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Bimetal composite N-amyl imidazole thiocyanate ionic liquid as well as preparation method and application thereof in CO treatment

A technology of amyl imidazolium thiocyanate and ionic liquid, which is applied in the field of new waste gas treatment materials, can solve the problems that the absorption capacity is greatly affected by temperature, the viscosity of ionic liquid is large, and the cycle stability is poor, so as to achieve good cycle adsorption performance and adsorption No change in performance, the effect of optimizing the absorption performance

Active Publication Date: 2022-03-25
苏州仕净科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ionic liquids used in the field of CO absorption reported in the literature are mainly aprotic ionic liquids, but they all have low absorption capacity, high viscosity of ionic liquids, poor cycle stability, slow absorption rate, and large absorption capacity affected by temperature, etc. question
Because CO is a stable neutral gas containing σ-π coordination bonds, it is easy to form π-complexes with transition metals in the D region. Therefore, in recent years, some studies have reported the use of functionalized cuprous salt ionic liquids for CO Absorption and separation, but the absorption capacity is low and there is a phenomenon of poor cycle performance

Method used

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  • Bimetal composite N-amyl imidazole thiocyanate ionic liquid as well as preparation method and application thereof in CO treatment
  • Bimetal composite N-amyl imidazole thiocyanate ionic liquid as well as preparation method and application thereof in CO treatment
  • Bimetal composite N-amyl imidazole thiocyanate ionic liquid as well as preparation method and application thereof in CO treatment

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Embodiment 1

[0038] This embodiment prepares a kind of bimetallic composite N-amyl imidazole thiocyanate ionic liquid, wherein the molar ratio of N-amyl imidazole thiocyanate, cuprous thiocyanate, magnesium thiocyanate in the ionic liquid is 1 :1:1, the synthetic route map is as follows figure 1 As shown, it specifically includes the following steps:

[0039] (1) Synthesis of N-amyl imidazolium thiocyanate ionic liquid:

[0040] Using acetone as solvent, add N-pentylimidazole hydrochloride (17.4 g, 0.1 mol) and sodium thiocyanate (8.1 g, 0.1 mol) into the flask, stir at room temperature for 24 h, rotary evaporate, and extract and separate with chloroform To obtain an ionic liquid, the obtained ionic liquid was washed several times with deionized water until AgNO was added to the washed water 3 After that, no precipitation occurred, and finally rotary evaporation was performed, and vacuum drying was performed at 80°C for 6 h to obtain 16.8 g of N-pentylimidazolium thiocyanate ionic liquid...

Embodiment 2

[0044] This embodiment prepares a kind of bimetallic composite N-amyl imidazole thiocyanate ionic liquid, wherein the molar ratio of N-amyl imidazole thiocyanate, cuprous thiocyanate, magnesium thiocyanate in the ionic liquid is 1 :1.5:1.5, the synthetic route is as follows figure 1 As shown, it specifically includes the following steps:

[0045] (1) Synthesis of N-amyl imidazolium thiocyanate ionic liquid:

[0046] Using acetone as solvent, add N-pentylimidazole hydrochloride (17.4 g, 0.1 mol) and sodium thiocyanate (8.1 g, 0.1 mol) into the flask, stir at room temperature for 24 h, rotary evaporate, and extract and separate with chloroform To obtain an ionic liquid, the obtained ionic liquid was washed several times with deionized water until AgNO was added to the washed water 3 After that, no precipitation occurred, and finally rotary evaporation was carried out, and vacuum drying was carried out at 80°C for 6 h to obtain 16.8 g of N-pentylimidazolium thiocyanate ionic li...

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Abstract

The invention discloses a bimetallic composite N-amyl imidazole thiocyanate ionic liquid and a preparation method and application thereof in CO treatment, the structural formula of the ionic liquid is as follows: mixing an N-amyl imidazole thiocyanate ionic liquid with cuprous thiocyanate and magnesium thiocyanate, heating and stirring to obtain a homogeneous liquid, the liquid state can still be kept at room temperature; the bimetal composite N-amyl imidazole thiocyanate ionic liquid can selectively absorb CO, the balance absorption amount of the bimetal composite N-amyl imidazole thiocyanate ionic liquid reaches 0.229 mol / mol of composite ionic liquid, and the bimetal composite N-amyl imidazole thiocyanate ionic liquid has good CO cycle absorption performance and has good application prospects in the fields of CO absorption and CO / N2 separation materials.

Description

technical field [0001] The invention relates to the field of new materials for waste gas treatment, in particular to a bimetallic composite N-pentylimidazolium thiocyanate ionic liquid, a preparation method thereof, and an application in CO treatment. Background technique [0002] Carbon monoxide (CO) mainly exists in industrial mixed gases such as synthesis gas, flue gas, coke oven gas, and blast furnace gas. As a highly toxic gas, CO is inhaled and combined with hemoglobin to cause poisoning. Chemical resources can be converted into many high value-added products such as alcohols, aldehydes, acids and esters. Therefore, it is of great industrial, environmental and scientific value to develop a high-efficiency and energy-saving CO separation and removal technology to meet the separation, purification and purification requirements of CO from industrial gases. [0003] Traditional CO separation methods include cryogenic separation, solution absorption, solid adsorption, memb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/58B01D53/78B01D53/62B01D53/96
CPCC07D233/58B01D53/78B01D53/62B01D53/96B01D2257/502Y02A50/20
Inventor 辛丰董仕宏何文
Owner 苏州仕净科技股份有限公司
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