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Cerium-based metal organic framework derivative material with synergistic effect with low-temperature plasma as well as preparation method and application of cerium-based metal organic framework derivative material

A low-temperature plasma, synergistic technology, applied in the preparation/processing of rare earth metal compounds, separation methods, chemical instruments and methods, etc., can solve the problems of poor reaction performance and uncontrollable product morphology, and achieve low cost, excellent Catalytic performance, simple operation effect

Pending Publication Date: 2022-03-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of CeO that is easy to operate, can be synthesized on a large scale and is economical in view of the uncontrollable product morphology and poor reactivity of the existing preparation method. 2 Catalyst preparation method, the prepared cerium oxide catalyst with exposed high active sites, has excellent performance in synergistic plasma catalytic oxidation of VOCs and other reactions

Method used

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  • Cerium-based metal organic framework derivative material with synergistic effect with low-temperature plasma as well as preparation method and application of cerium-based metal organic framework derivative material
  • Cerium-based metal organic framework derivative material with synergistic effect with low-temperature plasma as well as preparation method and application of cerium-based metal organic framework derivative material
  • Cerium-based metal organic framework derivative material with synergistic effect with low-temperature plasma as well as preparation method and application of cerium-based metal organic framework derivative material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 8.6844g Ce(NO 3 ) 3 ·6H 2 O and 4.2000g 1,3,5-H 3 BTC was added to 100 mL of deionized water, and stirred at room temperature at a stirring rate of 500 rpm until completely dissolved. Then the two precursor solutions were mixed, 200 mL of deionized water and 400 mL of absolute ethanol were added in sequence, and the mixture was stirred at room temperature for 30 min, and then left to stand for 1 h. The solution after standing was centrifuged at 4000 rpm to obtain a white solid product, which was then centrifuged and washed three times with deionized water, and vacuum-dried at 60° C. for 12 hours. Ce-BTC (sacrificial template) was obtained by grinding as a white solid powder. Then in the air at a rate of 1 °C / min, the temperature program was raised from room temperature to 250 °C, and the Ce-BTC was heat-treated for 6 h to obtain CeO 2 -250 catalyst.

Embodiment 2

[0031] The specific steps of Example 2 are basically the same as those of Example 1, except that the heat treatment temperature is changed from 250°C to 300°C. Weigh 8.6844g Ce(NO 3 ) 3 ·6H 2 O and 4.2000g1,3,5-H 3BTC was added to 100 mL of deionized water, and stirred at room temperature at a stirring rate of 500 rpm until completely dissolved. Then the two precursor solutions were mixed, 200 mL of deionized water and 400 mL of absolute ethanol were added in sequence, and the mixture was stirred at room temperature for 30 min, and then left to stand for 1 h. The solution after standing was centrifuged at 4000 rpm to obtain a white solid product, which was then centrifuged and washed three times with deionized water, and vacuum-dried at 60° C. for 12 hours. Ce-BTC was obtained as a white solid powder by grinding. Then, the temperature program was raised from room temperature to 300 °C at a rate of 1 °C / min in air, and Ce-BTC was heat-treated for 6 h to obtain CeO 2 -300 ...

Embodiment 3

[0034] The specific steps of Example 3 are basically the same as those of Example 1, except that the heat treatment temperature is changed from 250°C to 400°C. Weigh 8.6844g Ce(NO 3 ) 3 ·6H 2 O and 4.2000g1,3,5-H 3 BTC was added to 100 mL of deionized water, and stirred at room temperature at a stirring rate of 500 rpm until completely dissolved. Then the two precursor solutions were mixed, 200 mL of deionized water and 400 mL of absolute ethanol were added in sequence, and the mixture was stirred at room temperature for 30 min, and then left to stand for 1 h. The solution after standing was centrifuged at 4000 rpm to obtain a white solid product, which was then centrifuged and washed three times with deionized water, and vacuum-dried at 60° C. for 12 hours. Ce-BTC was obtained as a white solid powder by grinding. Then heat the Ce-BTC for 6 h in the air from room temperature to 400 °C at a rate of 1 °C / min to obtain CeO 2 -400 Catalyst.

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Abstract

The invention discloses a cerium-based metal organic framework derivative material with a synergistic effect with low-temperature plasma and an application method of the cerium-based metal organic framework derivative material. According to the method, the advantage that the morphological structure of a metal organic framework material (MOFs) is adjustable and controllable is utilized, a cerium-based sacrificial template (Ce-BTC) is synthesized through a room-temperature self-assembly method, then the structure and properties of the cerium-based material are modulated by controlling the roasting temperature, and the catalyst with high specific surface area and multiple pore channels is prepared. When the catalyst is applied to a plasma field, mass transfer and reaction of high-activity species and reactant molecules in the plasma field in the catalyst are facilitated, and a synergistic effect with plasma is achieved. The method has the advantages of mild preparation conditions, no need of adding other surfactants or template agents and the like, simplicity in operation, low cost and facilitation of realization of industrial large-scale production, and can be applied to the fields of volatile organic compound purification and the like under the synergistic effect with plasmas.

Description

technical field [0001] The invention belongs to the technical field of air pollution control and chemical production, and in particular relates to a cerium-based metal-organic framework derivative material synergistic with low-temperature plasma and an application method thereof. Background technique [0002] Volatile organic compounds (VOCs) form near-surface photochemical smog, ozone (O 3 ) and fine particulate matter (PM 2.5 ) and other important precursors of atmospheric compound pollutants, the massive emission of VOCs has led to frequent atmospheric compound pollution incidents in recent years, which have seriously affected regional air environment quality and human health. The sources of volatile organic compounds include natural sources and man-made sources. Among them, VOCs emitted by industrial sources account for about 50% of man-made sources, mainly from chemical, packaging and printing, furniture manufacturing and other industries, and are the key areas of VOCs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J31/22B01J35/10C08G83/00B01D53/86B01D53/44B01D53/88B01D53/32C01F17/10C01F17/235
CPCB01J31/1691B01J31/223B01J31/26C08G83/008B01D53/8687B01D53/88B01D53/44B01D53/32C01F17/10C01F17/235B01D2257/708C01P2002/72C01P2004/03C01P2004/62B01D2259/818B01J2531/38B01J35/60
Inventor 吴军良毛梦绮
Owner SOUTH CHINA UNIV OF TECH
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