Title :
NOx Storage Performance at Low Temperature over Pt/BaO/Al_2O_3 by Plasma Treatment
Author :
Qiu-Rong, Li ; Ming-Hua, Bai ; Ji-Ming, Hao ; Jun-Hua, Li
Author_Institution :
Coll. of Environ. & Chem. Eng., Yanshan Univ., Qinhuangdao, China
Abstract :
The study on NOx Storage Performance at low temperature over Pt/BaO/Al2O3 by plasma treatment in this paper, the structure and activity of catalysts are characterized and tested respectively by using BET, TPR, SEM, TPD,XRD and FTIR. The results of FTIR spectra are shown that catalyst by non-plasma treatment has weak oxidbillity for NO, on the surface of catalyst, there are major adsorption species of bridge nitrite, and a small quantity of monodentate nitrate, bidentate nitrate and NO2 adsorbing species. There are major monodentate nitrate on the surface of catalysts by plasma treatment, the catalysts by plasma treatment have highly metal dispersibility and biggish specific surface area, which should improve NOx storage capacity at low temperature.
Keywords :
Fourier transform spectra; X-ray diffraction; adsorption; catalysts; chemical technology; infrared spectra; nitrogen compounds; plasma materials processing; scanning electron microscopy; BET; FTIR spectra; NOx; NOx storage performance; Pt-BaO-Al2O3; SEM; TPD; TPR; XRD; adsorption species; bidentate nitrate; bridge nitrite; catalysts; metal dispersibility; monodentate nitrate; nonplasma treatment; Aluminum oxide; Barium; Plasma temperature; Scanning electron microscopy; Surface treatment; NOx Storage; Pt/BaO/Al_2O_3; non-thermal plasma;
Conference_Titel :
Information Engineering (ICIE), 2010 WASE International Conference on
Conference_Location :
Beidaihe, Hebei
Print_ISBN :
978-1-4244-7506-3
Electronic_ISBN :
978-1-4244-7507-0
DOI :
10.1109/ICIE.2010.191
