TY - JOUR
T1 - Three-dimensionally ordered macroporous SrFeO 3-δ with high surface area
T2 - Active catalysts for the complete oxidation of toluene
AU - Ji, Kemeng
AU - Dai, Hongxing
AU - Deng, Jiguang
AU - Zhang, Lei
AU - Wang, Fang
AU - Jiang, Haiyan
AU - AU, Chak Tong
N1 - Funding Information:
The work was supported by the NSF of China ( 20973017 and 21077007 ), the NSF of Beijing Municipality ( 2102008 ), the Creative Research Foundation of Beijing University of Technology ( 00500054R4003 and 005000543111501 ), the National High-Tech Research and Development (863) Key Program of Ministry of Science and Technology of China ( 2009AA063201 ), and the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality ( PHR201007105 and PHR201107104 ). CTAU thanks the Hong Kong Baptist University for financial support ( FRG2/09-10/023 ). We also thank Mrs. Jianping He (State Key Laboratory of Advanced Metals and Materials, University of Science & Technology Beijing) for doing the SEM analysis.
PY - 2012/5/28
Y1 - 2012/5/28
N2 - Three-dimensionally ordered macroporous (3DOM) cubic perovskite-type oxides SrFeO 3-δ were prepared using the citrate acid-assisted poly(methyl methacrylate)-templating method in the presence of ethylene glycol, sucrose or l-lysine (denoted as SFO-0, SFO-Sucrose, and SFO-Lysine, respectively). It is found that the SrFeO 3-δ samples possessed a 3DOM architecture and were high in surface area (34-61 m 2/g). The porous SrFeO 3-δ catalysts performed well in toluene combustion, with the SFO-0 sample exhibiting the highest catalytic activity (T 50% = 292 °C and T 90% = 340 °C at 20,000 mL/(g h)). The catalytic activity of the samples showed a good relationship with surface area, oxygen adspecies concentration, and low-temperature reducibility, all decrease in the order of SFO-0 > SFO-Lysine > SFO-Sucrose SFO-bulk. It is deduced that the good catalytic performance of the porous SrFeO 3-δ materials is due to the good low-temperature reducibility, large surface area, and high oxygen adspecies concentration.
AB - Three-dimensionally ordered macroporous (3DOM) cubic perovskite-type oxides SrFeO 3-δ were prepared using the citrate acid-assisted poly(methyl methacrylate)-templating method in the presence of ethylene glycol, sucrose or l-lysine (denoted as SFO-0, SFO-Sucrose, and SFO-Lysine, respectively). It is found that the SrFeO 3-δ samples possessed a 3DOM architecture and were high in surface area (34-61 m 2/g). The porous SrFeO 3-δ catalysts performed well in toluene combustion, with the SFO-0 sample exhibiting the highest catalytic activity (T 50% = 292 °C and T 90% = 340 °C at 20,000 mL/(g h)). The catalytic activity of the samples showed a good relationship with surface area, oxygen adspecies concentration, and low-temperature reducibility, all decrease in the order of SFO-0 > SFO-Lysine > SFO-Sucrose SFO-bulk. It is deduced that the good catalytic performance of the porous SrFeO 3-δ materials is due to the good low-temperature reducibility, large surface area, and high oxygen adspecies concentration.
KW - Colloidal crystal templating preparation method
KW - Low-temperature reducibility
KW - Oxygen-deficient strontium ferrite
KW - Three-dimensional ordered macroporous perovskite-type oxide
KW - Toluene combustion
UR - http://www.scopus.com/inward/record.url?scp=84859883542&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2012.03.013
DO - 10.1016/j.apcata.2012.03.013
M3 - Journal article
AN - SCOPUS:84859883542
SN - 0926-860X
VL - 425-426
SP - 153
EP - 160
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -