Enhanced soot oxidation activity over CuO/CeO₂ mesoporous nanosheets

Abstract

CuO/CeO2 mesoporous nanosheets exhibited superior soot oxidation activity owing to the synergistic effects.

Highly improved acetone oxidation performance over mesostructured CuxCe1−xO2 hollow nanospheres

“…Clearly, one can see from Fig. 4 that all Cu x Ce 1Àx O 2 catalysts showed one sharp and strong peak centered at approximately 460 cm À1 , which was readily assigned to the triply degenerate F 2g band of the typically fluorite-type cubic CeO 2 crystal phase, 21,22,28,31 in good agreement with XRD characterization. Notably, it is apparent that, compared with pure CeO 2 , the full width at half maximum value of the F 2g band in all Cu x Ce 1Àx O 2 catalysts increased gradually with the increase in the Cu content, implying the improved number of defective sites.…”

“…3(a) reveal that all Cu x-Ce 1Àx O 2 catalysts presented the typically pure CeO 2 crystal phase and fully matched well with a fluorite-type cubic structure (JCPDS Card No. 34-0394), [30][31][32] and no impurities related to Cu species were detected, demonstrating their high crystal phase purity. Clearly, it can be seen that four distinct diffraction peaks of all Cu x Ce 1Àx O 2 catalysts at 2y values of approximately 28.61, 33.11, 47.51 and 56.31 were readily identified as the (111), ( 200), ( 220) and (311) crystal planes, 31,32 respectively.…”

“…34-0394), [30][31][32] and no impurities related to Cu species were detected, demonstrating their high crystal phase purity. Clearly, it can be seen that four distinct diffraction peaks of all Cu x Ce 1Àx O 2 catalysts at 2y values of approximately 28.61, 33.11, 47.51 and 56.31 were readily identified as the (111), ( 200), ( 220) and (311) crystal planes, 31,32 respectively. These four diffraction peaks of all Cu x Ce 1Àx O 2 catalysts apparently became widened and weaken gradually with the increase in the Cu content, signifying the gradual decrease in the crystallinity.…”

Preparation of Cerium‐Bismuth Oxide Catalysts for Diesel Soot Oxidation Including Evaluation of an Automated Soot‐Catalyst Contact Mode

“… [16] Catalyzed DPFs offer the possibility to lower the combustion temperature of soot to T=400 °C and overcome the problem of additional heat generation. [17] Different types of catalysts like spinels,[ 18 , 19 , 20 , 21 ] perovskites[ 22 , 23 , 24 , 25 , 26 ] or CeO 2 ‐based catalysts[ 27 , 28 , 29 ] are investigated for soot oxidation. In this paper, co‐precipitated cerium‐bismuth oxides are used as catalysts for the combustion of the model Diesel soot, the commercial carbon black P90.…”

Effect of Rare Earth Metal (RE = La, Pr, Nd, Y) Doping on Co–Ce Composite Oxide and Its Application in Catalytic Combustion of Chlorobenzene

“…Although the former type is preferable in activity, the limited natural resources and low poisoning resistance hinder their wide application . In view of this, non-noble metal catalysts, especially Ce-based composite oxide catalysts, have aroused tremendous interest of researchers in recent years. − CeO 2 , with good oxygen storage capacity and easy redox couple, has been proved to be a competent enhancer of the catalytic activity and textural properties of active oxides, such as MnO x , CuO, Cr 2 O 3 , CoO x , and V 2 O 5 . Such composite oxides present excellent catalytic performance in removing various pollutants, including Hg 0 , NO, CO, and volatile organic compounds (VOCs) …”