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Affiliation of Author(s):能源与动力工程学院

Journal:Korean Journal of Chemical Engineering

Key Words:Fe0.7Mn0.15Mg0.15Oz Catalyst, γ-Fe2O3 Catalyst, Low-temperature SCR, H2O and SO2 Resistance, Catalyst Activity

Abstract:SCR activity at low temperature over iron oxide catalyst was prominently optimized by adding manganese
and magnesium. Fe0.7Mn0.15Mg0.15Oz(n(Mn)/[n(Fe)+n(Mn)+n(Mg)])=0.15 and n(Mg)/[n(Fe)+n(Mn)+n(Mg)]=0.15)
presented better performance in the low temperature SCR and NOx conversion of 90% could be achieved over 125 oC.
Meanwhile, part of manganese and magnesium oxides were highly dispersed on the catalyst surface in an amorphous
phase to react with iron oxide to form solid solution. Manganese and magnesium dopants could optimize the pore
structure and distribution of γ-Fe2O3 to enhance the surface area and pore volume. Moreover, O2 participated in SCR
reaction at a faster rate than NH3. In addition, the effect of SO2 was proved to be irreversible, whereas the inhibition of
H2O could be rapidly removed after its removal.

All the Authors:Liting Xu,Shengli Niu,Dong Wang,Qi Zhang,Jing Li

First Author:Kang Zhang

Indexed by:Journal paper

Correspondence Author:Chunmei Lu*

Document Code:EF05516EB0014DC5940FF4D3A1D28296

Discipline:Engineering

First-Level Discipline:Power Engineering and Engineering Thermophysics

Document Type:J

Volume:34

Issue:6

Page Number:1858-1866

Translation or Not:no

Date of Publication:2017-06-01

Included Journals:SCI