Synthesis and Characterization of Cluster-Derived PtRu5Sn Catalysts

作者: Karen J. Uffalussy , Burjor K. Captain , Richard D. Adams , Ana B. Hungria , John R. Monnier

DOI: 10.1021/CS2003559

关键词:

摘要: Magnesia-supported trimetallic Pt–Ru–Sn catalysts prepared through a cluster and conventional synthetic route have been investigated in terms of their structural properties catalytic activity for the hydrogenation citral. FTIR results indicate that majority stabilizing ligands remain attached to PtRu5(μ-SnPh2)(C)(CO)15 used following impregnation onto MgO support. Under H2 reduction conditions, partial full ligand removal are observed at 473 573 K, respectively. HRSTEM analysis shows cluster-derived samples exhibit significantly smaller average metal particle sizes, as well narrower size distributions than corresponding conventionally ones. EDS measurements show catalysts, particles present nature, with compositions similar those original cluster. In contrast, materials contain mostly bimetallic monometallic...

参考文章(45)
Takanori Mizushima, Kazuyuki Tohji, Yasuo Udagawa, Akifumi Ueno, EXAFS and IR Study of the CO-Adsorption-Induced Morphology Change in Ru Catalysts Journal of the American Chemical Society. ,vol. 112, pp. 7887- 7893 ,(1990) , 10.1021/JA00178A006
E. Guglielminotti, F. Boccuzzi, M. Manzoli, F. Pinna, M. Scarpa, Ru/ZrO2 Catalysts: I. O2, CO, and NO Adsorption and Reactivity Journal of Catalysis. ,vol. 192, pp. 149- 157 ,(2000) , 10.1006/JCAT.2000.2835
Ludmila Kubelková, Jan Vylita, Libor Brabec, Lucie Drozdová, Tibor Bolom, Jana Nováková, Günter Schulz-Ekloff, Nils I. Jaeger, High nuclearity Pt carbonyls in alkali-metal X zeolites Journal of the Chemical Society, Faraday Transactions. ,vol. 92, pp. 2035- 2041 ,(1996) , 10.1039/FT9969202035
J GOODWIN, CO adsorption on ion-exchanged Ru zeolite catalyst Journal of Catalysis. ,vol. 64, pp. 482- 486 ,(1980) , 10.1016/0021-9517(80)90520-5
Konstantin I. Hadjiivanov, IR study of CO and H2O coadsorption on Ptn+/TiO2 and Pt/TiO2 samples Journal of the Chemical Society, Faraday Transactions. ,vol. 94, pp. 1901- 1904 ,(1998) , 10.1039/A801892H
B.C. Gates, H.H. Lamb, Supported metals and supported organometallics Journal of Molecular Catalysis. ,vol. 52, pp. 1- 18 ,(1989) , 10.1016/0304-5102(89)80078-1
John Meurig Thomas, Richard D. Adams, Erin M. Boswell, Burjor Captain, Henrik Grönbeck, Robert Raja, Synthesis, characterization, electronic structure and catalytic performance of bimetallic and trimetallic nanoparticles containing tin. Faraday Discussions. ,vol. 138, pp. 301- 315 ,(2008) , 10.1039/B706151J
A SIANI, O ALEXEEV, B CAPTAIN, G LAFAYE, P MARECOT, R ADAMS, M AMIRIDIS, Synthesis of cluster-derived PtFe/SiO2 catalysts for the oxidation of CO Journal of Catalysis. ,vol. 255, pp. 162- 179 ,(2008) , 10.1016/J.JCAT.2008.01.031
J.N Coupé, E Jordão, M.A Fraga, M.J Mendes, A comparative study of SiO2 supported Rh–Sn catalysts prepared by different methods in the hydrogenation of citral Applied Catalysis A-general. ,vol. 199, pp. 45- 51 ,(2000) , 10.1016/S0926-860X(99)00525-6