Method for preparing metal organic framework

Patent metadata

Field	Value
Publication number	US-2025353866-A1
Application number	US-202519210604-A
Country	US
Kind code	A1
Filing date	May 16, 2025
Priority date	May 20, 2024
Publication date	Nov 20, 2025
Grant date	—

Abstract

A metal organic framework may be prepared using acoustic cavitation. The method includes preparing a precursor solution including a metal precursor and an organic ligand; emitting an ultrasonic wave to the precursor solution; centrifuging the precursor solution to obtain a precipitate; and washing and drying the precipitate. A solvent of the precursor solution may have a boiling point of 170° C. or lower.

First claim

What is claimed is:

1 . A method for preparing a metal organic framework, the method comprising:
preparing a precursor solution comprising a metal precursor and an organic ligand; emitting an ultrasonic wave to the precursor solution; centrifuging the precursor solution; removing a supernatant from the centrifuged precursor solution to obtain a precipitate; and washing and drying the precipitate, wherein a solvent of the precursor solution has a boiling point in a range of 35° C. to 170° C.

2 . The method of claim 1 , wherein the metal precursor comprises at least one selected from the group consisting of:
Zn(CH 3 COO) 2 ·2H 2 O, Zn(NO 3 ) 2 ·6H 2 O, and ZnCl 2 .

3 . The method of claim 1 , wherein the organic ligand comprises at least one selected from the group consisting of:
H 2 BDC, H 4 DOBDC, H 4 TTFTB, MeIM, H 2 BTDD, and H 6 HHTP.

4 . The method of claim 1 , wherein the solvent of the precursor solution comprises at least one selected from the group consisting of:
water, dimethylformamide, methanol, and ethanol.

5 . The method of claim 1 , wherein a molar ratio between the metal precursor and the organic ligand is in a range of 0.5:1 to 30:1.

6 . The method of claim 1 , wherein a concentration of the organic ligand in the precursor solution is in a range of 0.02M to 0.3M.

7 . The method of claim 1 , wherein the precursor solution does not comprise a modulator.

8 . The method of claim 1 , wherein the emitting ultrasonic wave is performed for a time duration in a range of 1 minute to 4 hours.

9 . The method of claim 1 , wherein the emitting the ultrasonic wave is performed under a temperature in a range of 15° C. to 50° C.

10 . The method of claim 1 , wherein the emitting the ultrasonic wave is performed using a sonication bath.

11 . The method of claim 1 , wherein the emitting the ultrasonic wave is performed in air atmosphere or in nitrogen atmosphere.

12 . The method of claim 1 , wherein a solvent used for the washing comprises at least one selected from the group consisting of:
DMF, chloroform, methanol, ethanol, DCM, and acetone.

13 . A method for preparing a metal organic framework, the method comprising:
preparing a precursor solution comprising:
a metal precursor,
an organic ligand; and
a solvent;
emitting, via a sonication bath, an ultrasonic wave to the precursor solution; centrifuging the precursor solution; removing a supernatant from the centrifuged precursor solution to obtain a precipitate; and washing and drying the precipitate.

14 . The method of claim 13 , wherein the solvent has a boiling point in a range of 35° C. to 170° C.

15 . The method of claim 13 , wherein the solvent comprises at least one solvent selected from the group consisting of water, dimethylformamide, methanol, and ethanol.

16 . A method for preparing a metal organic framework, the method comprising:
preparing a precursor solution comprising:
a metal precursor,
an organic ligand; and
a solvent selected from a group consisting of water, dimethylformamide, methanol, and ethanol;
emitting, via a sonication bath, an ultrasonic wave to the precursor solution; centrifuging the precursor solution; and removing a supernatant from the centrifuged precursor solution to obtain a precipitate.

17 . The method of claim 16 , wherein the solvent has a boiling point in a range of 35° C. to 170° C.

18 . The method of claim 17 , wherein the metal precursor comprises at least one selected from the group consisting of:
Zn(CH 3 COO) 2 ·2H 2 O, Zn(NO 3 ) 2 ·6H 2 O, and ZnCl 2 .

19 . The method of claim 18 , wherein the organic ligand comprises at least one selected from the group consisting of:
H 2 BDC, H 4 DOBDC, H 4 TTFTB, MeIM, H 2 BTDD, and H 6 HHTP.

20 . The method of claim 16 , wherein a solvent used for washing the precipitate comprises at least one selected from the group consisting of:
DMF, chloroform, methanol, ethanol, DCM, and acetone.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Postech Res & Business Dev Found

Inventors

• Lee Seung Joon
• Park Sunah
• Yi Jaekyung

Classifications

• B01J19/10

  employing sonic or ultrasonic vibrations · CPC title

• C07F3/06 Primary

  Zinc compounds · CPC title