Nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and preparation method thereof

A catalytic activity, blast furnace slag technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high investment in degradation equipment and degradation operation costs, waste of titanium resources, and low application value. , to achieve the effect of improving visible light catalytic activity, good social and economic benefits, and no secondary pollution

Inactive Publication Date: 2013-01-09
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former mainly uses titanium-containing blast furnace slag as the raw material for extracting titanium. The disadvantage is that the separation rate is low, the cost is high, and it is easy to cause new pollution; the latter includes the overall use of building materials as raw materials and ecological utilization methods, and the waste of titanium as building materials raw materials resources, and the preparation of photocatalysts that are currently mainly concentrated in the ultraviolet region as ecological ut...

Method used

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  • Nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and preparation method thereof
  • Nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and preparation method thereof
  • Nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] Visible light catalytically active nitrogen organically modified titanium-containing blast furnace slag catalyst, the chemical composition is based on mass percentage, nitrogen element 7.5wt%, the balance is titanium-containing blast furnace slag components and impurities, and the mass ratio of nitrogen to titanium of the catalyst is 0.3:1.

[0037] After crushing the titanium-containing blast furnace slag, the titanium-containing blast furnace slag powder with a diameter of less than 1 mm is obtained through screening;

[0038] Mix and grind industrial urea with crushed titanium-containing blast furnace slag powder. The mixing ratio is based on the mass of nitrogen in urea accounting for 7.5wt% of the mass of the mixed powder, wherein the mass ratio of nitrogen and titanium is 0.3:1, and the titanium-containing blast furnace slag contains titanium dioxide. 25%;

[0039] Add absolute ethanol to the mixed powder, ultrasonically disperse for 50 minutes; transfer the conta...

Embodiment 2

[0051] Visible light catalytically active nitrogen organically modified titanium-containing blast furnace slag catalyst, the chemical composition is by mass percentage, nitrogen element 15wt%, the balance is titanium-containing blast furnace slag components and impurities, and the mass ratio of nitrogen to titanium of the catalyst is 7.5:1.

[0052] After crushing the titanium-containing blast furnace slag, the titanium-containing blast furnace slag powder with a diameter of less than 0.5mm is obtained through screening;

[0053] Mix and grind industrial urea with crushed titanium-containing blast furnace slag powder. The mixing ratio is based on the nitrogen element in urea accounting for 15wt% of the mixed powder mass, wherein the mass ratio of nitrogen and titanium is 7.5:1, and the titanium-containing blast furnace slag contains titanium dioxide 2 %;

[0054] Add absolute ethanol to the mixed powder, ultrasonically disperse for 10 minutes; transfer the container containing...

Embodiment 3

[0063] Visible light catalytically active nitrogen organically modified titanium-containing blast furnace slag catalyst, the chemical composition is based on mass percentage, nitrogen element 20wt%, the balance is titanium-containing blast furnace slag components and impurities, and the mass ratio of nitrogen to titanium in the catalyst is 10:1.

[0064] After crushing the titanium-containing blast furnace slag, the titanium-containing blast furnace slag powder with a diameter of less than 1 mm is obtained through screening;

[0065] Mix and grind industrial urea with crushed titanium-containing blast furnace slag powder. The mixing ratio is based on the nitrogen element in urea accounting for 20wt% of the mixed powder mass, wherein the mass ratio of nitrogen and titanium is 1.3:1, and the titanium-containing blast furnace slag contains titanium dioxide 16 %;

[0066] Add absolute ethanol to the mixed powder, ultrasonically disperse for 30 minutes; transfer the container conta...

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Abstract

The invention belongs to the field of a catalyst and particularly relates to a nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and a preparation method thereof. The preparation method comprises the steps of after crushing titanium-containing blast furnace slag, mixing the crushed titanium-containing blast furnace slag with industrial urea and milling; adding absolute ethyl alcohol into mixed powder to carry out ultrasonic dispersion; then agitating and drying and conducting ball milling; pressing the mixture into a sheet and roasting under an oxidization atmosphere; roasting and cooling; and milling the product to be the diameter of 0.5-50 microns to obtain the nitrogen organic modified titanium-containing blast furnace slag catalyst with the visible light catalytic activity. The nitrogen organic modified titanium-containing blast furnace slag catalyst has strong light absorption and light responses under the stimulation of visible light with the wavelength range of 400-700nm, so as to realize the full-amount absorption of the visible light, and the visible light catalytic activity of the nitrogen organic modified titanium-containing blast furnace slag catalyst is obviously improved.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a visible light catalytic active nitrogen organically modified titanium-containing blast furnace slag catalyst and a preparation method. Background technique [0002] The iron and steel industry is an industry with high energy consumption and high pollution. During the rapid development of the iron and steel industry, on the one hand, it will consume a lot of resources and energy, and on the other hand, it will inevitably produce a large amount of solid waste, which will seriously damage the ecological environment and affect our society. Establish a resource-saving and environment-friendly society. my country's Panxi region is rich in vanadium-titanium magnetite resources. After the vanadium-titanium iron concentrate is smelted in a blast furnace, vanadium-containing molten iron and titanium-containing blast furnace slag are obtained. Due to the TiO in the raw materials 2 Al...

Claims

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Application Information

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IPC IPC(8): B01J21/06C02F1/30C02F1/70
CPCY02W10/37
Inventor 雷雪飞薛向欣杨合袁仕华
Owner 东北大学秦皇岛分校
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