| US 7,575,792 B2 | ||
| Honeycomb filter for clarifying exhaust gas and method for manufacture thereof | ||
| Tsutomu Fukuda, Kakogawa (Japan); Masahiro Fukuda, Uji (Japan); Masaaki Fukuda, Kakogawa (Japan); Toshinobu Yoko, Uji (Japan); and Masahide Takahashi, Uji (Japan) | ||
| Assigned to Ohcera Co., Ltd., Osaka-shi (Japan) | ||
| Appl. No. 10/559,337 PCT Filed Jul. 09, 2004, PCT No. PCT/JP2004/010147 § 371(c)(1), (2), (4) Date Dec. 05, 2005, PCT Pub. No. WO2005/005019, PCT Pub. Date Jan. 20, 2005. |
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| Claims priority of application No. 2003-196119 (JP), filed on Jul. 11, 2003. | ||
| Prior Publication US 2007/0059484 A1, Mar. 15, 2007 | ||
| Int. Cl. B02B 3/12 (2006.01); C04B 35/00 (2006.01); C04B 35/16 (2006.01); C04B 35/03 (2006.01); C04B 35/64 (2006.01); B01J 8/02 (2006.01) | ||
| U.S. Cl. 428—116 [501/153; 501/154; 501/136; 501/108; 428/303; 423/213.2; 264/630] | 6 Claims |
| 1. A honeycomb filter for cleaning exhaust gas, wherein
the material for the honeycomb filter is an aluminum magnesium titanate sintered product obtained by firing at from 1000 to
1700° C. a mixture consisting of
100 parts by mass, as calculated as oxides, of a blend consisting of a Mg-containing compound, an Al-containing compound and
a Ti-containing compound in the same metal component ratio as the metal component ratio of Mg, Al and Ti in aluminum magnesium
titanate represented by the empirical formula MgxAl2(1−x)Ti(1+x)O5 (wherein 0.25≤x<1), where the blend consists of the elements Mg, Al, Ti and O, and optionally at least one of C, N and S;
and
1 to 10 parts by mass of an alkali feldspar represented by the empirical formula (NayK1−y)AlSi3O8 (wherein 0≤y≤1),
the aluminum magnesium titanate sintered product comprises aluminum magnesium titanate having a crystal lattice, and
Si is solid-solubilized in the crystal lattice of the aluminum magnesium titanate.
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