Inorganic porous sintered body and filter
AssigneeSumitomo Chemical Company, Limited
InventorsMasahide Mohri, Tetsu Umeda
Life of this patent
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Abstract
An inorganic porous sintered body comprising inorganic particles of polyhedral crystals, said inorganic porous sintered body having pores formed by the inorganic particles, wherein said pores have a pore size distribution that a ratio of D10 to D90 is not more than 3 and D50 is 0.01-5 .mu.m when D10, D50 and D90 are pore sizes at 10%, 50% and 90% cumulation from the largest pore size of a cumulative pore volume distribution, respectively, and a porosity is 10-50%.
Claims12
An alumina porous sintered body comprising alumina polyhedral particles having a primary particle size of from 0.1 to 3 .mu.m, said alumina porous sintered body having pores formed by the alumina particles, wherein said pores have a pore size distribution such that a ratio of D10 to D90 is not more than 2 and D50 is 0.01-1 .mu.m, wherein D10, D50 and D90 represent pore sizes at 10%, 50% and 90% cumulation from the largest pore size of a cumulative pore volume distribution, respectively, and the porous sintered body has a porosity of 10-50%.
A filter comprising a packed body of alumina polyhedral particles having a primary particle size of 0.1 to 3 .mu.m as a filtering layer or an intermediate layer, said packed body having pores formed by the alumina particles, wherein said pores have a pore size distribution such that a ratio of D10 to D90 is not more than 2 and D50 is 0.01-1 .mu.m, wherein D10, D50 and D90 represent pore sizes at 10%, 50% and 90% cumulation from the largest pore size of a cumulative pore volume distribution, respectively, and the packed body has a porosity of 10-50%.
Dependencies are inferred from the claim text.