Preparation of amine modified layered double hydroxide and its adsorption mechanism for CO2

Ning Ai; Zhe Jiang; Xi Xu; Qifeng Qian; Xi Wu; Jiawei Wang

doi:10.3969/j.issn.0438-1157.2013.02.028

Preparation of amine modified layered double hydroxide and its adsorption mechanism for CO₂

Ning Ai, Zhe Jiang, Xi Xu, Qifeng Qian, Xi Wu, Jiawei Wang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

An amine modified NiMgAl layered double hydroxide was synthesized via an exfoliation and grafting method. The samples were characterized by elemental analysis, X-ray diffraction, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and thermogravimetric analysis(TGA). Adsorption of carbon dioxide on the modified layered double hydroxide was investigated by TGA at 25-150°C. NiMgAl N2 shows a maximum CO₂ adsorption capacity of 2.02 mmol·g^-1 in pure CO₂ and 1.89 mmol·g^-1 in 15% CO₂/N₂ at 80°C. The optimum desorption temperature is 140°C for NiMgAl N2 according to adsorption/desorption experiments. By in-situ DRIFTS, the adsorption of CO₂ on NiMgAl N2 follows the mechanism of formation of ammonium carbamate ion pairs.

Original language	English
Pages (from-to)	616-623
Number of pages	8
Journal	Huagong Xuebao/CIESC Journal
Volume	64
Issue number	2
DOIs	https://doi.org/10.3969/j.issn.0438-1157.2013.02.028
Publication status	Published - Feb 2013

Keywords

Adsorption
Amine
Carbon dioxide
In-situ infrared spectrometer
Layered double hydroxide

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10.3969/j.issn.0438-1157.2013.02.028

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title = "Preparation of amine modified layered double hydroxide and its adsorption mechanism for CO2",

abstract = "An amine modified NiMgAl layered double hydroxide was synthesized via an exfoliation and grafting method. The samples were characterized by elemental analysis, X-ray diffraction, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and thermogravimetric analysis(TGA). Adsorption of carbon dioxide on the modified layered double hydroxide was investigated by TGA at 25-150°C. NiMgAl N2 shows a maximum CO2 adsorption capacity of 2.02 mmol·g-1 in pure CO2 and 1.89 mmol·g-1 in 15% CO2/N2 at 80°C. The optimum desorption temperature is 140°C for NiMgAl N2 according to adsorption/desorption experiments. By in-situ DRIFTS, the adsorption of CO2 on NiMgAl N2 follows the mechanism of formation of ammonium carbamate ion pairs.",

keywords = "Adsorption, Amine, Carbon dioxide, In-situ infrared spectrometer, Layered double hydroxide",

author = "Ning Ai and Zhe Jiang and Xi Xu and Qifeng Qian and Xi Wu and Jiawei Wang",

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doi = "10.3969/j.issn.0438-1157.2013.02.028",

language = "English",

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TY - JOUR

T1 - Preparation of amine modified layered double hydroxide and its adsorption mechanism for CO2

AU - Ai, Ning

AU - Jiang, Zhe

AU - Xu, Xi

AU - Qian, Qifeng

AU - Wu, Xi

AU - Wang, Jiawei

PY - 2013/2

Y1 - 2013/2

N2 - An amine modified NiMgAl layered double hydroxide was synthesized via an exfoliation and grafting method. The samples were characterized by elemental analysis, X-ray diffraction, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and thermogravimetric analysis(TGA). Adsorption of carbon dioxide on the modified layered double hydroxide was investigated by TGA at 25-150°C. NiMgAl N2 shows a maximum CO2 adsorption capacity of 2.02 mmol·g-1 in pure CO2 and 1.89 mmol·g-1 in 15% CO2/N2 at 80°C. The optimum desorption temperature is 140°C for NiMgAl N2 according to adsorption/desorption experiments. By in-situ DRIFTS, the adsorption of CO2 on NiMgAl N2 follows the mechanism of formation of ammonium carbamate ion pairs.

AB - An amine modified NiMgAl layered double hydroxide was synthesized via an exfoliation and grafting method. The samples were characterized by elemental analysis, X-ray diffraction, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and thermogravimetric analysis(TGA). Adsorption of carbon dioxide on the modified layered double hydroxide was investigated by TGA at 25-150°C. NiMgAl N2 shows a maximum CO2 adsorption capacity of 2.02 mmol·g-1 in pure CO2 and 1.89 mmol·g-1 in 15% CO2/N2 at 80°C. The optimum desorption temperature is 140°C for NiMgAl N2 according to adsorption/desorption experiments. By in-situ DRIFTS, the adsorption of CO2 on NiMgAl N2 follows the mechanism of formation of ammonium carbamate ion pairs.

KW - Adsorption

KW - Amine

KW - Carbon dioxide

KW - In-situ infrared spectrometer

KW - Layered double hydroxide

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DO - 10.3969/j.issn.0438-1157.2013.02.028

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JO - Huagong Xuebao/CIESC Journal

JF - Huagong Xuebao/CIESC Journal

IS - 2

ER -

Preparation of amine modified layered double hydroxide and its adsorption mechanism for CO₂

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