Study on the Performance of Supported La-Fe-V Oxide Catalyst for H2S Catalytic Oxidation
Zhou Fan, Guo Songling, Jiao Luhang, Zhang Yifan, Tao Xun, Ding Lu, Gao Yunfei, Wang Fuchen
Institute of Clean Coal Technology, Carbon-Containing Waste Resource Zero Carbon Utilization Engineering Center of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
Abstract：H2S is a highly toxic and strongly corrosive gas widely present in natural gas, refinery gas, and coal chemical process gas. Its efficient removal and sulfur recovery are of great significance for environmental protection and resource utilization. In this study, a series of supported La-Fe-V (LFV) oxide catalysts were prepared by the impregnation method, and the effects of support types (αAl2O3, γAl2O3, CeO2, and TiO2) on the catalytic oxidation performance of H2S were investigated. The results showed that LaFeO3 and LaVO4 phases were successfully formed in LFV catalysts supported on different carriers. The type of supporters significantly affected the stability of H2S low-temperature catalytic oxidation. The LFV/γAl2O3 catalyst, due to its high specific surface area and abundant surface acidic sites, was conducive to the dispersion of active components and exhibited optimal catalytic performance. After 8 h of reaction at 150 ℃, it still maintained an 80% H2S conversion rate, which was significantly better than the commercial RSR-4 catalyst (Fe2O3/SiO2). XPS analysis confirmed that the reaction follows the MvK mechanism, with Fe3+/Fe2+ and V5+ redox pairs participating in the lattice oxygen cycle, while γAl2O3 mainly acted as an inert support in the reaction.
Zhou Fan,Guo Songling,Jiao Luhang et al. Study on the Performance of Supported La-Fe-V Oxide Catalyst for H2S Catalytic Oxidation[J]. Chemical Reaction Engineering and Technology, 2026, 42(4): 323-331.
