| Literature DB >> 33127116 |
Zhang Lei1, Shu Hao2, Jia Yang3, Lei Zhang4, Bai Fang5, Kuang Wei6, Qi Lingbo6, Shang Jin6, Chao Wei7.
Abstract
Nitrogen oxides (NOx) are the main pollutants of air, which mainly come from the combustion of coal and fossil fuels. In this paper, with fly ash used as the catalyst carrier, the effects on the denitration and sulfur resistance of Mn-Ce loading sequence and molar ratio were studied. The catalyst was characterized and analyzed by XRD, XPS, SEM. The results show that when Mn-Ce bimetal is loaded at the same time, Mn ions enter the CeO2 lattice to form a solid solution of Mn-O-Ce fluorite structure, which makes the catalyst has the best denitration and sulfur resistance. The catalyst denitration performance increases first and then decreases with the increase of Mn-Ce molar ratio. When Mn-Ce is 1:1, the denitration efficiency is higher, the total conversion rate of NO is the highest and the deactivation time is the longest, the catalyst is resistant to sulfur performance is also the best.Entities:
Keywords: Catalyst; Fly ash; Low temperature denitration; SCR(Selective catalytic reduction); Solid waste recycling
Year: 2020 PMID： 33127116 DOI： 10.1016/j.chemosphere.2020.128646
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086