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Adsorbent for removing nitric oxide in fluid as well as preparation method and application of adsorbent

A technology of nitrogen oxides and adsorbents, applied in the field of adsorbents for removing nitrogen oxides in fluids, can solve the problem of low removal efficiency of nitrogen oxides, achieve strong selective adsorption of nitrogen oxides, good adsorption Performance, the effect of controlling the crystal form

Active Publication Date: 2021-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is to provide a new adsorbent for removing nitrogen oxides in fluids and its Preparation method and use

Method used

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  • Adsorbent for removing nitric oxide in fluid as well as preparation method and application of adsorbent
  • Adsorbent for removing nitric oxide in fluid as well as preparation method and application of adsorbent
  • Adsorbent for removing nitric oxide in fluid as well as preparation method and application of adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Preparation of Solution A: Dissolve nickel nitrate, magnesium nitrate and ferric nitrate in deionized water at room temperature in a molar ratio of 5:1:2, stir well until clear, add 300mL polyethylene glycol solution with a concentration of 5wt%, and stir 10mins. Preparation of solution B: Dissolve sodium hydroxide in deionized water at room temperature and stir until clear. Solution B was rapidly added dropwise into solution A until the pH of the mixed solution reached 8.5, and stirring was continued at room temperature for 2 h to obtain mixture C. The mixture C was placed in a crystallization tank and subjected to hydrothermal treatment at 95° C. for 5 hours. The product was filtered, washed with deionized water, dried in an oven at 120°C for 10 hours, and calcined in a muffle furnace at 450°C for 4 hours. The product obtained was the adsorbent product A.

[0045] Add 20g of the adsorbent A prepared above to 1L aqueous solution containing 500ppm nitric oxide and nit...

Embodiment 2

[0047] Preparation of solution A: Dissolve nickel nitrate, magnesium nitrate and ferric nitrate in deionized water at room temperature at a molar ratio of 3:3:2, stir well until clear, add 300mL of a solution with a concentration of 5wt% polyethylene glycol, and disperse 10mins. Preparation of solution B: Dissolve sodium hydroxide in deionized water at room temperature and stir until clear. Solution B was rapidly added dropwise into solution A until the pH of the mixed solution reached 8.5, and stirring was continued at room temperature for 2 h to obtain mixture C. The mixture C was placed in a crystallization tank and subjected to hydrothermal treatment at 95° C. for 5 hours. The product was filtered, washed with deionized water, dried in an oven at 120°C for 10 hours, and calcined in a muffle furnace at 550°C for 2 hours. The product obtained was the adsorbent product B.

[0048] Add 20g of the adsorbent B prepared above to 1L aqueous solution containing 300ppm nitrous oxi...

Embodiment 3

[0050] Preparation of solution A: Dissolve nickel nitrate, magnesium nitrate and ferric nitrate in deionized water at room temperature at a molar ratio of 1:5:2, stir well until clear, add 100mL of 2wt% urea solution, and disperse for 10mins. Preparation of solution B: Dissolve sodium hydroxide in deionized water at room temperature and stir until clear. Solution B was rapidly added dropwise into solution A until the pH of the mixed solution reached 8.5, and stirring was continued at room temperature for 2 h to obtain mixture C. The mixture C was placed in a crystallization tank and subjected to hydrothermal treatment at 95° C. for 5 hours. The product was filtered, washed with deionized water, dried in an oven at 120°C for 10 hours, and calcined in a muffle furnace at 500°C for 4 hours. The obtained product was adsorbent product C.

[0051] Add 20g of the above-prepared adsorbent C to 1L of aqueous solution containing 200ppm nitrous oxide and nitric oxide, stir fully at room...

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Abstract

The invention discloses an adsorbent for removing nitric oxide in fluid as well as a preparation method and application of the adsorbent. The composition of the adsorbent is Ni<x> Mg<6-x>Fe<2>O<9> or Ni<x>Mg<6-x> Al<2>O<9>, wherein x is equal to 1-6. The preparation method of the adsorbent comprises the following steps of: dropwise adding an alkaline solution into a solution containing nickel, magnesium and iron or aluminum to carry out precipitation reaction, and then carrying out hydrothermal crystallization, drying, roasting and the like to obtain the adsorbent. The adsorbent has the characteristics of high efficiency of removing nitrogen oxide in fluid, simple preparation method, environment-friendly and pollution-free production process, simple operation and the like.

Description

technical field [0001] The invention relates to an adsorbent for removing nitrogen oxides (NOx) in fluid and a preparation method thereof. Background technique [0002] Among the various challenges faced by human society, global warming caused by the greenhouse effect is one of the most serious issues. Global warming has seriously threatened the survival and continuation of human beings and other species. Although N 2 The greenhouse effect of O only accounts for about 6% of the total, but because it can persist in the atmosphere for up to 120 years, its potential greenhouse effect is about 310 times that of carbon dioxide and 4-21 times that of methane. N 2 O is a greenhouse gas that has a greenhouse effect and exacerbates global warming, N 2 O stays in the atmosphere for a long time and can be transported to the stratosphere, leading to the destruction of the ozone layer, causing the ozone hole, exposing humans and other organisms to the radiation of ultraviolet rays fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/06B01J20/30B01D15/08B01D53/02
CPCB01J20/08B01J20/06B01J20/041B01J20/3085B01J20/3078B01J20/3042B01J20/3007B01D15/08B01D53/02B01D2257/402B01D2257/404Y02C20/10Y02A50/20
Inventor 吴江邹薇任淑
Owner CHINA PETROLEUM & CHEM CORP
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