Use of V2O5/Ti-PILC Catalyst for the Reduction of NO by NH3

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

IN-SIK NAM¹  HEE SUNG YANG²  SEOK LYONG SONG²  HO JEONG CHAE¹  IK DO HUR² 

[1] Department of Chemical Engineering, School of Environmental Engineering, Pohang University of Science and Technology (POSTECH);Hyundai Heavy Industry Co. Ltd.

关键词: PILC;    Vanadia;    Selective Catalytic Reduction;    Freeze-Drying;    TEM;   

DOI  :  10.1252/jcej.34.148

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(2)Titania-pillared interlayer clays (Ti-PILCs) exhibited peculiar physicochemical characteristics as catalyst supports compared to that of titania for the reduction of NO by NH3. Korean natural bentonite (KNB) was employed as a basic component of PILC due to its high pillaring capacity. For the freeze-dried Ti-PILC, the development of needle-like crystallites revealing the formation of a “house-of-cards” structure by delamination of long-ranged layered structure of Ti-PILC has been observed. Freeze-drying creates a unique pore structure of Ti-PILC catalyst such as multi-modal pore size distribution simultaneously containing micropores and meso- or macropores in the pore network. In particular, V2O5/Ti-PILC catalyst exhibits high performance of NO removal by NH3 mainly due to the strong catalyst surface acidity and redox properties examined by NH3 TPD and TPR-TPO studies, respectively. Without the addition of the catalyst promoter, WO3 and MoO3 to the catalyst, V2O5/Ti-PILC catalyst shows competitive NO removal activity to a commercial one.

【 授权许可】

Unknown