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Nanocarbon-based Nanocatalyst Design & Synthesis for Hydrogen Sulfide Removal from Gas Feed

Kamali, Farnoush | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49405 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Baghalha, Morteza; Eskandari, Mohammad Mehdi
  7. Abstract:
  8. well known metal-free nanostructure carbon-based catalyst, mesoporous graphitic carbon nitride, with diverse morphologies were synthesized by using ethylendiamine/carbontetrachloride as a precursor, SBA-15 and SBA-15 nanorod as hard templates. We have investigated morphology effect on the catalytic performance. The catalysts were characterized by means of low angle and wide angle XRD, BET, FT-IR, CHNOS, FE-SEM analysis. Because of high surface area, pore volume and high nitrogen content, which acts as lewis basic site, for the first time, carbon nitride is chosen for selective catalytic oxidation of hydrogen sulfide to sulfure. Reaction was taken place in a fixed-bed reactor and at continuous condition . The feed consists 200 lit/min gas feed with 2000 ppm H2S and 1000 ppm O2, which was diluted with nitrogen gas. The reaction was done at 190, 210 & 230 °C. The results show, carbon nitride with the nanorod morphology has a better performance. This catalyst has shown 99% conversion and high selectivity at 190 °C, because of narrow pore size distribution and enhanced mass transfer caused by rod-like morphology
  9. Keywords:
  10. Hydrogen Sulfide ; Graphitic Carbon Nitride ; Selective Oxidation ; Catalytic Oxidation ; Mesoporous Silica Nanoparticles ; Selective Catalytic Oxidation ; Carbon Nitride Nanorod ; Hard Templating

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