US2020290884A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020290884-A1 |
| Application number | US-201716086251-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 22, 2017 |
| Priority date | Mar 30, 2016 |
| Publication date | Sep 17, 2020 |
| Grant date | — |
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A process for the calcination of a zeolitic material, wherein the process contains the steps of (i) providing a zeolitic material containing YO2 and optionally further containing X2O3 in its framework structure in the form of a powder and/or of a suspension of the zeolitic material in a liquid, wherein Y stands for a tetravalent element and X stands for a trivalent element; (ii) atomization of the powder and/or of the suspension of the zeolitic material provided in (i) in a gas stream for obtaining an aerosol; and (iii) calcination of the aerosol obtained in (ii) for obtaining a calcined powder, a zeolitic material obtained by the above process, and its use as a molecular sieve, as an adsorbent for ion-exchange, as a catalyst, and/or as a catalyst support.
Opening claim text (preview).
1 . A process for calcining a zeolitic material, the process comprising: (i) providing a zeolite material comprising YO 2 and optionally X 2 O 3 in its framework structure in a form of a powder and, or of a suspension of the zeolitic material in a liquid, wherein Y is a tetravalent element and X is a trivalent element; (ii) atomizing the powder and/or of the suspension of the zeolite material in a gas stream for obtaining an aerosol; and (iii) calcining the aerosol for obtaining a calcined powder. 2 . The process of claim 1 , wherein the providing comprises: (i.a) preparing a mixture comprising a source for YO 2 and a solvent system, wherein the mixture optionally further comprises a source for X 2 O 3 ; and (i.b) crystallizing the mixture for obtaining a suspension of a zeolitic material in a mother liquor as the suspension of the zeolitic material in a liquid. 3 . The process of claim 2 , wherein the providing further comprises: (i.c) separating the zeolitic material from the mother liquor; and (i.d) optionally washing the zeolitic material obtained in (i.b) and/or (i.c) with one or more solvents; and/or (i.e) optionally drying the zeolitic material obtained in (i.b), (i.c) and/or (i.d). 4 . The process of claim 2 , wherein the zeolitic material in the mother liquor is spray-dried. 5 . The process of claim 3 , wherein the providing further comprises: (i.f) providing a solvent system; and (i.g) suspending the zeolitic material in, the form of a powder as obtained according to (i.c), (i.d) and/or (i.e) in the solvent system. 6 . The process of claim 2 , wherein the mixture further comprises an organotemplate. 7 . The process of claim 2 , wherein the solvent system comprises water and/or one or more organic solvents. 8 . The process of claim 1 , wherein Y is at least one selected from the group consisting of Si, Sn, Ti, Zr, and Ge. 9 . The process of claim 1 , wherein X is at least one selected from the group consisting of Al, B, In, and Ga. 10 . The process of claim 1 , wherein an average particle size D50 of powder particles and/or of droplets from the suspension in the aerosol as determined according to ISO 13320:2009 is in a range of from 0.5 to 500 μm. 11 . The process of claim 1 , wherein the calcining is performed for from 5 ms to 30 s. 12 . The process of claim 1 , wherein the calcining is conducted in an oxygen containing atmosphere. 13 . A zeolitic material obtained according to the process of claim 1 . 14 . The zeolitic material of claim 13 , wherein an average particle size D50 of the zeolitic material determined according to ISO 13320:2009 is in a range of from 0.5 to 500 μm. 15 . An article comprising: the zeolitic material according to claim 13 , wherein the article is a molecular sieve, an adsorbent, for ion-exchange, a catalyst, and/or a catalyst support. 16 . The process of claim 5 , wherein the solvent system comprises water and or one or more organic solvents.
Zeolites · CPC title
using at least one organic template directing agent · CPC title
After-treatment · CPC title
Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title
Drying, e.g. preparing a suspension, adding a soluble salt and drying · CPC title
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