Study on Desulfurization Efficiency and Products of Ce-Doped Nanosized ZnO Desulfurizer at Ambient Temperature
来源期刊：JOURNAL OF RARE EARTHS2007年第3期
论文作者：Shao Chunhong Yan Bo Zhang Jie Wang Xin Kong Xiangji Jiang Anxi Li Fen
Key words：nanosized ZnO; Ce-doped; desulfurization at ambient temperature; rare earths;
Abstract: Ce-doped nanosized ZnO desulfurizer was prepared by homogeneous precipitation, and its desulfurization efficiency at ambient temperature was investigated through dynamic experiments. The results showed that the desulfurization activity of nanosized Ce-ZnO had improved greatly, compared to nanosized ZnO desulfurizer. Nanosized Ce-ZnO desulfurizer was characterized by XRD, TPD-MS, XPS, and TEM. The research results indicated that doping Ce decreased the particle size of the nanosized ZnO desulfurizer and ZnS was the principal desulfurization product. There were adsorption complexes of HS and S on the surface of desulfurizer as well. Only a small amount of vapor appeared in the tail gas on the condition of meeting the precision of desulfurization.
Shao Chunhong1，Yan Bo2，Zhang Jie2，Wang Xin2，Kong Xiangji2，Jiang Anxi2，Li Fen2
(1.Civil Engineering Department, Heilongjiang Institute of Technology, Harbin 150050, China;
2.Department of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China)
Abstract:Ce-doped nanosized ZnO desulfurizer was prepared by homogeneous precipitation, and its desulfurization efficiency at ambient temperature was investigated through dynamic experiments. The results showed that the desulfurization activity of nanosized Ce-ZnO had improved greatly, compared to nanosized ZnO desulfurizer. Nanosized Ce-ZnO desulfurizer was characterized by XRD, TPD-MS, XPS, and TEM. The research results indicated that doping Ce decreased the particle size of the nanosized ZnO desulfurizer and ZnS was the principal desulfurization product. There were adsorption complexes of HS and S on the surface of desulfurizer as well. Only a small amount of vapor appeared in the tail gas on the condition of meeting the precision of desulfurization.
Key words:nanosized ZnO; Ce-doped; desulfurization at ambient temperature; rare earths;
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