Premium
Mn‐Fe‐Ce Coating onto Cordierite Monoliths as Structured Catalysts for NO Catalytic Oxidation
Author(s) -
Han Wen,
Yi Honghong,
Tang Xiaolong,
Zhao Shunzheng,
Gao Fengyu,
Zhang Xiaodong,
Ma Chuanbo,
Song Lingling
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900834
Subject(s) - catalysis , cordierite , physisorption , coating , materials science , catalytic oxidation , space velocity , adsorption , chemical engineering , dispersion (optics) , specific surface area , monolith , desorption , inorganic chemistry , nuclear chemistry , chemistry , selectivity , nanotechnology , organic chemistry , physics , optics , engineering
Abstract A series of Mn‐Fe−X (X=Ce, W, Cu, Co) mixed oxides doped on cordierite monoliths as structured catalysts based monolithic for NO oxidation has been investigated. The results showed that Mn−Fe‐Ce/Al 2 O 3 /CC sample exhibited the best activity, for which a maximal NO conversion (72%) could be attained at 250 °C with the GHSV of 5971 h −1 . The effects of the preparation parameters including the catalyst preparation methods and the coating material on the catalytic performance for NO catalytic oxidation was also investigated. The XRD and SEM‐EDS also indicated the coating material had a significant influence on specific surface area, surface morphology, which resulted in dierences in the catalytic activity of NO catalytic oxidation. The NO+O 2 ‐TPD results indicated that different general procedures to prepare Mn−Fe‐Ce based monolithic catalysts had a great influence on the catalytic oxidation activity of NO and Mn−Fe‐Ce/Al 2 O 3 /CC catalyst was beneficial to NO adsorption and NO 2 desorption, which increased activity of catalytic oxidation of NO. The physisorption of N 2 revealed that the catalyst synthesized with Al 2 O 3 presented a higher BET specific surface area, more abundant pore structure, and better dispersion of catalysts’ active components which were favorable for catalytic oxidation reaction of NO.