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Method for making porous mullite-containing composites
Porous aluminum-containing ceramic bodies are treated to form acicular mullite crystals onto the surfaces of their pores. The crystals are 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.
Method for making porous mullite-containing composites
Porous aluminum-containing ceramic bodies are treated to form acicular mullite crystals onto the surfaces of their pores. The crystals are 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.
Method for making porous mullite-containing composites
PYZIK ALEKSANDER J (Autor:in) / SHINKEL NICHOLAS M (Autor:in) / ZIEBARTH ROBIN P (Autor:in)
19.09.2017
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
- METHOD FOR MAKING POROUS MULLITE-CONTAINING COMPOSITES
Europäisches Patentamt | 2017
Method for making porous mullite-containing composites
| Europäisches Patentamt | 2015