Promotional effect of phosphorylation on CeSn0.8W0.6Ox/TiAl0.2 Si0.1Oy for NH3-SCR of NO from marine diesel exhaust

作者：Han Bing; Shen Yuesong^*; Zhu Shemin^*; Liu Youlin; Shen Shubao

来源：Journal of Rare Earths, 2016, 34(10): 1010-1016.

DOI：10.1016/S1002-0721(16)60128-X

• CeSn0.8W0.6Ox/TiAl0.2Si0.1Oy
• phosphorylation
• diesel engine exhaust
• sulfur-resisting
• NH3-SCR
• NO conversion
• rare earths

A series of phosphorylation and blank CeSn0.8W0.6Ox/TiAl0.2Si0.1Oy catalysts prepared by extrusion molding were tested for NH3-SCR of NO, and were characterized by techniques of X-ray diffraction (XRD), Brumauer-Emmett-Teller (N-2-BET), environmental scanning electron microscope (ESEM), temperature programmed reduction (H-2-TPR) and temperature programmed desorption (NH3-TPD). Effects of phosphorylation on catalytic activity and sulfur-resisting performance of the CeSn0.8W0.6Ox/TiAl0.2Si0.1Oy for NH3-SCR of NO were mainly studied. Results showed that the phosphorylation improved the catalytic activity and sulfur-resisting performance in an active temperature window of 300-440 degrees C, and the phosphorylation catalyst with 0.4 wt.% H3PO4 exhibited the best catalytic performance and the strongest sulfur-resisting performance. Analysis showed that the phosphorylation increased specific surface area, enhanced the surface acidity and improved redox properties.

• 出版日期2016-10
• 单位南京工业大学