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...

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Bibliographische Detailangaben
Hauptverfasser:	ANTON, JOHAN, HEINROTH, ANDREA, LI, ZHEN, WIELAND, STEFAN, HABERKORN, JULIAN DOMINIC, SCHMIDT, FRANZ, KRESS, PETER, HAGEMANN, MICHAEL GERHARD, MORELL, HEIKO, REINSDORF, ARNE, PASCALY, MATTHIAS
Format:	Patent
Sprache:	eng ; fre
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; and wherein 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