Selective catalytic reduction of sulfur dioxide by carbon monoxide over iron oxide supported on activated carbon

Authors

GUANGJIAN WANG
LIANCHENG BING
ZHIJIAN YANG
JIANKANG ZHANG

DOI

10.3906/kim-1302-68

Abstract

The selective reduction of sulfur dioxide with carbon monoxide to elemental sulfur was studied over AC-supported transition-metal oxide catalysts. According to the study, Fe_2O_3/AC was the most active catalyst among the 4 AC-supported catalysts tested. By using Fe_2O_3/AC, the best catalyst, when the feed conditions were properly optimized (CO/SO_2 molar ratio = 2:1; sulfidation temperature, 400 °C; Fe content, 20 wt%; GHSV = 7000 mL g^{-1} h^{-1}), 95.43% sulfur dioxide conversion and 86.59% sulfur yield were obtained at the temperature of 350 °C. Catalyst samples were characterized by X-ray powder diffraction in order to relate the phase composition to the activation behavior and catalytic performance. The active phase of catalyst was detected as FeS_2, and the formation of FeS_2 was greatly dependent on the sulfidation temperature.

Keywords

Sulfur dioxide, carbon monoxide, activated carbon, transition-metal oxide, selective catalytic

First Page

70

Last Page

78

Recommended Citation

WANG, GUANGJIAN; BING, LIANCHENG; YANG, ZHIJIAN; and ZHANG, JIANKANG (2014) "Selective catalytic reduction of sulfur dioxide by carbon monoxide over iron oxide supported on activated carbon," Turkish Journal of Chemistry: Vol. 38: No. 1, Article 7. https://doi.org/10.3906/kim-1302-68
Available at: https://journals.tubitak.gov.tr/chem/vol38/iss1/7