Attapulgite/carbon nitride/polyaniline desulfurization photocatalyst and preparation method thereof

A technology of photocatalyst and carbon nitride, which is applied in the field of fuel oil desulfurization, can solve the problem of high cost, prevent superimposition and agglomeration, and improve the effect of photoresponsive area

Active Publication Date: 2015-12-30
常州纳欧新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the photocatalysts used for desulfurization of fuel oil are represented by Bi 2 WO 6 , Pt-RuO 2 、TiO 2 Mainly such as metal oxides, the cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Add 5.0 kg of urea to 12.5 kg of thick attapulgite slurry with a mass percentage of 40%, mechanically stir until the mixture is uniform, and then place the resulting mixed slurry at a temperature of 520°C for 6 hours , That is, the attapulgite / carbon nitride binary composite is prepared;

[0021] 2. Take 2.0 kilograms of the attapulgite / carbon nitride composite obtained in step 1, and add it to 40.0 kilograms of deionized water. After ultrasonic dispersion for 30 minutes, add dropwise a hydrochloric acid solution with a molar concentration of 2.0 moles / liter to adjust the system The pH value is 4; then add 0.6 kg of aniline monomer, stir for 40 minutes, keep the system temperature at 5 ℃, drop 1.6 liters of ammonium persulfate solution with a molar concentration of 4 moles / liter, after the addition is complete, stir to react 1 After hours, suction filtration, washing, and drying at a temperature of 80°C, the attapulgite / carbon nitride / polyaniline ternary composite photo...

Embodiment 2

[0023] 1. Add 5.0 kg of thiourea to 5.0 kg of thick attapulgite slurry with a mass percentage of 25%, mechanically stir until it is uniformly mixed, and then place the resulting mixed slurry at a temperature of 570°C for heat preservation 2 Hours, the attapulgite / carbon nitride binary composite is prepared;

[0024] 2. Take 2.0 kilograms of the attapulgite / carbon nitride composite obtained in step 1, and add it to 10.0 kilograms of deionized water, ultrasonically disperse for 60 minutes, then add dropwise a hydrochloric acid solution with a molar concentration of 1 mole / liter to adjust the system The pH value is 2; then 0.2 kg of aniline monomer is added, and after stirring for 20 minutes, keeping the system temperature at 4°C, drop 4.3 liters of ammonium persulfate solution with a molar concentration of 1 mol / liter. After the addition is complete, stir for reaction 2. After hours, suction filtration, washing, and drying at a temperature of 60°C, the attapulgite / carbon nitride / po...

Embodiment 3

[0026] 1. Add 5.0 kg of dicyandiamide to 7.1 kg of thick attapulgite slurry with a mass percentage of 35%, mechanically stir until the mixture is uniform, and then place the resulting mixed slurry at a temperature of 545°C for heat preservation In 4 hours, the attapulgite / carbon nitride binary composite is prepared;

[0027] 2. Take 2.0 kg of the attapulgite / carbon nitride composite obtained in step 1 and add it to 20.0 kg of deionized water. After ultrasonic dispersion for 45 minutes, add dropwise a hydrochloric acid solution with a molar concentration of 1.5 mol / L to adjust the system The pH value is 3; then 0.4 kg of aniline monomer is added, and after stirring for 30 minutes, keeping the system temperature at 2.5°C, 2.6 liters of ammonium persulfate solution with a molar concentration of 2.5 moles / liter is added dropwise, after the addition is complete, the reaction is stirred for 1.5 After hours, suction filtration, washing, and drying at a temperature of 70°C, the attapulgi...

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PUM

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Abstract

The invention belongs to the field of fuel desulfurization and particularly relates to a compound photocatalyst taking attapulgite as a carrier and a preparation method of the photocatalyst. Firstly, a raw material rich in carbon and nitrogen is added to attapulgite slurry to be mechanically stirred, then the mixture is kept at the temperature of 520-570 DEG C, and an attapulgite / carbon nitride binary compound is prepared; polyaniline is assembled on the obtained attapulgite / carbon nitride compound carrier, and the attapulgite / carbon nitride / polyaniline ternary compound photocatalyst is prepared. The prepared compound photocatalyst involves no metal or metal oxide catalysts, cannot cause secondary pollution to oil products and has the advantages of environment friendliness and the like.

Description

Technical field [0001] The invention belongs to the field of fuel desulfurization, and specifically relates to a composite photocatalyst using attapulgite as a carrier and a preparation method thereof. Background technique [0002] With the rapid increase of some of my country's high energy consumption, high pollution production capacity and motor vehicles, my country's air pollution has become increasingly serious, and the smog index remains high. The sulfur oxides (SO x ) Is one of the main causes of smog. Therefore, fuel oil must be desulfurized before use. At present, the main technologies for reducing sulfur content in oil products include: catalytic hydrogenation, adsorption desulfurization, biological desulfurization and oxidative desulfurization. Hydrodesulfurization mainly uses Co, Mo and Ni-based transition metals and their compounds as catalysts, but the effect of removing thiophene sulfides is not ideal, and the investment and operating costs of the equipment are hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J20/26B01J20/30C10G29/20
Inventor 姚超左士祥吴凤芹陈瑶刘文杰李霞章毛辉麾罗士平
Owner 常州纳欧新材料科技有限公司
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