Citation: YANG Cheng, QI Jinshan, CUI Xingyu, CHENG Wenping, MA Jinghong, LI Ruifeng. Synthesis of Zeolite A/Activated Carbon Composite and CH₄/N₂ Adsorption Separation Performance[J]. Chinese Journal of Applied Chemistry, ;2018, 35(4): 462-468. doi: 10.11944/j.issn.1000-0518.2018.04.170102 shu

Synthesis of Zeolite A/Activated Carbon Composite and CH₄/N₂ Adsorption Separation Performance

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: CHENG Wenping, chengwenping@tyut.edu.cn
Received Date: 5 April 2017
Revised Date: 18 May 2017
Accepted Date: 30 June 2017

Fund Project: the National Natural Science Foundation of China 51204120Supported by the National Natural Science Foundation of China(No.51204120), the Natural Science Foundation for Young Scientists of Shanxi Province, China(2014021014-1), the Key Scientific and Technological Project of Coal Fund of Shanxi Province(No.FT201402-03)the Key Scientific and Technological Project of Coal Fund of Shanxi Province FT201402-03the Natural Science Foundation for Young Scientists of Shanxi Province, China 2014021014-1

Figures(5)

A shaped activated carbon(AC) prepared after carbonization and physical activation, starting from pitch and elutrilithe, was further hydrothermally treated with alkaline solution. The effect of crystallization time on the formation of zeolite 4A, the pore structure and the adsorption ability of the composite towards CH₄ and N₂ were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), N₂ adsorption-desorption at 77 K and CO₂ adsorption isotherm at 273 K. The results show that silicon and aluminum in this composite are converted to zeolite 4A during the hydrothermal treatment. Simultaneously, micropores between 0.45~0.6 nm are appeared, the micropore volume is increased, accompanied by the presence of a few mesopores and macropores. Adsorption isotherms at 298 K indicate that the adsorption amount of CH₄ by composite AC-2(crystalized for 6 hours) is elevated to 10.8 mL/g with a high CH₄/N₂ equilibrium selectivity of 3.7.
- elutrilithe,
- methane,
- nitrogen,
- adsorption,
- separation
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis of Zeolite A/Activated Carbon Composite and CH4/N2 Adsorption Separation Performance

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通讯作者: 陈斌, bchen63@163.com

Synthesis of Zeolite A/Activated Carbon Composite and CH₄/N₂ Adsorption Separation Performance