TY - JOUR
T1 - Desulfurization of hot coal gas over high-surface-area LaMeO x/MCM-41 sorbents
AU - Liu, B. S.
AU - Wan, Z. Y.
AU - Zhan, Y. P.
AU - Au, C. T.
N1 - Funding Information:
We thank the financial support of National Natural Science Foundation of China and BAOSTEEL Group Corporation (Grant No. 50876122). We are grateful to the Center for Surface Analysis and Research, HKBU, for XRD and XPS analysis of samples.
PY - 2012/8
Y1 - 2012/8
N2 - We prepared LaMeO x/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO 3/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO 3. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H 2-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H 2S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (×10) revealed that the LaFeO 3/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry.
AB - We prepared LaMeO x/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO 3/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO 3. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H 2-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H 2S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (×10) revealed that the LaFeO 3/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry.
KW - H S removal
KW - Hot coal gas
KW - Mesoporous materials
KW - Rare earth oxides
UR - http://www.scopus.com/inward/record.url?scp=84861978217&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2012.03.048
DO - 10.1016/j.fuel.2012.03.048
M3 - Journal article
AN - SCOPUS:84861978217
SN - 0016-2361
VL - 98
SP - 95
EP - 102
JO - Fuel
JF - Fuel
ER -