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Zinc-based metal organic frameworks (ZITs) with mixed ligands for hydrogen storage

A metal-organic framework, mixed ligand technology, applied in the direction of zinc-organic compounds, non-metallic elements, hydrogen, etc., can solve the problem that MOF materials do not have such a large amount of work.

Pending Publication Date: 2022-01-04
INDIAN OIL CORPORATION
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0012] Furthermore, no mixed-ligand based MOF materials have been reported so far for the efficient storage of H at −10 °C to 25 °C. 2 Ability
[0013] Moreover, thermal stability is also the case for mixed-ligand based MOF materials for efficient storage of H 2 important factor of , and no such extensive work has been done on such highly thermally stable mixed-ligand-based MOF materials

Method used

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  • Zinc-based metal organic frameworks (ZITs) with mixed ligands for hydrogen storage
  • Zinc-based metal organic frameworks (ZITs) with mixed ligands for hydrogen storage
  • Zinc-based metal organic frameworks (ZITs) with mixed ligands for hydrogen storage

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Embodiment -1

[0058] A zinc (Zn) metal precursor solution was prepared by dissolving 2 g to 5 g of zinc acetate dihydrate in 10 mL to 30 mL of dimethylformamide (DMF). Similarly, by dissolving 2 g to 5 g of benzene-1,3,5-tricarboxylic acid (BTC) and 0.2 g to 1 g of 2-methylimidazole (mIm) in 10 mL to 30 mL of dimethylformaldehyde The organic ligand solution was prepared in amide (DMF). Thereafter, the obtained zinc (Zn) metal precursor solution and the organic ligand solution were sonicated for 10 minutes to 30 minutes. Afterwards, the zinc (Zn) metal precursor solution was transferred to a round-bottomed flask, and organic ligands of benzene-1,3,5-tricarboxylic acid (BTC) and 2-methylimidazole (mIm) were added dropwise thereto solution to obtain a reaction mixture. Further, 30 mL to 50 mL of dimethylformamide (DMF) was added to the reaction mixture. The resulting reaction mixture was then heated at 100°C to 140°C for 12 hours to 48 hours. The obtained reaction precipitate was filtered ...

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Abstract

The invention relates to the synthesis of novel Zn (II)-based metal organic frameworks with mixed organic ligands of 1, 3, 5-benzene tricarboxylic acid (BTC) and 2-methylimidazole (mIm) through a simple and economical solvothermal method. The synthesized MOF has a cuboid morphology, has a high surface area (1248 m<2> / g), and is capable of adsorbing hydrogen at a temperature of -10 DEG C to 25 DEG C and a pressure of 100 bar. The hydrogen adsorption capacity of the new MOF is in the range of 23 weight percent to 0.2 weight percent.

Description

technical field [0001] The present invention relates to zinc-based metal organic frameworks (MOFs) and their synthesis. Specifically, the present invention relates to novel Zn(II)-based metal-organic frameworks (ZITs) based on mixed organic ligands of 1,3,5-benzenetricarboxylic acid (BTC) and 2-methylimidazole (mIm). Among them, the Zn(II)-based metal-organic framework (ZIT) is synthesized by a simple and economical solvothermal method. Background technique [0002] Metal-organic frameworks (MOFs) are an emerging class of hybrid materials with organic flexible scaffolds and topological structures of traditional materials such as zeolites and activated carbonates. Metal-organic frameworks (MOFs) are mainly composed of metal ions and organic ligands to form one-dimensional, two-dimensional or three-dimensional structures. The diverse shapes and morphologies of metal-organic frameworks (MOFs) have a dramatic impact on their properties and uses in many technical fields (e.g., ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30
CPCC08G83/008B01J20/226B01J20/28066B01J20/3085C07F3/06C01B3/0015Y02E60/32
Inventor 塔潘·贝拉阿马尔迪普·辛格卡拉达尔·塞瓦尔克里斯托弗·贾亚拉杰乌米什·斯里瓦斯塔瓦阿洛科·夏尔马古尔普里特·辛格·卡普尔桑卡拉·斯里·文卡塔·拉马库马尔
Owner INDIAN OIL CORPORATION
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