Commenced in January 2007
Paper Count: 31113
Preparation and Evaluation of New Nanocatalysts for Selective Oxidation of H2S to Sulfur
Abstract:Selective oxidation of H2S to elemental sulfur in a fixed bed reactor over newly synthesized alumina nanocatalysts was physio-chemically investigated and results compared with a commercial Claus catalyst. Amongst these new materials, Al2O3- supported sodium oxide prepared with wet chemical technique and Al2O3 nanocatalyst prepared with spray pyrolysis method were the most active catalysts for selective oxidation of H2S to elemental sulfur. Other prepared nanocatalysts were quickly deactivated, mainly due to the interaction with H2S and conversion into sulfides.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1082714Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2175
 Kirk-Othmer, Encyclopedia of chemical technology, vol. 22, 3rd Ed, Wiley/Interscience: New York, 1983, p. 276.
 M.-II Kim, W.-D. Ju, K.-H. Kim, D.-W. Park, and S.-S. Hong, "Selective oxidation of hydrogen sulfide to elemental surfur and ammonium thiosulfate using VOx/TiO2 catalysts," Stud. Surf. Sci. Catal., vol. 159, pp. 225-228, 2006.
 S. W. Chun, J. Y. Jang, D. W. Park, H. C. Woo, and J. S. Chung, "Selective oxidation of H2S to elemental sulfur over TiO2/SiO2 catalysts," Appl. Catal., B, vol. 16, pp. 235-243, 1998.
 S. Yasyerli, G. Dogu, and T. Dogu, "Selective oxidation of H2S to elemental sulfur over Ce-V mixed oxide and CeO2 catalysts prepared by the complexation technique," Catal. Today, vol. 117, pp. 271-278, 2006.
 J. H. Kim, K. Y. Jung, K. Y. Park, and S. B. Cho, "Characterization of mesoporous alumina particles prepared by spray pyrolysis of Al(NO3)2┬À9H2O precursor: Effect of CTAB and urea," Microporous Mesoporous Mater., vol. 128, pp. 85-90, 2010.
 T. Novakovic, N. Radic, B. Grbic, V. Dondur, M. Mitric, D. Randjelovic, D. Stoychev, and P. Stefanov, "The thermal stability of porous alumina/stainless steel catalyst support obtained by spray Pyrolysis," Appl. Surf. Sci., vol. 255, pp. 3049-3055, 2008.
 G. P. Kalaignan, D. J. Seo, and S. B. Park, "Characterization of Srβ- alumina prepared by sol-gel and spray pyrolysis methods," Mater. Chem. Phys., vol. 85, pp. 286-293, 2004.
 M. R. Zachariah, and B. Y.H. Liu, "Synthesis of nanoporous particles," U.S. Patent No. 7276224 B2, 2007.
 O. I. Platonov, and L. S. Tsemekhman, "Gas composition effect on the Klauss process efficiency", Russ. J. Appl. Chem., vol. 82, pp. 1314- 1316, 2009.
 P. D. Clark, N. I. Dowling, M. Huang, O. Okemona, G. D. Butlin, R. Hou, and W. S. Kijlstra, "Studies on sulfate formation during the conversion of H2S and SO2 to sulfur over activated alumina," Appl. Catal., A, vol. 235, pp. 61-69, 2002.