Topic
Selective catalytic reduction
About: Selective catalytic reduction is a research topic. Over the lifetime, 10502 publications have been published within this topic receiving 226291 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the authors analyzed the synergistic effect of the combination of copper oxides and cerium oxides on Hg0 oxidation, and explored the involved mechanisms, which would help obtaining maximum Hg 0 oxidation co-benefit from SCR units in coal-fired power plants.
76 citations
TL;DR: In this article, the VO2+ ion-exchanged TiO2-pillared clays (VO2+PILC) were investigated for selective catalytic reduction of nitric oxide by ammonia in the presence of oxygen.
76 citations
TL;DR: A flow cell was used for ESR monitoring of the state of copper ions in Cu-ZSM-5 in situ at 20-500°C in a He stream containing C3H6 (or C2H5OH), NO, and O2 as mentioned in this paper.
76 citations
TL;DR: In this paper, the performance of Fe−BEA as a selective catalytic reduction (SCR) catalyst was experimentally studied and the results indicated that the NO reduction was more sensitive at low temperatures to changes in the oxidation state of iron caused by hydrothermal aging than at higher temperatures.
Abstract: The hydrothermal stability of Fe−BEA as a selective catalytic reduction (SCR) catalyst was experimentally
studied. Cordierite supported Fe−BEA samples were hydrothermally treated at 600 and 700 °C for 3−100 h to capture the effect of aging time and temperature. Before and after aging the samples were characterized with BET, XPS, XRD, and NH3-TPD. The catalytic performance of the samples with respect to NO oxidation, NH3 oxidation, and NO reduction (NH3-SCR) was studied by flow reactor experiments to correlate changes of the catalytic performance with structural changes of the zeolite and the iron phases. The NH3-SCR experiments did not show any significant decrease in activity after a short time of aging (3 h at 700 °C)even though the ammonia storage capacity decreased by 40% and the oxidation state of iron slightly increased. A longer time of aging resulted in decreased activity for NO reduction during low temperatures (150−300 °C), while at higher temperatures
(400−500 °C) the activity remained high. The results indicate that the NO reduction is more sensitive at low temperatures to changes in the oxidation state of iron caused by hydrothermal aging than at higher temperatures. Furthermore, a maximum in activity for NO oxidation and increased oxidation state of iron (Fe3+) indicate Fe2O3 particle growth.
76 citations
TL;DR: A reliable PCDD/F-destruction by means of oxidation by the catalyst to typical values of 0.001 ng TEQ/Nm3 has been demonstrated.
76 citations