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Preparation method and application of MnO2/Cu-Al-BTC ternary metal-organic framework material

A ternary metal and organic framework technology, applied in the direction of catalyst activation/preparation, separation methods, chemical instruments and methods, etc., can solve the problems of high energy consumption and long time consumption, and achieve low energy consumption, short reaction time, and uniform particles Effect

Inactive Publication Date: 2019-10-08
DALIAN UNIV OF TECH
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Benefits of technology

This patented technology uses Micrometer wave (MW) radiation with special chemical substances called acids or bases to create metal oxide nanoparticles. These metals are then mixed together into larger crystalline structures like foams made from clay mineral wool. By controllably adding these mixtures at different temperatures, it becomes possible to make various types of molecular sieves such as zeolite, silica gel, etc., by adjusting their structure parameters. Overall this innovative technique allows for fast and effective production of highly pure compounds without requiring excessive amounts of water resources compared to traditional methods.

Problems solved by technology

This technical issue addressed in this patents relates to finding suitable catalyst compositions for removing carbon dioxides from exhaust gases without causing damage or contamination on sensitive areas like humans' bodies due to greenhouse effect caused by methane released during combustion processes. Current solutions involve expensive chemical substances like ammonia and urea, while some proposers propose nonmetal sulfur compounds called copper btcene complex(CC), which offer improved properties compared to traditional iron based catalysis systems.

Method used

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  • Preparation method and application of MnO2/Cu-Al-BTC ternary metal-organic framework material
  • Preparation method and application of MnO2/Cu-Al-BTC ternary metal-organic framework material
  • Preparation method and application of MnO2/Cu-Al-BTC ternary metal-organic framework material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: the preparation method of Cu-Al precursor material

[0028] Get 4.8mmol, 1.0293g trimesic acid (H 3BTC) reagent, 25mL of absolute ethanol, 3mL of benzoic acid, and 2mL of acetic acid are put into a 100mL beaker, and the beaker is placed on a magnetic stirrer to mix and stir until dissolved; add 6.78mmol, 3.1488g of dihydroxy-bistetramethyl chloride to the beaker Ethylenediamine copper (II), 1.24mmol, 0.6159g (octadecyl-9-enyl acetoacetate-O1', O3) dipropane-2-alcohol aluminum and 35mL ultrapure water, set Mix and stir on a magnetic stirrer for 0.5h until dissolved; place the beaker containing the mixed solution in a microwave reactor, and react at 100°C for 0.5h. After naturally cooling to room temperature, collect the reactant by centrifugation. The centrifugation collection condition is Speed: 9000r / min, time: 5min.

[0029] The collected samples were washed 3 times with 30 mL of absolute ethanol, and collected by centrifugation each time. The samples...

Embodiment 2

[0030] Embodiment 2: the preparation method of Mn precursor solution

[0031] Get 4.2mmol, 0.8312g manganese chloride tetrahydrate (MnCl 2 4H 2 O) The solid was placed in 30 mL of absolute ethanol, placed on a magnetic stirrer and stirred for 0.5 h until dissolved, and configured into a solution with a Mn ion concentration of 0.14 mol / L. Add 5 mL of a mixture of FMES and OP-6 at a molar ratio of 1:0.83 to the solution, and stir at room temperature for 0.5 h.

Embodiment 3

[0032] Example 3: MnO 2 / Synthesis method of Cu-Al-BTC

[0033] Mix 0.3g Cu-Al precursor material with 12ml Mn precursor solution in a beaker, and stir magnetically at room temperature for 3h. The mixture was filtered, and the filtered solid was heated at 100°C for 8h. After the solid sample is cooled to room temperature, it is taken out and stored at 240°C under N 2 The sample was calcined in a tube furnace for 2 h under atmosphere to obtain dark blue MnO 2 / Cu-Al-BTC powder sample.

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Abstract

The invention belongs to the technical field of novel functional material design and preparation and provides a preparation method and application of a MnO2/Cu-Al-BTC ternary metal-organic framework material. The preparation method is characterized in that a Cu-Al precursor material excellent in physical and chemical properties is synthesized by using a microwave-assisted heating-impregnation combined method is as the synthesizing method, selecting the mixed liquid of benzoic acid and acetic acid as the stabilizer and using di-mu-hydroxo-bis[(N,N,N',N'-tetramethylethylenediamine)copper(II)] chloride and aluminum 9-octadecenylacetoacetate-diisopropoxide as the metal salt, and then FMES and OP-6 are selected as the molecule inducer to induce MnO2 to enter the framework structure of the Cu-Alprecursor material to prepare a MnO2/Cu-Al-BTC catalyst with ternary metal active sites. The denitrification efficiency of the prepared material reaches 90-96%, and the structural stability of the material can be kept until the temperature reaches 340 DEG C.

Description

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Claims

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Application Information

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Owner DALIAN UNIV OF TECH
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