Metal organic framework material with petal-shaped core-shell structure and preparation method and application thereof

A metal-organic framework and core-shell structure technology, applied in chemical instruments and methods, other chemical processes, process efficiency improvement, etc., can solve the problems of slow kinetic behavior and low rare earth adsorption capacity, and achieve large adsorption capacity and preparation Convenient and widely applicable effects
CN110404510AActive Publication Date: 2019-11-05LIAONING UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LIAONING UNIVERSITY
Publication Date
2019-11-05

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Abstract

The invention is applied to the technical field of rare earth metal adsorption, and in particular relates to a metal organic framework material with a petal-shaped core-shell structure and a preparation method and application thereof. The preparation method is as follows: 1) zirconium tetrachloride, 2-aminoterephthalic acid, glacial acetic acid and N, N-dimethylformamide are taken and stirred at room temperature, then transferred into a hydrothermal reaction kettle to react for 24 hours at 120 DEG C, cooled to room temperature, and washed to obtain UiO-66-NH2; and 2) weighing and ultrasonically dispersing the UiO-66-NH2 in absolute methanol, adding PVP for stirring, adding zinc nitrate hexahydrate for stirring, then adding 2-methylimidazole, stirring and centrifugally drying to obtain petal-shaped core-shell structure adsorbent UiO-66-NH2@ZIF-8. The preparation method is simple, green and pollution-free, and the prepared adsorbent has high separation and enrichment efficiency for rareearth elements and practical applicability.
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Description

technical field

[0001] The invention is applied in the technical field of rare earth metal adsorption, and in particular relates to a metal organic framework material with a petal-shaped core-shell structure and a preparation method and application thereof. Background technique

[0002] Rare earth elements are 17 elements consisting of scandium (Sc), yttrium (Y) and 15 lanthanoids (Ln). Rare earth elements have developed rapidly due to their unique magnetic, electrical and optical properties, and have become the most important components in electric vehicles (Nd, La, Dy), optical fibers (Nd, Er, Eu) and energy-saving lamps (Gd, La, Eu, Tb, Yb). key elements of . Global interest in clean and green technologies has also significantly boosted the overall market value of rare earth elements. Therefore, rare earth metals have become an important raw material for my country's economy and further development. However, the limited global rare earth reserves (130 million tons) and...

Claims

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