Merck Patent Gesellschaft MIT Beschrankter Haftung

Hte Aktiengesellschaft

Ferdi Schuth

Klaus Unger

Axel Reich

Michael Grebner

Stephan Andreas Schunk

Armin Brenner

Wolfram Stichert

Armin Lange De Oliveira

Horst Reichert

Process for the detection of a product in the discharge of a catalytic material of a plurality of catalytic materials

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.

Clathrasil of the dodecasil 1 H structural type having a small average

The invention relates to a process for the preparation of low-template clathrasil, comprising heat-treating an alkaline aqueous silicate-containing medium containing crystallization seeds and an amount of a template such that the template content of the clathrasil, relative to the number of moles of the SiO.sub.2 of the medium, is less than 2 mol %.

Low-template clathrasil

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Mainz, Germany

Ferdi Schuth