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Application of plasma modified catalyst in removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride

A technology of plasma and catalyst, which is applied in the field of ion modified catalysts, can solve the problems of simultaneous removal, small adsorption capacity, and low adsorption efficiency, and achieve excellent catalytic activity, high adsorption efficiency, and long-lasting effects

Inactive Publication Date: 2021-04-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing adsorbents have the problems of low adsorption efficiency, small adsorption capacity, and easy deactivation, and cannot remove H at the same time. 2 S.PH 3 , AsH 3 , currently, the use of plasma-modified catalysts for the simultaneous adsorption and removal of H 2 S.PH 3 and AsH 3 The method has not been reported

Method used

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  • Application of plasma modified catalyst in removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride
  • Application of plasma modified catalyst in removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride
  • Application of plasma modified catalyst in removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride

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Embodiment 1

[0025] Embodiment 1 (unmodified embodiment)

[0026] Weigh 1.0g of Cu(NO 3 ) 2 Dissolve in 8.3mL of distilled water, then weigh 0.5g of trimesic acid and add it to the mixture of absolute ethanol and N,N-dimethylformamide (8.3mL of absolute ethanol and 8.3mL of DMF). After mixing the two solutions, place them in an ultrasonic instrument, ultrasonicate for 30 minutes at 25°C (ultrasonic frequency is 35kHz), fully dissolve, transfer the ultrasonically mixed solution to a 100mL polytetrafluoroethylene-lined stainless steel self-pressurized reactor, The reaction kettle was placed in a programmed temperature-controlled oven. The temperature of the oven was raised from room temperature to 85 °C at a rate of 1 °C / min. After reacting at 85 °C for 20 hours, the temperature was naturally lowered to room temperature, and the reaction solution was suction-filtered to obtain crystals Take 50% ethanol aqueous solution and wash with suction for 4 times. After washing, the product is dried ...

Embodiment 2

[0028] Weigh 1.0 g of Cu(NO 3 )2 Dissolve in 8.3mL of distilled water, then weigh 0.5g of trimesic acid and add it to the mixture of absolute ethanol and N,N-dimethylformamide (8.3mL of absolute ethanol and 8.3mL of DMF). The above two solutions are mixed and placed in an ultrasonic instrument, ultrasonicated at 25°C for 30 minutes (ultrasonic frequency is 35kHz), fully dissolved, and the ultrasonically mixed solution is transferred to a 100mL polytetrafluoroethylene-lined stainless steel self-pressurized reaction kettle , and put the reaction kettle in a programmed temperature-controlled oven. The temperature of the oven was raised from room temperature to 85 °C at a rate of 1 °C / min, and then reacted at 85 °C for 20 hours and then cooled down to room temperature naturally. The obtained crystals were filtered and washed 4 times in 50% ethanol aqueous solution. After washing, the product was dried in an oven at 60°C for 12 hours, and then vacuumized at 160°C for 5 hours to obt...

Embodiment 3

[0031] Weigh 1.0g of Cu(NO 3 ) 2 Dissolve in 8.3mL of distilled water, then weigh 0.5g of trimesic acid and add it to the mixture of absolute ethanol and N,N-dimethylformamide (8.3mL of absolute ethanol and 8.3mL of DMF). The two solutions were mixed and placed in an ultrasonic instrument, ultrasonicated at 30°C for 30 minutes (ultrasonic frequency 35kHz), fully dissolved, and the ultrasonically mixed solution was transferred to a 100mL polytetrafluoroethylene-lined stainless steel self-pressurized reactor. The reaction kettle was placed in a programmed temperature-controlled oven, and the temperature of the oven was raised from room temperature to 85 °C at 2 °C / min, and then reacted at 90 °C for 22 hours, and then cooled down to room temperature naturally, and the reaction solution was suction-filtered to obtain The crystals were filtered and washed three times in 50% ethanol aqueous solution. After washing, the product was dried in an oven at 80°C for 12 hours, and then vac...

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Abstract

The invention discloses an application of a plasma modified catalyst in removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride, which comprises the following steps: introducing a gas containing hydrogen sulfide, hydrogen phosphide and arsenic hydride into a reactor filled with the plasma modified catalyst, and removing hydrogen sulfide, hydrogen phosphide and arsenic hydride at 60-90 DEG C; the MOFs generate more unsaturated metal active sites and a large number of active free radicals through low-temperature plasma discharge, and the prepared plasma modified catalyst is applied to removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride, has a good removal effect at a low temperature, can be widely applied to simultaneous removal of H2S, PH3 and AsH3 in various gas sources. The method is suitable for industrial application and market promotion.

Description

technical field [0001] The present invention relates to a new application of a plasma modified catalyst, that is, it removes hydrogen sulfide (H 2 S), phosphine (PH 3 ), arsine (AsH 3 ) and belongs to the field of catalyst preparation and application. Background technique [0002] h 2 S and PH 3 Widely present in the atmospheric environment, it will cause serious pollution and harm to the environment and human body when it is discharged into the atmospheric environment during industrial production and use. h 2 S is easy to cause catalyst poisoning and deactivation, and has a corrosive effect on industrial production equipment. In addition, H emitted to the atmosphere without treatment 2 S can form sulfur dioxide, promote photochemical reactions, and eventually transform into sulfate aerosols, causing serious environmental problems. There will also be AsH in the flue gas emitted by industrial production 3 the presence of AsH 3 It is a colorless, garlic-smelling, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J35/10B01J37/34B01D53/86B01D53/52B01D53/46
Inventor 李凯韩万宁孙鑫王飞王驰郝星光
Owner KUNMING UNIV OF SCI & TECH
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