%0 Journal Article %A Li, Weiman %A Liu, Haidi %A Chen, Yunfa %D 2020 %T Fabrication of MnOx–CeO2‑Based Catalytic Filters and Their Application in Low-Temperature Selective Catalytic Reduction of NO with NH3 %U https://acs.figshare.com/articles/journal_contribution/Fabrication_of_MnO_i_sub_x_sub_i_CeO_sub_2_sub_Based_Catalytic_Filters_and_Their_Application_in_Low-Temperature_Selective_Catalytic_Reduction_of_NO_with_NH_sub_3_sub_/12592325 %R 10.1021/acs.iecr.0c00131.s001 %2 https://acs.figshare.com/ndownloader/files/23567876 %K dust removal ability %K ratio %K NH 3 Catalytic filters %K SCR %K Mn %K pressure drop increase %K NH 3 %K temperature range %K CF %K mullite filters %K conversion %K surface oxygen species %K loading weight %X Catalytic filters (CFs) were fabricated by coating manganese and ceria oxides on mullite filters with a high porosity and a relatively low pressure drop and were used in the selective catalytic reduction of NOx by NH3 (NH3-SCR). The influences of Mn/Ce ratios and loading weights were investigated. The CF with a Mn/Ce molar ratio of 6/4 can achieve >90% NO conversion in the temperature range of 120–250 °C, owing to abundant surface oxygen species, Ce3+, and Mn4+ on it. NO conversion in the temperature range of 120–250 °C increased when the loading weight increased from 1.05 to 4.18%; however, when the loading weight was further increased, the catalytic activity remained unchanged. A possible growth mechanism of catalyst particles on mullite filters was proposed: the active species tended to disperse finely when the loading weight was lower than ∼4.00%; however, when the loading weight was more than 4.00%, the particles tended to grow at the conjunction of fibers, leading to a considerable pressure drop increase. The CFs showed a dust removal ability of more than 99% in a pilot experiment, which may provide a chance for the coprocessing of dust and NOx in practical use. %I ACS Publications