专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1996006803A1 PROCESS FOR PRODUCING CERAMIC POWDERS, ESPECIALLY TITANIUM DIOXIDE USEFUL AS A PHOTOCATALYST 审中-公开
标题翻译：用于生产陶瓷粉末的方法，特别是作为光催化剂有用的二氧化钛
公开(公告)号：WO1996006803A1
公开(公告)日：1996-03-07
申请号：PCT/US1995010841
申请日：1995-08-25
申请人： UNIVERSITY OF CINCINNATI
发明人： UNIVERSITY OF CINCINNATI , PRATSINIS, Sotiris, Emmanuel , VEMURY, Srinivas , FOTOU, George, P. , GUTSCH, Andreas
IPC分类号： C01G23/07
CPC分类号： C01B21/06 , C01B13/28 , C01B33/183 , C01G19/02 , C01G23/07 , C01P2002/54 , C01P2004/82 , C01P2006/12
摘要： A gas phase process for the production of titanium dioxide powders having well-controlled crystalline and surface area characteristics is disclosed. In this process, which is preferably carried out in a laminar diffusion flame reactor, vapor phase TiCl4 and oxygen are mixed in a reaction area which is heated externally. The titanium dioxide powder formed is then collected. It is preferred that the heat source used be a hydrocarbon fueled (e.g., methane) flame. Optionally, a vapor phase dopant (such as SiCl4) may be added to the reaction mixture to desirably affect the physical properties of the titanium dioxide produced. In a particularly preferred embodiment, a corona electric field is positioned across the area where the combustion reaction takes place (i.e., the reaction area). High anatase, high surface area titanium dioxide powders made by this process are excellent photocatalysts. The products of this process and the use of those products as photocatalysts are also disclosed. This process is also useful for producing other ceramic powders (such as silicon dioxide and tin oxide), as well as pure metallic or alloy powders.
摘要翻译：公开了一种用于生产具有良好控制的结晶和表面积特性的二氧化钛粉末的气相方法。在该方法中，其优选在层状扩散火焰反应器中进行，气相TiCl 4和氧气在外部加热的反应区域中混合。然后收集形成的二氧化钛粉末。优选地，所使用的热源是烃燃料（例如甲烷）火焰。任选地，可将气相掺杂剂（例如SiCl 4）加入到反应混合物中以期望影响所生产的二氧化钛的物理性能。在特别优选的实施例中，电晕电场位于燃烧反应发生的区域（即反应区域）上。高锐钛型，通过该方法制备的高表面积二氧化钛粉末是优异的光催化剂。还公开了该方法的产物和这些产物作为光催化剂的用途。该方法对于生产其它陶瓷粉末（例如二氧化硅和氧化锡）以及纯金属或合金粉末也是有用的。

IPRDB

热门服务

关于我们

友情链接

联系方式