Porous aluminum oxide

摘要

The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-Al2O3, to methods for producing the substrate material, and to the use of the substrate material.

主权项

1. A substrate material comprising alpha-Al2O3, wherein the alpha-Al2O3 comprises from 30-90% by weight based on the sum of all inorganic components of a first alpha-Al2O3 component having a primary crystal grain size of 1 to 3 μm and an agglomerate size of 3 to 5 μm, from 10 to 70% by weight based on the sum of all inorganic components of a second alpha-Al2O3 component having a primary crystal grain size of 0.3 to 1 μm and an agglomerate size of 0.5 to 1 μm, wherein the substrate material is porous and wherein the alpha-Al2O3 has a mechanically stable, component-penetrating framework structure comprising the alpha-Al2O3,
wherein the pore diameter distribution curve thereof measured by mercury intrusion porosimetry has a relative maximum between 0.3 and 1.3 μm and another relative maximum between 3 and 6 μm.