Preparation method of ZIFs/LDHs composite material

A technology of composite materials and mixed solutions, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, chemical/physical processes, etc., to achieve the effect of improving stability

Inactive Publication Date: 2013-12-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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  • Preparation method of ZIFs/LDHs composite material
  • Preparation method of ZIFs/LDHs composite material

Examples

Experimental program
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Embodiment approach

[0011] Realize the embodiment of the present invention as follows:

Embodiment approach 1

[0012] Implementation mode 1: 60 mL containing 2 mmol Zn(NO 3 ) 2 ·6H 2 O, 4 mmol Mg(NO 3 ) 2 ·6H 2 O and 1.5 mmol Al(NO 3 ) 3 9H 2 The mixed solution of O and 2.0 mol / L NaOH solution were simultaneously dropped into 50 mL of 0.14 mol / L NaOH solution 2 CO 3 solution, the pH value was kept constant at 11 by adjusting the drop rate of NaOH solution, and then the prepared white emulsion was loaded into a 100 mL stainless steel reactor equipped with a polytetrafluoroethylene liner, and the o C / min is heated up to 140 ° C, crystallized for 2 hours, and the obtained sample is filtered and washed to neutrality, 80 o C dried for 8 hours to obtain ZnMgAl-LDH samples.

Embodiment approach 2

[0013] Implementation mode 2: 60 mL containing 2 mmol Zn(NO 3 ) 2 ·6H2 O, 0.5 mmol Ni(NO 3 ) 2 ·6H 2 O and 5 mmol Al(NO 3 ) 3 9H 2 The mixed solution of O and 2.0 mol / L NaOH solution were simultaneously dropped into 50 mL of 0.14 mol / L NaOH solution 2 CO 3 solution, the pH value was kept constant at 8 by adjusting the drop rate of NaOH solution, and then the prepared white emulsion was loaded into a 100 mL stainless steel reactor equipped with a polytetrafluoroethylene liner, and the o C / min is heated up to 180 ° C, crystallized for 20 hours, the resulting sample is filtered, washed to neutral, 80 o C dried for 8 hours to obtain ZnNiAl-LDH samples.

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Abstract

The invention discloses a preparation method of a ZIFs/LDHs composite material, in particular to a composite material which is prepared by growing ZIFs on LDHs under a certain synthesis conditions based on layered dihydroxy metal hydroxides (LDHs) of metal ions in a zeolite like imidazole frameworks (ZIFs) as bases, and has a zeolite like imidazole framework structure and the layered dihydroxy metal hydroxides. The organic-inorganic composite material prepared by the method integrates the properties of the organic-inorganic materials and is expected to be applied in the fields of adsorption, separation and catalysis.

Description

technical field [0001] The preparation method of a kind of ZIFs / LDHs composite material of the present invention belongs to the category of physical chemistry and materials chemistry, is specifically related to the layered double hydroxyl metal hydroxide ( LDHs) as the matrix, and under certain synthesis conditions, the growth of ZIFs materials is carried out on LDHs, thereby preparing a composite material with ZIFs and LDHs. This material integrates the properties of the two materials and is a new type of organic material. -Inorganic composite materials, which are expected to be applied in the fields of adsorption, separation and catalysis. Background technique [0002] In recent years, a new material called MOFs (Metal-Organic Frameworks) has attracted great attention. This material is a crystalline material with a periodic network structure formed by self-assembly through the metal-ligand complexation between organic ligands and metal ions. Bridge organic ligands to coo...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01J31/28B01J31/32
Inventor 范彬彬刘明明史秀锋王琰李瑞丰
Owner TAIYUAN UNIV OF TECH
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