Molding for a hydrophobic zeolitic material and process for its production

Patent metadata

Field	Value
Publication number	US-2016250624-A1
Application number	US-201415030754-A
Country	US
Kind code	A1
Filing date	Oct 22, 2014
Priority date	Oct 23, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

The present invention relates to A process for the production of a molding, comprising (I) providing a zeolitic material; (II) mixing the zeolitic material provided in step (I) with one or more binders; (III) kneading of the mixture obtained in step (II); (IV) molding of the kneaded mixture obtained in step (III) to obtain one or more moldings; (V) drying of the one or more moldings obtained in step (IV); and (VI) calcining of the dried molding obtained in step (V); wherein the zeolitic material provided in step (I) displays a water adsorption ranging from 1 to 15 wt.-% when exposed to a relative humidity of 85%, as well as to a molding obtainable or obtained according to the inventive process in addition to a molding per se and to their respective use.

First claim

1 . A process for the production of a molding, comprising:
(I) providing a zeolitic material; (II) mixing the zeolitic material provided in (I) with one or more binders; (III) kneading of the mixture obtained in (II); (IV) molding of the kneaded mixture obtained in (III) to obtain one or more moldings; (V) drying of the one or more moldings obtained in (IV); and (VI) calcining of the dried molding obtained in (V); wherein the zeolitic material provided in (I) displays a water adsorption ranging from 1 to 15 wt.-% when exposed to a relative humidity of 85%.

2 . The process of claim 1 , wherein the one or more binders are selected from the group consisting of inorganic binders.

3 . The process of claim 1 , wherein the mixture obtained in (II) displays a weight ratio of the one or more binders to the zeolitic material (binder:zeolitic material) ranging from 0.1 to 0.6.

4 . The process of claim 1 , wherein (II) further comprises mixing the zeolitic material and the one or more binders with a solvent system, wherein the solvent system comprises one or more solvents.

5 . The process of claim 4 , wherein the mixture obtained in (II) displays a weight ratio of the solvent system to the zeolitic material (solvent system:zeolitic material) ranging from 0.7 to 1.7.

6 . The process of claim 1 , wherein (II) further comprises mixing the zeolitic material and the one or more binders with one or more pore forming agents.

7 . The process of claim 6 , wherein the mixture obtained in (II) displays a weight ratio of the one or more pore forming agents to the zeolitic material (pore forming agent:zeolitic material) ranging from 0.1 to 0.7.

8 . The process of claim 6 , wherein the mixture obtained in (II) displays a weight ratio of the solvent system to the one or more binders and pore forming agents to the zeolitic material (solvent system:binder and pore forming agent:zeolitic material) ranging from (0.7-1.7):(0.4-1):1.

9 . The process of claim 1 , wherein the calcining of the dried molding obtained in (V) is performed at a temperature ranging from 350 to 850° C.

10 . The process of claim 1 , further comprising:
(VII) subjecting the calcined molding obtained in (VI) to a hydrothermal treatment.

11 . The process of claim 10 , wherein the hydrothermal treatment is performed with a water-containing solvent system and/or with an aqueous solution.

12 . The process of claim 10 , wherein the hydrothermal treatment is performed for a duration ranging from 1 to 48 hours.

13 . The process of claim 1 , wherein the zeolitic material provided in (I) comprises one or more zeolites.

14 . A molding, obtained by a process according to claim 1 .

15 . A molding, wherein said molding contains a zeolitic material displaying a water adsorption ranging from 1 to 15 wt.-% when exposed to a relative humidity of 85%.

16 . The molding of claim 15 , wherein the zeolitic material comprises one or more zeolites.

17 . The molding of claim 15 , wherein the zeolitic material has an MFI-type framework structure comprising YO 2 and optionally comprising X 2 O 3 ,
wherein Y is a tetravalent element, and X is a trivalent element, said material having an X-ray diffraction pattern comprising at least the following reflections:

Diffraction angle 2θ/°

Intensity (%)
[Cu K(alpha 1)]

 55-100
7.66-8.20

40-75
8.58-9.05

 92-100
22.81-23.34

49-58
23.64-24.18

16-24
29.64-30.21

14-25
44.80-45.25

16-24
45.26-45.67

wherein 100% relates to the intensity of the maximum peak in the X-ray powder diffraction pattern.

18 . The molding of claim 17 , wherein the 29 Si MAS NMR of the zeolitic material comprises:
a first peak (P″1) in the range of from −110.4 to −114.0 ppm; and a second peak (P″2) in the range of from −100.2 to −104.2 ppm.

19 . The molding of claim 18 , wherein the deconvoluted 29 Si MAS NMR spectrum comprises one additional peak comprised in the range of from −113.2 to −115.2 ppm.

20 . The molding of claim 17 , wherein at least a portion of the Y atoms and/or of the X atoms in the MFI-type framework structure is isomorphously substituted by one or more elements.

21 . The molding of claim 17 , wherein a molar ratio of YO 2 to the one or more element ranges from 5 to 100.

22 . The molding of claim 17 , wherein the MFI-type framework structure of the zeolitic material does not contain X 2 O 3 .

23 . The molding of claim 17 , wherein Y is selected from the group consisting of Si, Sn, Ti, Zr, Ge, and mixtures of two or more thereof.

24 . The molding of claim 15 , wherein the zeolitic material comprises one or more cation and/or cationic elements as ionic non-framework elements.

25 . The molding of claim 15 , wherein the molding further comprises one or more binders.

26 . The molding of claim 15 , wherein a BET surface area of the zeolitic material contained in the molding determined according to DIN 66131 ranges from 50 to 700 m 2 /g.

27 . The molding of claim 15 , wherein a specific surface area of the molding determined according to DIN 66131 ranges from 50 to 700 m 2 /g.

28 . The molding of claim 15 , wherein a pore volume of the molding determined according to DIN 66133 ranges from 0.1 to 2.5 ml/g.

29 . The molding of claim 15 , having a mechanical strength of from 1 to 15 N.

30 . The molding of claim 15 , wherein the molding has a tortuosity relative to water ranging from 0.3 to 5.0±0.2.

31 . A process, comprising employing the molding of claim 15 as a catalyst, catalyst support, adsorbent, or for ion exchange.

Assignees

• Basf Se

Inventors

• Parvulescu Andrei-Nicolae
• Mueller Ulrich
• Luetzel Hans-Juergen
• Teles Joaquim Henrique
• Riedel Dominic
• Seelig Bianca
• Urbanczyk Daniel
• Wegerle Ulrike
• Hesse Michael
• Walch Andreas
• Bendig Volker
• Stegmann Veit
• Althoefer Henning
• Gaspar Boris
• Stallmach Frank
• Pusch Anne Kristin

Classifications

• B01J2229/40

  Special temperature treatment, i.e. other than just for template removal · CPC title

• B01J20/28061

  being in the range 100-500 m2/g · CPC title

• C01B39/085

  Group IVB- metallosilicates · CPC title

• B01J20/2803

  Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products · CPC title

• B01J20/28073

  being in the range 0.5-1.0 ml/g · CPC title