A kind of synthesis method and application of ionic liquid loaded porous material

A technology for ionic liquids and porous materials, which is applied in the field of synthesis of ionic liquid-loaded porous materials, and can solve problems such as cumbersome preparation methods and uneven loading of ionic liquids

Active Publication Date: 2021-11-02
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation method is cumbersome and the loading of ionic liquid is uneven

Method used

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  • A kind of synthesis method and application of ionic liquid loaded porous material
  • A kind of synthesis method and application of ionic liquid loaded porous material
  • A kind of synthesis method and application of ionic liquid loaded porous material

Examples

Experimental program
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Effect test

Embodiment 1

[0071] Heating the semi-solidified ionic liquid at a certain temperature can obtain a fluid liquid. In order to further explore the temperature of this state change, ionic liquids with different anion and cation ratios are heated with 1°C as the heating temperature unit, and Observe the change of its state, the temperature of the state change is T f Expressed, see Table 1. The results show that when Et 3 NHCl and CuCl 2 When the molar ratio is 1:1, T f =50°C, with Et 3 NHCl and CuCl 2 With the increase (>1:1) or decrease (f increase. In will Et 3 NHCl and anhydrous CuCl 2 According to a certain molar ratio, the heating temperature can be referred to as T f . Therefore, Et 3 NHCl·CuCl 2 Ionic liquids as modifiers.

[0072] Table 1 Et 3 NHCl and CuCl 2Heating temperature for the synthesis of ionic liquids with different molar ratios

[0073]

[0074] To the Et that embodiment 1 obtains 3 NHCl·CuCl 2 Ionic liquids were characterized by infrared spectroscopy, s...

Embodiment 2

[0076] Using ethanol as a dispersant, add 10g of silica gel to 200mL of absolute ethanol and stir at 50°C, add 0.506g-2.024g of Et 3 After stirring with NHCl for 1h, add 0.494g-1.976g of anhydrous CuCl 2 After stirring for 6 h, the ethanol was evaporated to dryness to obtain an in-situ bifunctional ionic liquid-modified silica gel, which was denoted as IL-SG (in-situ). The activated carbon, resin, and activated alumina adsorbents obtained by the same modification method were denoted as IL-AC (in-situ), IL-AAO (in-situ) and IL-ABS (in-situ), respectively. See Table 2 for the amount of ionic liquid-loaded porous material raw materials.

[0077] The ex-situ loading method of the bifunctional ionic liquid loaded porous material corresponding to the in situ loading method of the bifunctional ionic liquid loaded porous material, the steps are as follows:

[0078] Add 10g of silica gel into 200ml of absolute ethanol and stir, and add 1-4g of Et 3 NHCl·CuCl 2 , stirred at 50° C. f...

Embodiment 3

[0084] No. 1, No. 12 and No. 8 adsorbents obtained in embodiment 2 are characterized by SEM, see respectively image 3 , Figure 4 and Figure 5 . in, image 3 The No. 1 adsorbent is in-situ bifunctional ionic liquid-loaded silica gel IL-SG (in-situ), with a loading capacity of 10wt%. It can be seen that it still has a rich pore structure, which is similar to that of Figure 4 The No. 12 adsorbent is very similar to silica gel without loading ionic liquid, while Figure 5 The No. 8 adsorbent is the SEM image of non-situ bifunctional ionic liquid loaded silica gel IL-SG (non-in-situ), the loading capacity is 10wt%, it can be seen that its surface presents large aggregates, and some pores It was blocked by ionic liquids, indicating that the in-situ loading method can achieve more uniform dispersion of ionic liquids and maintain the porous structure of the material than the traditional loading method.

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Abstract

The invention provides a method for removing H 2 Synthesis and application of in situ bifunctional ionic liquid supported porous materials of S. In order to simplify the preparation process of the adsorbent and improve the uniformity of the ionic liquid loading, the bifunctional ionic liquid Et 3 NHCl·CuCl 2 As a modifier, using the in-situ loading technology in which the synthesis and loading of ionic liquids are completed simultaneously, the ionic liquids are loaded onto porous materials such as activated carbon, silica gel, resin and alumina with different pore structures to obtain loaded ionic liquid adsorbents. The modified method of the material can avoid the disadvantage of the liquid phase absorption of the ionic liquid, and significantly improve the H of the porous material. 2 S capture capacity has potential industrial application value in terms of economy and efficiency.

Description

technical field [0001] The invention belongs to the field of modified porous materials, and more specifically relates to a synthesis method and application of ionic liquid-loaded porous materials. [0002] technical background [0003] Natural gas is an efficient and clean energy and an important chemical raw material. It is clean, economical, convenient to transport and widely used. It has become the best choice for countries all over the world to improve the environment and promote sustainable economic development. Its main component is methane, and it also contains carbon dioxide, alkanes, hydrogen sulfide, etc. h 2 S is a harmful impurity, which not only causes corrosion to transportation pipelines and equipment, affects subsequent processing, but also seriously threatens personal safety. It is one of the environmental pollutants that must be controlled. At present, desulfurization technologies mainly include wet desulfurization and dry desulfurization. Among them, wet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/30C10L3/10B01D53/02
CPCB01D53/02B01D2252/30B01D2257/304B01J20/28054B01J20/3085C10L3/10C10L3/103Y02C20/40
Inventor 马云倩臧立华
Owner QILU UNIV OF TECH
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