CF4 Adsorption on Microporous Carbons Prepared by Carbonization of Poly(vinylidene fluoride)

Seung Wan Choi; Seok Min Hong; Jong Ho Park; Hee Tae Beum; Ki Bong Lee

doi:10.1021/acs.iecr.5b01228

CF₄ Adsorption on Microporous Carbons Prepared by Carbonization of Poly(vinylidene fluoride)

Seung Wan Choi, Seok Min Hong, Jong Ho Park, Hee Tae Beum, Ki Bong Lee

Department of Chemical and Biological Engineering

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

25 Citations (Scopus)

Abstract

CF₄ is a gas with high global warming potential and has an extremely long atmospheric lifetime. This study developed a method for capturing CF₄ gas via adsorption using microporous carbons. Microporous carbon adsorbents were synthesized by a facile protocol involving carbonization of poly(vinylidene fluoride) (PVDF) at high temperatures (400-800 °C) without additional activation, and the effects of carbonization on the characteristics and CF₄ adsorption of PVDF-based adsorbents were investigated. Increasing the carbonization temperature enhanced the textural properties of the adsorbent, resulting in the increased CF₄ adsorption capacity. Above 700 °C, PVDF was fully dehydrofluorinated, and the microporous carbon synthesized at 800 °C exhibited superior textural properties with a maximum CF₄ adsorption capacity of 1.85 mol/kg at 25 °C under atmospheric pressure. The PVDF-based microporous carbons also exhibited fast adsorption-desorption kinetics, excellent cyclic stability, and good selectivity for CF₄ over N₂ at relatively low CF₄ pressures. The microporous carbons developed in this study have potential for use as novel adsorbents for CF₄ capture.

Original language	English
Pages (from-to)	8561-8568
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	54
Issue number	34
DOIs	https://doi.org/10.1021/acs.iecr.5b01228
Publication status	Published - 2015 Sept 2

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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title = "CF4 Adsorption on Microporous Carbons Prepared by Carbonization of Poly(vinylidene fluoride)",

abstract = "CF4 is a gas with high global warming potential and has an extremely long atmospheric lifetime. This study developed a method for capturing CF4 gas via adsorption using microporous carbons. Microporous carbon adsorbents were synthesized by a facile protocol involving carbonization of poly(vinylidene fluoride) (PVDF) at high temperatures (400-800 °C) without additional activation, and the effects of carbonization on the characteristics and CF4 adsorption of PVDF-based adsorbents were investigated. Increasing the carbonization temperature enhanced the textural properties of the adsorbent, resulting in the increased CF4 adsorption capacity. Above 700 °C, PVDF was fully dehydrofluorinated, and the microporous carbon synthesized at 800 °C exhibited superior textural properties with a maximum CF4 adsorption capacity of 1.85 mol/kg at 25 °C under atmospheric pressure. The PVDF-based microporous carbons also exhibited fast adsorption-desorption kinetics, excellent cyclic stability, and good selectivity for CF4 over N2 at relatively low CF4 pressures. The microporous carbons developed in this study have potential for use as novel adsorbents for CF4 capture.",

author = "Choi, {Seung Wan} and Hong, {Seok Min} and Park, {Jong Ho} and Beum, {Hee Tae} and Lee, {Ki Bong}",

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T1 - CF4 Adsorption on Microporous Carbons Prepared by Carbonization of Poly(vinylidene fluoride)

AU - Choi, Seung Wan

AU - Hong, Seok Min

AU - Park, Jong Ho

AU - Beum, Hee Tae

AU - Lee, Ki Bong

PY - 2015/9/2

Y1 - 2015/9/2

N2 - CF4 is a gas with high global warming potential and has an extremely long atmospheric lifetime. This study developed a method for capturing CF4 gas via adsorption using microporous carbons. Microporous carbon adsorbents were synthesized by a facile protocol involving carbonization of poly(vinylidene fluoride) (PVDF) at high temperatures (400-800 °C) without additional activation, and the effects of carbonization on the characteristics and CF4 adsorption of PVDF-based adsorbents were investigated. Increasing the carbonization temperature enhanced the textural properties of the adsorbent, resulting in the increased CF4 adsorption capacity. Above 700 °C, PVDF was fully dehydrofluorinated, and the microporous carbon synthesized at 800 °C exhibited superior textural properties with a maximum CF4 adsorption capacity of 1.85 mol/kg at 25 °C under atmospheric pressure. The PVDF-based microporous carbons also exhibited fast adsorption-desorption kinetics, excellent cyclic stability, and good selectivity for CF4 over N2 at relatively low CF4 pressures. The microporous carbons developed in this study have potential for use as novel adsorbents for CF4 capture.

AB - CF4 is a gas with high global warming potential and has an extremely long atmospheric lifetime. This study developed a method for capturing CF4 gas via adsorption using microporous carbons. Microporous carbon adsorbents were synthesized by a facile protocol involving carbonization of poly(vinylidene fluoride) (PVDF) at high temperatures (400-800 °C) without additional activation, and the effects of carbonization on the characteristics and CF4 adsorption of PVDF-based adsorbents were investigated. Increasing the carbonization temperature enhanced the textural properties of the adsorbent, resulting in the increased CF4 adsorption capacity. Above 700 °C, PVDF was fully dehydrofluorinated, and the microporous carbon synthesized at 800 °C exhibited superior textural properties with a maximum CF4 adsorption capacity of 1.85 mol/kg at 25 °C under atmospheric pressure. The PVDF-based microporous carbons also exhibited fast adsorption-desorption kinetics, excellent cyclic stability, and good selectivity for CF4 over N2 at relatively low CF4 pressures. The microporous carbons developed in this study have potential for use as novel adsorbents for CF4 capture.

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CF₄ Adsorption on Microporous Carbons Prepared by Carbonization of Poly(vinylidene fluoride)

Abstract

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