Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Surface and Adsorption Properties of Activated Carbon Fabric Prepared from Cellulosic Polymer: Mixed Activation Method

  • Bhati, Surendra (Department of Chemistry, Govt. Narmada P.G. College, Barkatullah University) ;
  • Mahur, J.S. (Department of Chemistry, Govt. Narmada P.G. College, Barkatullah University) ;
  • Dixit, Savita (Department of Applied Chemistry, Maulana Azad National Institute of Technology) ;
  • Choubey, O.N. (Department of Chemistry, Govt. Narmada P.G. College, Barkatullah University)
  • Received : 2012.10.02
  • Accepted : 2012.11.22
  • Published : 2013.02.20
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Abstract

In this study, activated carbon fabric was prepared from a cellulose-based polymer (viscose rayon) via a combination of physical and chemical activation (mixed activation) processes by means of $CO_2$ as a gasifying agent and surface and adsorption properties were evaluated. Experiments were performed to investigate the consequence of activation temperature (750, 800, 850 and $925^{\circ}C$), activation time (15, 30, 45 and 60 minutes) and $CO_2$ flow rate (100, 200, 300 and 400 mL/min) on the surface and adsorption properties of ACF. The nitrogen adsorption isotherm at 77 K was measured and used for the determination of surface area, total pore volume, micropore volume, mesopore volume and pore size distribution using BET, t-plot, DR, BJH and DFT methods, respectively. It was observed that BET surface area and TPV increase with rising activation temperature and time due to the formation of new pores and the alteration of micropores into mesopores. It was also found that activation temperature dominantly affects the surface properties of ACF. The adsorption of iodine and $CCl_4$ onto ACF was investigated and both were found to correlate with surface area.

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