0008 min at 30 mgl of 24 dcp concentration to 00277

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Unformatted text preview: at 1 2 1 Advanced Materials and Process Engineering (AMPEN) Researc h Group Faculty of Chemical and Natural Resources Engineering, 2 Institute Ibnu Sina for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, MALAYSIA E-mail: hbmat@fkkksa.utm.my Sulfur has high affinity towards mercury due to the fact that the su lfur can react with mercury based on acid-base theory. In this case, sulfur and mercury can act as an electron donor and acceptor respectively. Thus, it is expected that the presence of sulfur in silica matrices could improve mercury adsorption capacity. In this study sulfur-functionalized silica gel (SFSG) adsorbents for mercury removal in vapor phase were synthesized via co-condensation and impregnation processes. The functionalized using co-condensation was carried out using MPTMS as silica precursor whi le for impregnation process; synthesized silica gel was impregnated with elemental sulfur and carbon disulfide (CS 2). The adsorbents obtained were characterized by variety of techniques including Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and nitrogen adsorption/desorption (NAD). The vapor phase mercury adsorption experiments of all adsorbents were performed using the laboratory-scale fixed-bed reactor. The effects of functionalization, time and temperature were stud ied. The results o indicate that the Hg adsorption capacity of functionalized silica gel adsorbents performed better than pure silica gel. ENV-O10 ONE-STEP SYNTHESIS OF MERCURY ADSORBENTS USING ORGANOSILANES AS PRECURSORS 1 N Saman, K Johari and 1 1,2 H Mat 1 Advanced Materials and Process Engineering (AMPEN) Research Group, Faculty of Chemical and Natural Resources Engineering, 2 Novel Materials and Process Technology (NoMPTech) Research Group, Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia E-mail: hbmat@fkkksa.utm.my A classical procedure for preparing MCM materials was carried out in the presence of cetyltrimethylammonium bromide (CTAB) as directing agent, aqueous ammonia and et hanol as catalyst and solvent, and TEOS as a precursor. However, these materials need to be modified by introducing an active group to enhance adsorption performance. In this paper, organosilanes (BTESPT and MPTMS) having an act...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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