发明授权
US5435988A Clathrasil of the dodecasil 1 H structural type having a small average crystal size 失效
十二面体1 H结构型的斜纹石具有小的平均晶体尺寸

Clathrasil of the dodecasil 1 H structural type having a small average
crystal size
摘要:
The invention relates to a process for the preparation of crystalline clathrasil of the dodecasil 1 H structural type having an average crystal size of not more than 20 .mu.m, characterised in that an alkaline aqueous silicate-containing medium comprising templates and crystallisation seeds is heat-treated, the crystallisation seeds content, relative to the SiO.sub.2 content of the medium, being not less than 1% by weight.
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