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1. WO2020064401 - PROCESS FOR THE MANUFACTURE OF PULVERULENT, POROUS CRYSTALLINE METAL SILICATES EMPLOYING FLAME SPRAY PYROLYSIS

Publication Number WO/2020/064401
Publication Date 02.04.2020
International Application No. PCT/EP2019/074707
International Filing Date 16.09.2019
IPC
C01B 37/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
37Compounds having molecular sieve properties but not having base-exchange properties
C01B 39/02 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
CPC
C01B 37/005
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
37Compounds having molecular sieve properties but not having base-exchange properties
005Silicates, i.e. so-called metallosilicalites or metallozeosilites
C01B 39/026
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
026After-treatment
Applicants
  • EVONIK OPERATIONS GMBH [DE]/[DE]
Inventors
  • SCHMIDT, Franz
  • ANTON, Johan
  • PASCALY, Matthias
  • BERNHARD, Andrea
  • WIELAND, Stefan
  • MORELL, Heiko
  • KRESS, Peter
  • HAGEMANN, Michael
  • LI, Zhen
  • HABERKORN, Julian Dominic
  • REINSDORF, Arne
Agents
  • EVONIK PATENT ASSOCIATION
Priority Data
18196479.225.09.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR THE MANUFACTURE OF PULVERULENT, POROUS CRYSTALLINE METAL SILICATES EMPLOYING FLAME SPRAY PYROLYSIS
(FR) PROCÉDÉ DE FABRICATION DE SILICATES MÉTALLIQUES CRISTALLINS POREUX ET PULVÉRULENTS UTILISANT UNE PYROLYSE AU PISTOLET À FLAMME
Abstract
(EN)
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 max, and wherein Tmin is 750 °C, and wherein Tmax is 1250 °C.
(FR)
La présente invention concerne un procédé de fabrication d'un silicate métallique cristallin poreux, pulvérulent, comprenant les étapes suivantes : (a) synthèse hydrothermale employant un mélange aqueux comprenant (A) une source de silicium, (B) une source de métal, et (C) un composant auxiliaire, produisant une suspension aqueuse de produit de réaction 1, comprenant un silicate métallique cristallin poreux brut ; et (b) pyrolyse au pistolet à flamme du produit de réaction 1, la suspension aqueuse obtenue à l'étape (a) étant pulvérisée dans une flamme générée par combustion d'un combustible en présence d'oxygène pour former un silicate métallique cristallin poreux, pulvérulent ; la suspension aqueuse comprenant le produit de réaction 1 obtenue à l'étape (a) présentant une teneur en solides ≤ 70 % en poids ; et la température de pic effective, Teff, subie par au moins 90 % en poids du silicate métallique cristallin poreux pendant la pyrolyse à la flamme, se situe dans la plage Tmin < Teff < Tmax, et Tmin étant de 750°C, et Tmax étant de 1 250 °C.
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Latest bibliographic data on file with the International Bureau