的方法。 该方法包括通过从凝胶整体的孔中除去一部分液体基本上干燥湿多孔凝胶整料，同时凝胶整体保持湿润，尺寸缩小并变得相应更致密，然后将剩余部分的液体从 凝胶整料的孔隙使​​得在凝胶整料的内部区域被干燥之前，凝胶整料的外部区域不被干燥。 在液体蒸发速率不大于孔隙液体扩散速率的条件下，将凝胶整料基本干燥。

公开(公告)号：US06479004B1

公开(公告)日：2002-11-12

申请号：US08394099

申请日：1995-07-24

申请人： Hugo Van Thillo ,  Philippe Bodart ,  Christian Lamotte ,  Jacques Grootjans

发明人： Hugo Van Thillo ,  Philippe Bodart ,  Christian Lamotte ,  Jacques Grootjans

IPC分类号： C04B35624

CPC分类号： B01J37/0018 ,  B01J21/12 ,  B01J37/033 ,  C10G45/46

摘要： The present invention relates to a process for preparing silica-alumina carriers preferably under the form of extrudates. Further, the present invention also provides hydrogenation catalysts prepared thereof. These catalysts are used in an improved process for the reduction of the aromatic hydrocarbons content present in hydrocarbon streams.

摘要翻译： 本发明涉及一种优选以挤出物形式制备二氧化硅 - 氧化铝载体的方法。 此外，本发明还提供了其制备的氢化催化剂。 这些催化剂用于减少烃流中存在的芳族烃含量的改进方法。

公开(公告)号：US06342177B1

公开(公告)日：2002-01-29

申请号：US09280647

申请日：1999-03-29

申请人： Kenji Kitaoka

发明人： Kenji Kitaoka

IPC分类号： C04B35624

CPC分类号： C23C18/1254 ,  C04B35/472 ,  C04B35/624 ,  C23C18/1208 ,  C23C18/1295

摘要： The present invention relates to a method for production of a metal oxide thin film and a method for production of an arrayed metal oxide functional device, comprising the steps of: preparing a sol containing a material and a solvent; gelating the sol to give a gel member; processing the gel member under a pressure of not less than 0.2 MPa at 100 to 400° C. in a water-vapor-containing atmosphere; and conducting a heat treatment on the water-vapor-processed gel member at 200 to 400° C.

摘要翻译： 金属氧化物薄膜的制造方法及其制造方法本发明涉及金属氧化物薄膜的制造方法及其制造方法，其特征在于，包括以下步骤：制备含有材料和溶剂的溶胶，凝胶化所述溶胶，得到凝胶 在含水蒸气的气氛中，在100〜400℃下，在不低于0.2MPa的压力下加工凝胶体; 并在200〜400℃下对水蒸气处理的凝胶部件进行热处理。

公开(公告)号：US06299822B1

公开(公告)日：2001-10-09

申请号：US09249482

申请日：1999-02-12

申请人： Young-Sik Yoon ,  Young-Min Baik

发明人： Young-Sik Yoon ,  Young-Min Baik

IPC分类号： C04B35624

CPC分类号： C03B19/12 ,  C03B37/016 ,  Y02P40/57

摘要： A method of a fabricating silica glass by sol-gel process is provided. The method includes mixing silica, a binder, a dispersing agent and a gelling agent, and forming a sol without air bubbles; injecting the sol into a mold, the injection of the sol into the mold being controlled by the pressure of an inert gas; gelating the sol injected into the mold and demolding the gel; and drying the demolded gel, and thermally-treating the dried gel. Therefore, incorporation of impurities and air bubbles during injection of a sol into a mold is minimized, and injection amount and injection rate of the sol can be controlled.

摘要翻译： 提供了通过溶胶 - 凝胶法制造石英玻璃的方法。 该方法包括混合二氧化硅，粘合剂，分散剂和胶凝剂，并形成无气泡的溶胶; 将溶胶注入模具中，通过惰性气体的压力将溶胶注入模具中; 将注入模具的溶胶凝胶化并脱模凝胶; 并干燥脱模的凝胶，并对干燥的凝胶进行热处理。 因此，将溶胶注入模具时的杂质和气泡的并入最小化，可以控制溶胶的注入量和注入量。