ZrO2 Modified MnOx/Attapulgite Catalysts for NH3-SCR of NO at Low Temperature

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Qi Xu¹  Fennv Han¹  Yunjie Gu²  Jingling Shao¹  Zhe Tang¹  Feng Xiao²  Hongli Zhu¹ 

[1] School of Chemical and Biological Engineering, Yancheng Institute of Technology;School of Petrochemical Engineering, Changzhou University

关键词: Low Temperature;    NH3-SCR Catalyst;    Manganese Oxide;    Zirconium;    Attapulgite;   

DOI  :  10.1252/jcej.14we226

来源: Maruzen Company Ltd

【 摘 要 】

References(37)Cited-By(1)A series of Zirconium modified MnOx/Attapulgite (aZr–Mn/ATP) catalysts were synthesized by sol–gel method and evaluated for their performance in the low-temperature NH3-SCR of NO and resistance to sulfur dioxide (SO2). It was found that the NO conversion of Mn/ATP catalyst significantly improved after adding Zr. Among the catalysts investigated, the 4%Zr–Mn/ATP catalyst exhibited the highest catalytic activity, 96% NO conversion at 200°C, almost 100% N2 selectivity in the whole test temperature range and good resistance to SO2. The properties of catalysts were characterized by XRD, FTIR spectra, SEM and N2 adsorption. In the catalyst, ATP is the support which supplies high surface areas, manganese (Mn3O4 and MnO2) as the main active component plays an important role for NO reduction and zirconium (ZrO2) acts as the auxiliary catalyst which can improve the diffusion of Mn, boost the low-temperature reduction performance and enhance the N2 selectivity of the catalyst.

【 授权许可】

Unknown