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New carbon-based adsorption material and preparation method thereof

An adsorption material, carbon-based technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of high difficulty of vacuum desorption, slow adsorption and desorption rate, low molecular capacity, etc., and achieve excellent recycling performance. , the effect of lowering desorption temperature and simple preparation method

Active Publication Date: 2017-11-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is that the existing adsorption recovery materials have poor hydrophobicity, low molecular capacity of adsorption target organic matter, high difficulty of vacuum desorption, and slow adsorption and desorption rate in high humidity environment. carbon-based adsorbent

Method used

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  • New carbon-based adsorption material and preparation method thereof
  • New carbon-based adsorption material and preparation method thereof
  • New carbon-based adsorption material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] (1) First, dissolve 20 g of resorcinol in 40 ml of formaldehyde solution with a mass fraction of 37%, then add 0.9 g of glacial acetic acid dropwise, and stir for 10 minutes until the solution is completely uniform.

[0023] (2) Subsequently, the above mixed solution was stirred at a constant speed for 72 hours in a constant temperature environment of a water bath at 80° C. to obtain an orange-red gel block.

[0024] (3) Use liquid nitrogen to rapidly pre-freeze, put into a vacuum freeze dryer at -80°C and dry for 24 hours. After the dried sample is obtained, put it into the tubular heating furnace, exhaust the air in the tube and fill it with nitrogen protective gas, the gas velocity is 50 sccm, and then the temperature in the reaction furnace is raised to 750 °C at a heating rate of 5 °C / min for 3 hours. During the period, nitrogen gas was continuously fed;

[0025] (4) Then the temperature was raised to 900°C at 5°C / min and kept for 5 hours, during which carbon diox...

Embodiment 2

[0031] (1) First, dissolve 115g of resorcinol and 170g of formaldehyde in 300ml of deionized water, mix thoroughly, then add 4g of glacial acetic acid, and stir for 15 minutes to obtain a mixed solution.

[0032] (2) Subsequently, the above mixed solution was stirred at a constant speed for 24 hours in a constant temperature environment of a water bath at 80° C. to obtain an orange-red gel block.

[0033] (3) Use liquid nitrogen to rapidly pre-freeze, put into a vacuum freeze dryer at -80°C and dry for 24 hours. After the dried sample is obtained, put it into a tubular heating furnace, and under the protection of a nitrogen atmosphere with a gas velocity of 50 sccm, raise the temperature in the tubular furnace to 800 °C at a rate of 5 °C / min for 3 hours, and keep the nitrogen gas continuously flowing during the heating period ;

[0034] (4) Stop the nitrogen flow and replace it with carbon dioxide, keep the gas velocity constant, and at the same time raise the temperature to ...

Embodiment 3

[0042] (1) First, dissolve 12 g of resorcinol and 18 g of formaldehyde in 95 ml of deionized water, mix thoroughly, then add 0.45 g of glacial acetic acid, and stir for 20 minutes to obtain a mixed solution.

[0043](2) Subsequently, the above mixed solution was stirred at a constant speed for 48 hours in a constant temperature environment of a water bath at 90° C. to obtain an orange-red gel block.

[0044] (3) Use liquid nitrogen to rapidly pre-freeze, put into a vacuum freeze dryer at -85°C and dry for 36 hours. After the dried sample is obtained, put it into a tubular heating furnace, and under the protection of a nitrogen atmosphere with a gas velocity of 50 sccm, raise the temperature in the tube furnace to 600 °C at a rate of 7 °C / min for 6 hours, and keep the nitrogen gas continuously flowing during the heating period ;

[0045] (4) Stop the nitrogen flow and replace it with carbon dioxide, keep the gas velocity constant, and at the same time raise the temperature to ...

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Abstract

The invention relates to a new carbon-based adsorption material and a preparation method thereof, mainly solving the problem that an adsorption recovery material is poor in hydrophobicity, low in capacity of adsorbing target organic matter molecules, severe in difficulty of vacuum desorption, and low in adsorption / desorption rate in a high-humidity environment. According to the preparation method, resorcinol or m-trihydroxybenzene and gracial acetate acid are taken as reaction raw materials, a formaldehyde aqueous solution is taken as a reaction solvent, and the high-specific-surface-area carbon-based adsorption material is prepared through a process of sol gel freeze drying and carbonization activation, so that the problem is well solved. The new carbon-based adsorption material can be used in engineering material technology.

Description

technical field [0001] The invention relates to a novel carbon-based adsorption material and a preparation method thereof. Background technique [0002] Crude oil needs to go through multiple storage, transportation, loading and unloading processes in the process from mining, refining, and finally to the consumer market in the form of refined oil, which will inevitably cause volatilization loss or even leakage of oil products, resulting in energy waste and poor oil quality. decline, environmental pollution and even safety hazards. Adsorption separation technology, as a mature principle and the most cost-effective storage and transportation loss control method, is widely used in the fields of oil and gas recovery by adsorption method. However, my country has recently begun to implement the "Petroleum Refining Industry Pollutant Discharge Standard" (GB31570-2015) and "Petrochemical Industry Pollutant Discharge Standard" (GB31571-2015), which require non-methane total hydrocar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/336C01B32/318
CPCC01P2004/03C01P2006/12C01P2006/14C01P2006/16C01P2006/17
Inventor 赵宇鑫牟小冬王林张卫华张健中
Owner CHINA PETROLEUM & CHEM CORP
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