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Fe-pani/zeolite catalyst and preparation method thereof

A zeolite catalyst and zeolite technology, which are used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of unrecyclable catalysts, inactivity of Fenton technology, etc., and achieve high reusability. , strong catalytic degradation effect, the effect of improving the transmission efficiency

Active Publication Date: 2020-07-28
浙江永电环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of Fe-PANI / zeolite catalyst and preparation method thereof, to solve the defective problems such as Fenton's technology is inactive under neutral condition and catalyst can't be recycled

Method used

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  • Fe-pani/zeolite catalyst and preparation method thereof
  • Fe-pani/zeolite catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 (the ratio of the amount of substance of oxidizing agent and aniline is 0.05:1)

[0035] Add 1.9mL of deionized water and 0.093g (1mmol) of aniline to the hydrothermal reaction kettle, add 5.00g of zeolite in the aniline-water solution after ultrasonic oscillation for 25min, and shake in a shaker for 1min. Add 0.0135g (0.05mmol) FeCl 3 ·6H 2 O, after sealing, place it in a 60°C blast drying oven, keep it warm for 24 hours, take it out and place it at room temperature and cool it down. Then the zeolite was taken out, washed with deionized water and ethanol, then soaked until the soaking solution was neutral, drained and dried in an oven at 60°C to obtain the Fe-PANI / zeolite catalyst.

Embodiment 2

[0036] Embodiment 2 (the amount ratio of the substance of oxidizing agent and aniline is 3:1)

[0037] Add 19.9mL of deionized water and 0.1mL of aniline to the hydrothermal reaction kettle, and then add 5.00g of zeolite in the aniline-water solution after ultrasonic oscillation for 5 minutes, and shake in a shaker for 30 minutes. Add 0.81g (3mmol) FeCl 3 ·6H 2 O, after sealing, place it in a 130°C blast drying oven, keep it warm for 12 hours, take it out and place it at room temperature and cool it down. Then the zeolite was taken out, washed with deionized water and ethanol, then soaked until the soaking solution was neutral, drained and dried in an oven at 60°C to obtain the Fe-PANI / zeolite catalyst. Infrared spectroscopy and X-ray photoelectron spectroscopy analysis proved that polyaniline and Fe(Ⅱ / Ⅲ) were successfully supported on the surface of zeolite.

Embodiment 3

[0038] Embodiment 3 (the ratio of the amount of substance of oxidizing agent and aniline is 1:1)

[0039] Add 49.9mL of deionized water and 0.1mL of aniline to the hydrothermal reaction kettle, and then add 25.00g of zeolite in the aniline-water solution after ultrasonic oscillation for 60min, and shake in the shaker for 300min. Add 0.27g (1mmol) FeCl 3 ·6H 2 O, after sealing, put it in a blast drying oven at 200°C, keep it warm for 3 hours, take it out and place it at room temperature and cool it down. Then the zeolite was taken out, washed with deionized water and ethanol, then soaked until the soaking solution was neutral, drained and dried in an oven at 60°C to obtain the Fe-PANI / zeolite catalyst.

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Abstract

The invention discloses a Fe-PANI / zeolite catalyst and a preparation method thereof. The preparation method comprises the steps of soaking zeolite in an aniline-water solution, polymerizing aniline byvirtue of the oxidability of FeCl3 at a high temperature, and doping PANI with Fe(III) in the solution, Fe(II) generated through reduction and H<+> generated through hydrolysis of FeCl3, so as to prepare the Fe-PANI / zeolite catalyst. According to the preparation method, zeolite, aniline and FeCl3 are taken as the raw materials, water is taken as a solvent, the polymerization of aniline is promoted through the oxidability of FeCl3 at a high temperature, meanwhile, PANI is doped with Fe(III), Fe(II) and H<+>, the loading process and the doping process are synchronously finished, and the reactedsolution is an acidic solution containing iron and aniline oligomers, has very low environmental hazards and can be very easily treated. PANI has very good electronic transmission performance, so that the conversion efficiency of Fe(II) and Fe(III) can be improved, and the Fenton-like degradation process of organic matters can be promoted. Besides, Fe-PANI / zeolite has very high activity when thepH value is equal to 6, is high in repeating utilization rate and is a very good Fenton-like catalyst.

Description

technical field [0001] The invention belongs to the field of chemistry and water treatment, and relates to a Fe-PANI / zeolite catalyst and a preparation method thereof. Background technique [0002] The essence of Fenton's method is ferrous ions (Fe 2+ ) and hydrogen peroxide catalyze the chain reaction to generate hydroxyl radicals, which have strong oxidation ability, and its oxidation potential is second only to fluorine, as high as 2.80V. In addition, hydroxyl radicals have high electronegativity or electrophilicity, and their electron affinity can be as high as 569.3kJ. They have strong addition reaction characteristics, so Fenton's reagent can oxidize most organic substances in water without selection, and is especially suitable for Oxidation treatment of organic wastewater that is difficult to biodegrade or general chemical oxidation is difficult to work. [0003] The traditional Fenton technology has been widely used in the treatment of refractory organic polluted w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06B01J37/10B01J37/34C02F1/72C02F101/30C02F101/34C02F101/38
CPCB01J31/069B01J37/10B01J37/343C02F1/722C02F1/725C02F2101/308C02F2101/34C02F2101/38C02F2101/40C02F2305/026
Inventor 杨鸿辉石博方喻奇
Owner 浙江永电环境科技有限公司
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