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A kind of fine desulfurizer of zinc oxide at normal temperature and its preparation method and application

A fine desulfurizer and zinc oxide technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as difficult product industrialization, complicated process, waste of anhydrous ethanol, etc., and achieve a simple and easy preparation strategy , small particle size, uniform dispersion effect

Active Publication Date: 2022-01-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second disadvantage of this method is that the preparation method is complex and time-consuming in the preparation process, such as the acquisition of zinc sol needs to go through reflux and filtration, which is not easy to industrialize the product
Furthermore, the gel alcohol washing process is likely to cause a large amount of waste of absolute ethanol and secondary pollution

Method used

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  • A kind of fine desulfurizer of zinc oxide at normal temperature and its preparation method and application
  • A kind of fine desulfurizer of zinc oxide at normal temperature and its preparation method and application
  • A kind of fine desulfurizer of zinc oxide at normal temperature and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 9mL TEOS, 7mL absolute ethanol, 1.1mL deionized water, 0.3mL dilute nitric acid (4mol / L) into a 100mL beaker, stir magnetically at room temperature for 60min, weigh 11.9g of zinc nitrate, measure 8mL of methanol, Alcohol 12mL, placed in a beaker, stirred to form a zinc nitrate solution. Slowly add the prepared zinc nitrate solution dropwise into the prepared silica sol, and continue stirring for 60 minutes to form a mixed sol. The mixed sol was placed in a vacuum oven (the vacuum degree was set to 0), and the temperature in the cavity was set to 30° C., and aged for 10 h. Then the temperature was raised to 120° C. for gel drying for 12 hours. Place the dried gel in a quartz container, then place it in a muffle furnace, turn on the heater, raise the temperature to 300°C, keep at this temperature for 120min, the heating rate is 1°C / min, and then continue to heat up to 500°C, Keep at this temperature for 120min. After roasting, let it cool down to room temperature n...

Embodiment 2

[0029] Add 9mL TEOS, 9.2% absolute ethanol, 1.5mL deionized water, 0.5mL dilute nitric acid (4mol / L) into a 100mL beaker, stir magnetically at room temperature for 120min, weigh 14.87g of zinc nitrate, measure 8.9mL of methanol, Diol 13.4mL, placed in a beaker, stirred to form a zinc nitrate solution. Slowly add the prepared zinc nitrate solution dropwise into the prepared silica sol, and continue stirring for 80 minutes to form a mixed sol. The mixed sol was placed in a vacuum oven (the vacuum degree was set to 0), and the temperature in the chamber was set to 30° C., and aged for 11 h. Then the temperature was raised to 120° C. for gel drying for 13 hours. Place the dried gel in a quartz container, then place it in a muffle furnace, turn on the heater, raise the temperature to 300°C, keep at this temperature for 120min, the heating rate is 1°C / min, and then continue to heat up to 500°C, Keep at this temperature for 180min. After roasting, let it cool down to room temperat...

Embodiment 3

[0034] Add 9mL TEOS, 12mL absolute ethanol, 2.2mL deionized water, 0.5mL dilute hydrochloric acid (4mol / L) into a 100mL beaker, stir magnetically at room temperature for 90min, weigh 29.75g of zinc nitrate, measure 20mL of methanol, Alcohol 33mL, placed in a beaker, stirred to form a zinc nitrate solution. Slowly add the prepared zinc nitrate solution dropwise into the prepared silica sol, and continue stirring for 90 minutes to form a mixed sol. The mixed sol was placed in a vacuum oven (the vacuum degree was set to 0), and the temperature in the cavity was set to 30° C., and aged for 10 h. Then the temperature was raised to 120° C. for gel drying for 13 hours. Place the dried gel in a quartz container, then place it in a muffle furnace, turn on the heater, raise the temperature to 300°C, keep at this temperature for 90min, the heating rate is 1°C / min, and then continue to heat up to 500°C, Keep at this temperature for 180min. After roasting, let it cool down to room tempe...

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Abstract

The invention discloses a refined zinc oxide desulfurizer at room temperature and its preparation method and application. The desulfurizer uses methyl orthosilicate or ethyl orthosilicate as the silicon source precursor, zinc nitrate as the zinc source precursor, ethylene glycol, One of polyols such as propylene glycol and glycerol is an organic fuel, which is obtained through a sol-gel process and simple aging, drying, and roasting processes. The key of the present invention is to control the ratio of the zinc source precursor to the polyol and the way of aging and drying. The silica network played a role in dispersing and confining ZnO growth during the synthesis. The invention has the advantages that the prepared composite nanomaterial is mainly mesoporous, the loading capacity of zinc oxide is increased to 58-80wt%, the zinc oxide is uniformly dispersed, the particle size is small, the preparation strategy is simple, and the cost is low.

Description

technical field [0001] The invention relates to a zinc oxide refined desulfurizer at room temperature, a preparation method and application. Background technique [0002] h 2 S is a common harmful acid gas with a foul smell. It generally exists in urban sewage treatment systems, and also widely exists in domestic and industrial gases such as gas. When H 2 When the concentration of S exceeds 50ppm, it will cause great harm to the human body. Hydrogen sulfide in industrial gas can also corrode pipelines, poison and deactivate catalysts, resulting in huge economic losses. SO produced after combustion X It will also cause serious pollution to the atmosphere, leading to the formation of acid rain, further threatening the environment and human health. In recent years, the country's environmental protection has become more and more intensive, and the environmental protection department's emission standards for sulfur-containing gases have become more and more stringent. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/52
CPCB01D53/52B01D53/81
Inventor 杨超樊惠玲寇佳伟梁丽彤沈芳上官炬武蒙蒙米杰
Owner TAIYUAN UNIV OF TECH
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