Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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A Study of the Optimum Pore Structure for Mercury Vapor Adsorption

  • Kim, Byung-Joo (Smart Composite Material Research Team, Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Composites) ;
  • Bae, Kyong-Min (Department of Chemistry, Inha University) ;
  • Park, Soo-Jin (Department of Chemistry, Inha University)
  • Received : 2010.11.24
  • Accepted : 2011.03.03
  • Published : 2011.05.20
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Abstract

In this study, mercury vapor adsorption behaviors for some kinds of porous materials having various pore structures were investigated. The specific surface area and pore structures were studied by BET and D-R plot methods from $N_2$/77 K adsorption isotherms. It was found that the micropore materials (activated carbons, ACs) showed the highest mercury adsorption capacity. In a comparative study of mesoporous materials (SBA-15 and MCM-41), the adsorption capacity of the SBA-15 was higher than that of MCM-41. From the pore structure analysis, it was found that SBA-15 has a higher micropore fraction compared to MCM-41. This result indicates that the mercury vapor adsorptions can be determined by two factors. The first factor is the specific surface area of the adsorbent, and the second is the micropore fraction when the specific surface areas of the adsorbent are similar.

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