US 11,897,778 B2
Zeolite synthesis in a reactor with controlled velocity profile
Christian Riemann, Ludwigshafen (DE); Andrei-Nicolae Parvulescu, Ludwigshafen (DE); Ralf Boehling, Ludwigshafen (DE); Ulrich Mueller, Ludwigshafen (DE); Hans-Juergen Luetzel, Boehl-Iggelheim (DE); Stefanie Clade, Ludwigshafen (DE); and Christoph Schappert, Ludwigshafen (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 16/759,491
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Nov. 22, 2018, PCT No. PCT/EP2018/082212
§ 371(c)(1), (2) Date Apr. 27, 2020,
PCT Pub. No. WO2019/101854, PCT Pub. Date May 31, 2019.
Claims priority of application No. 17203017 (EP), filed on Nov. 22, 2017.
Prior Publication US 2020/0283304 A1, Sep. 10, 2020
Int. Cl. C01B 39/02 (2006.01); B01J 19/18 (2006.01); B01J 19/00 (2006.01); B01J 19/28 (2006.01); C01B 39/48 (2006.01)
CPC C01B 39/02 (2013.01) [B01J 19/0053 (2013.01); B01J 19/1843 (2013.01); B01J 19/28 (2013.01); C01B 39/48 (2013.01); B01J 2219/00029 (2013.01); B01J 2219/00033 (2013.01); B01J 2219/1943 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A process for preparing a zeolitic material having a framework structure comprising YO2 and comprising X2O3, wherein Y is Si or Si and Ti and wherein X is Al, said processing comprising:
(i) preparing a mixture comprising a source of YO2, a source of X2O3, and a liquid solvent system, wherein a molar ratio of YO2:X2O3 of the mixture prepared in (i) ranges from 1 to 1,000;
(ii) feeding the mixture prepared in (i) as a reaction mixture into a reactor;
(iii) heating the reaction mixture in the reactor, to obtain a reacted mixture comprising a zeolitic material having a framework structure comprising YO2 and comprising X2O3; and
(iv) collecting the reacted mixture obtained in (iii) as an effluent from the reactor;
wherein the reactor is a Taylor-Couette reactor comprising an inner cylinder and an outer cylinder which are coaxially aligned, wherein the Taylor-Couette reactor has a rotor-stator set-up, with the outer cylinder as a stator, wherein a total volume of the reactor containing the reaction mixture is from 5 cm3 to 1 m3,
wherein the mixture prepared in (i) further comprises at least one source for OH−, wherein said at least one source for OH− comprises a metal hydroxide,
wherein in (iii) the reaction mixture is heated to a temperature in the range of from about 100° C. to about 300° C.,
wherein in (iii) the reaction mixture is heated under autogenous pressure,
wherein in (iii) the flow regime in at least a portion (P) of the volume of the reactor is laminar, wherein the portion (P) is an uninterrupted portion of the volume of the reactor, and
wherein the uninterrupted portion (P) of the volume of the reactor constitutes 10% to 95% of the total volume of the reactor containing the reaction mixture.