CF<inf>4</inf> 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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

CF<inf>4</inf> is a gas with high global warming potential and has an extremely long atmospheric lifetime. This study developed a method for capturing CF<inf>4</inf> 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 CF<inf>4</inf> adsorption of PVDF-based adsorbents were investigated. Increasing the carbonization temperature enhanced the textural properties of the adsorbent, resulting in the increased CF<inf>4</inf> adsorption capacity. Above 700 °C, PVDF was fully dehydrofluorinated, and the microporous carbon synthesized at 800 °C exhibited superior textural properties with a maximum CF<inf>4</inf> 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 CF<inf>4</inf> over N<inf>2</inf> at relatively low CF<inf>4</inf> pressures. The microporous carbons developed in this study have potential for use as novel adsorbents for CF<inf>4</inf> capture.

Original languageEnglish
Pages (from-to)8561-8568
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume54
Issue number34
DOIs
Publication statusPublished - 2015 Sep 2

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ASJC Scopus subject areas

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

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