PROCESS FOR THE MANUFACTURE OF PULVERULENT, POROUS CRYSTALLINE METAL SILICATES EMPLOYING FLAME SPRAY PYROLYSIS

The present invention relates to a process for the manufacture of a pulverulent, porous crystalline metal silicate, comprising the following steps:(a) hydrothermal synthesis employing an aqueous mixture comprising(A) a silicon source,(B) a metal source, and(C) an auxiliary component,yielding an aque...

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Bibliographische Detailangaben
Hauptverfasser:	HAGEMANN, Michael Gerhard, KRESS, Peter, PASCALY, Matthias, HABERKORN, Julian Dominic, REINSDORF, Arne, ANTON, Johan, HEINROTH, Andrea, SCHMIDT, Franz, WIELAND, Stefan, MORELL, Heiko, LI, Zhen
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:	The present invention relates to a process for the manufacture of a pulverulent, porous crystalline metal silicate, comprising the following steps:(a) hydrothermal synthesis employing an aqueous mixture comprising(A) a silicon source,(B) a metal source, and(C) an auxiliary component,yielding an aqueous suspension of reaction product 1, comprising a raw porous crystalline metal silicate; and(b) flame spray pyrolysis of reaction product 1, wherein the aqueous suspension obtained in step (a) is sprayed into a flame generated by combustion of a fuel in the presence of oxygen to form a pulverulent, porous crystalline metal silicate;wherein the aqueous suspension comprising reaction product 1 obtained in step (a) exhibits a solids content of ≤ 70% by weight; andwherein the effective peak temperature, Teff, experienced by at least 90% by weight of the porous crystalline metal silicate during flame pyrolysis, is in the range Tmin< Teff