| 摘要 |
PROBLEM TO BE SOLVED: To obtain a BEA-type metallosilicate higher in trivalent metal content than conventional ones and having small crystal grain size, and to provide a method for efficiently producing the metallosilicate. SOLUTION: This BEA-type metallosilicate, aβ-zeolite, is obtained by contacting with steam alone at 50-140 deg.C a powdery material composition comprising a trivalent metal salt, a silica source such as a tetraalkyl orthosilicate and a nonvolatile structurally indicating agent having, tetraethylammonium ion or the like.
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