화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.15, No.2, 207-211, March, 2009
DOI10.1016/j.jiec.2008.10.006  Export Citation
Catalytic performance of vanadia-doped titania-pillared clay for the selective catalytic oxidation of H2S
Kanattukara Vijayan Bineesh, Sang-Yun Kim, Balasamy Rabindran Jermy, and Dae-Won Park†
  • Division of Chemical Engineering, Pusan National University, Busan 609-735, Republic of Korea
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A series of vanadia-doped titania pillared clay (V/Ti-PILC) with various amounts of vanadia were prepared and their performance for the selective catalytic oxidation of H2S was investigated in this study. V/Ti-PILCs were characterized using X-ray diffraction (XRD), BET apparatus, and X-ray photoelectron spectroscopy (XPS). V/Ti-PILCs showed better catalytic performance than as such Ti-PILC at temperatures ranging from 220 to 300 ℃ without any considerable SO2 emission. The H2S conversion over V/Ti-PILC increased with increasing vanadia content up to 5 wt.%. This superior catalytic performance might be related to the uniform dispersion of vanadia in the formof monomeric and polymeric species. However, it decreased at 10 wt.% vanadia loading due to the decrease of surface area and to the formation of crystalline V2O5 phase. The presence ofwater vapor in the reactantmixture resulted in the decrease of the H2S conversion.
Keywords:Pillared-clay;Selective catalytic oxidation;Hydrogen sulfide;V/Ti-PILC
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