TY - JOUR
T1 - The sorption of hydrogen sulfide from hot syngas by metal oxides over supports
AU - Ko, Tzu Hsing
AU - Chu, Hsin
AU - Chaung, Lung Kai
N1 - Funding Information:
The authors gratefully acknowledge the constructive comments of anonymous reviewers. The authors also would like to express their gratitude to the Energy Commission, Ministry of Economic Affairs, ROC for partial financial support under Contract 91-D0124.
PY - 2005/1
Y1 - 2005/1
N2 - Six 5 wt.% metal sorbents including Mn, Fe, Cu, Co, Ce and Zn supported on γ-Al 2O 3, prepared by the incipient wetness impregnation method with calcination at 700°C for 2 h, have been investigated for sorption of hydrogen sulfide in the temperature range of 500-700°C. The sorption experiments were conducted in a fixed-bed reactor in terms of breakthrough curves and characterized by X-ray powder diffraction. The results reveal that the copper and manganese sorbents exhibit the best performance because they provide nearly 100% utilization, but the copper sorbent has a lower sulfur sorption capacity compared with the manganese sorbent. The zinc and cerium sorbents are not good candidates attributed to the vaporization of zinc and unexpected product for cerium. Effects of support materials on 5 wt.% manganese were also investigated by using γ-Al 2O 3, SiO 2 and TiO 2 in this study. Five weight percent Mn/γ-Al 2O 3 shows the best performance among support candidates. On the basis of XRPD and BET surface area analysis, TiO 2 appears a huge loss in BET surface area associated with a significant formation of rutile form.
AB - Six 5 wt.% metal sorbents including Mn, Fe, Cu, Co, Ce and Zn supported on γ-Al 2O 3, prepared by the incipient wetness impregnation method with calcination at 700°C for 2 h, have been investigated for sorption of hydrogen sulfide in the temperature range of 500-700°C. The sorption experiments were conducted in a fixed-bed reactor in terms of breakthrough curves and characterized by X-ray powder diffraction. The results reveal that the copper and manganese sorbents exhibit the best performance because they provide nearly 100% utilization, but the copper sorbent has a lower sulfur sorption capacity compared with the manganese sorbent. The zinc and cerium sorbents are not good candidates attributed to the vaporization of zinc and unexpected product for cerium. Effects of support materials on 5 wt.% manganese were also investigated by using γ-Al 2O 3, SiO 2 and TiO 2 in this study. Five weight percent Mn/γ-Al 2O 3 shows the best performance among support candidates. On the basis of XRPD and BET surface area analysis, TiO 2 appears a huge loss in BET surface area associated with a significant formation of rutile form.
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U2 - 10.1016/j.chemosphere.2004.09.029
DO - 10.1016/j.chemosphere.2004.09.029
M3 - Article
C2 - 15620738
AN - SCOPUS:11144313001
SN - 0045-6535
VL - 58
SP - 467
EP - 474
JO - Chemosphere
JF - Chemosphere
IS - 4
ER -