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Material for efficiently removing basic nitrogen compounds in oils

A technology of nitrides and modified materials, which is applied in the petroleum industry, refined hydrocarbon oil, chemical instruments and methods, etc., can solve the problems that there are no literatures to discuss the adsorption and application of nitrogen-containing compounds in graphite oxide, and achieve low price, easy regeneration, and source wide range of effects

Inactive Publication Date: 2014-12-24
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far there is no literature on the application of graphite oxide to the adsorption of nitrogen-containing compounds in oil.

Method used

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  • Material for efficiently removing basic nitrogen compounds in oils
  • Material for efficiently removing basic nitrogen compounds in oils
  • Material for efficiently removing basic nitrogen compounds in oils

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Oxidation treatment of original activated carbon AC: Mix 5 g of commercial activated carbon AC sample with 100 ml of ammonium persulfate sulfuric acid solution with a concentration of 2 mol / L, and stir at 60 degrees for 3 hours. Separation by suction filtration, fully washed with deionized water to neutrality, and drying the sample in a 100-degree vacuum oven overnight to obtain oxidized activated carbon OAC with oxygen-containing functional groups on the surface;

Embodiment 2

[0041] Treatment of raw graphite GF: Add 69ml H2SO4 into the Erlenmeyer flask containing 3.0g graphite GF and 1.5g NaNO3 solid, stir evenly under cooling, slowly add 9.0g KMnO4 (make sure the temperature does not exceed 20 degrees), and continue stirring at room temperature for 1h. Then slowly add 140ml of deionized water, stir for 15min, add 420ml of deionized water again to dilute, add 30% H2O2 solution drop by drop until golden yellow appears in the solution, cool to room temperature, let stand overnight, discard the supernatant, and remove the lower layer The viscous liquid was dialyzed for 72 hours and then taken out, and then entered into the spray dryer with a peristaltic pump, at a rate of 2ml / min, and the temperature of the feed port was 120-140°C for spray drying to obtain oxidized modified graphite GO;

Embodiment 3

[0043] Characterization of the physical and chemical properties of the adsorption material: The elemental analysis data in Table 1 show that the oxygen content of the oxidized materials OAC and GO is significantly higher than that of the pre-oxidized materials AC and GF, and GO is slightly higher than that of OAC.

[0044] From the physical adsorption analysis data in Table 2, it can be seen that the BET specific surface area of ​​AC and OAC is significantly higher than that of GF and GO. After oxidation, the BET specific surface area of ​​OAC is significantly smaller than that of AC, mainly due to the well-developed pore structure in the AC material, which causes the collapse of the pore structure during the oxidation process. However, the BET specific surface area of ​​GF is similar to that of GO, which is due to the underdeveloped mesopore structure of GF materials.

[0045] Table 1. Elemental analysis data for four adsorbent materials

[0046]

[0047] Table 2. Spe...

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Abstract

The invention discloses an adsorbing material for efficiently adsorbing and removing nitrogen. Firstly, modified graphite oxide is prepared by using an oxidizing and drying method, and the physical and chemical properties of the modified graphite oxide are qualitatively and quantificationally analyzed precisely by adopting different expression means, and then, the adsorbent is used for testing adsorption behaviors for quinoline and methyl substituted quinoline in different solvents. The adsorption capacity of the adsorbent adopted by the invention on quinoline mainly depends on high oxygen content of the adsorbent and a carboxyl functional group produced in an oxidizing process of the adsorbent, so that the adsorption capacity of the adsorbent on quinoline and methyl substituted quinoline in oils is ultrahigh; besides, according to the experimental results of influences of different solvents on the absorption capacity of the adsorbent, the adsorbent does not like the conventional oxide activated carbon adsorbent the high adsorption capacity of which is easily affected by other components in the oil, so that the prospect that the adsorbent can be used for adsorption, denitrification and refining of commercial oils on a large scale is further expanded.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to a material for efficiently removing basic nitrogen compounds in oil products. Background technique [0002] At the beginning of 2013, large-scale and long-term smog appeared in the central and eastern regions of my country, and the PM2.5 value in many cities seriously exceeded the standard. The researchers found a large number of nitrogen-containing organic particles in the smog, and these substances were one of the main components of the "photochemical smog" in Los Angeles in the last century. Sulfur dioxide and nitrogen oxides from vehicle exhaust emissions become the main sources of such nitrogen-containing organic particles. The quality of the oil used by motor vehicles, especially the content of sulfide and nitrogen compounds in the oil, has a decisive impact on the amount of vehicle exhaust pollutants. Therefore, reducing the content of sulfide an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00B01D15/10
Inventor 李娜陈晓东冯晓尚超
Owner SUZHOU UNIV
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