| 摘要 |
An omega type zeolite of high thermal stability, present in the form of hexagonal prismatic monocrystals having scored or plane faces of 0.1 mu m in edge and 0.5 to 5 mu m in length, is obtained through crystallization from a mother solution containing a silica source, alumina, metallic oxide, an organic cation and water, in which the alumina source is a crystalline aluminosilicate of which at least one part is in suspension in the mother solution, and in its acid form this zeolite can be used as catalyst for hyration of olefins and isomeric change of xylenes. |
