公开(公告)号：US20150037531A1

公开(公告)日：2015-02-05

申请号：US14345423

申请日：2012-11-07

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Aleksander J. Pyzik ,  Nicholas M. Shunkel ,  Robin P. Ziebarth

IPC: C04B38/00 ,  C04B35/44

CPC classification number: C04B38/0096 ,  C04B35/44 ,  C04B35/6286 ,  C04B35/62863 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/62897 ,  C04B38/0006 ,  C04B38/0054 ,  C04B41/009 ,  C04B41/5037 ,  C04B41/87 ,  C04B2235/48 ,  Y10T428/24149 ,  C04B35/10 ,  C04B35/185 ,  C04B35/19 ,  C04B35/195 ,  C04B35/478 ,  C04B41/4529 ,  C04B41/4552 ,  C04B41/457 ,  C04B41/4596

Abstract: Porous aluminum-containing ceramic bodies are treated to form acicular mullite crystals onto the surfaces of their pores. The crystalsare formed by contacting the body with a fluorine-containing gas or a source of both fluorine and silicon atoms to form fluorotopaz at the surface of the pores, and then decomposing the fluorotopaz to form acicular mullite crystals. This process allows the surface area of the ceramic body to be increased significantly while retaining the geometry (size, shape, general pore structure) of the starting body. The higher surface area makes the body more efficient as a particulate filter and also allows for easier introduction of catalytic materials.

Abstract translation: 处理多孔含铝陶瓷体以在其孔的表面上形成针状莫来石晶体。 通过使主体与含氟气体或氟原子和硅原子的源接触而形成晶体，以在孔的表面形成氟托瓦斯，然后分解氟托吡嗪以形成针状莫来石晶体。 该过程允许陶瓷体的表面积显着增加，同时保持起始体的几何形状（尺寸，形状，通用孔结构）。 更高的表面积使得身体作为微粒过滤器更有效，并且还允许更容易地引入催化材料。