Abstract
Pt/Mg/Al metal oxide catalysts were prepared by impregnation and co-precipitation methods, respectively. These samples were characterized by BET, XRD and NO-TPD; their NO X storage property and adsorbing intermediate species were investigated with NSC and FTIR. The results showed that the prepared methods exert significant influence on the physical structure properties and the adsorption abilities of NO. (Pt)/Mg/Al samples prepared by impregnation (IM) have larger specific areas and higher NO X storage capacity than (Pt)/Mg/Al catalysts prepared by co-precipitation (CP). The intermediate species of NO adsorbing process indicated that NO was firstly adsorbed as bridged nitrites both on Pt/Mg/Al (IM) and on Pt/Mg/Al (CP), then on Pt/Mg/Al (IM) the nitrites transferred into monodentate and bidentate nitrate species while on Pt/Mg/Al (CP) the nitrites only transferred into monodentate nitrate species.
Similar content being viewed by others
References
Takahashi N., Shinjoh H., Iijima T., Suzuki T., Yamazaki K., Yokota K., Suzuki H., Miyoshi N., Matsumoto S., Tanizawa T., Tanaka T., Tateishi S., Kasahara K. (1996) Catal. Today 27:63
Castoldi L., Nova I., Lietti L., Forzatti P. (2004) Catal. Today 96: 43
Nova I., Castoldi L., Lietti L., Tronconi E., Forzatti P. (2002) Catal Today 75:431
Wei X., Liu X., Deeba M. (2005) Appl Catal B 58:41
Liu Z., Anderson J.A. (2004) J. Catal. 224:18
Kabin K.S., Muncrief R.L., Harold M.P. (2004) Catal. Today 96:79
Sedlmair Ch., Seshan K., Jentys A., Lercher J.A. (2002) Catal. Today 75:413
N.W. Cant, M.J. Patterson (2002) Catal. Today 73:271
Fanson P.T., Horton M.R., Nicholas W., Lauterbach J. (2003) Appl. Catal. B 46:393
Yamazaki K., Suzuki T., Takahashi N., Yokota K., Sugiura M. (2001) Appl. Catal. B 30:459
G. Centi, G. Firnasari, C. Gobbi, M. Livi, F. Trifiró, A. Vaccari. Catal. Today 73 (2002) 287.
Fornasari G., Trifiró F., Vaccari A., Prinetto F., Ghiotti G., Centi G. (2002) Catal. Today 75:421
Westerberg B., Fridell E. (2001) J. Mol. Catal. A: Chem. 165:201
Sedlmair C., Seshan K., Jentys A., Lercher J.A. (2003) J. Catal. 214:308
Acknowledgments
This work was financially supported by the National Natural Science foundation of China, and the National High-Tech Research and Development (863) Program of China (Grant No. 2006AA060301).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, J., Li, W., Kang, S. et al. Comparison of NO adsorbing ability and process on Pt/Mg/Al oxide catalysts prepared by different methods. Catal Lett 116, 155–160 (2007). https://doi.org/10.1007/s10562-007-9104-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10562-007-9104-y