Clustering of Platinum Atoms in Zeolite EMT Supercage: Comprehensive Physicochemical Characterization
作者： H. Ihee , R. Ryoo , T. Bécue , C. Potvin , J-M. Manoli
DOI: 10.1016/S0167-2991(08)64078-1
关键词:
摘要: Hexagonal faujasite(EMT) has two types of supercage whereas cubic faujasite(FAU) presents only one type supercage. Using the same treatment than that for Pt clusters in a faujasite, e.g. Y zeolite, highly dispersed cluster supported on EMT zeolite was prepared. The size, location and structure entrapped investigated using 129Xe NMR spectroscopy, xenon adsorption, hydrogen chemisorption, high resolution electron microscopy(HEM) extended X-ray absorption fine structure(EXAFS). results suggest consisting 20-30 atoms is formed within three-windows EMT. size does not depend content EMT, when Pt/EMT obtained by ion exchange Pt(NH3)42+is calcined flowing O2at 573 K subsequently reduced H2at K.
elsevier.com
sci-hub.se 参考文章(11)
Suk Bong Hong, Elzbieta Mielczarski, Mark E Davis, Aromatization of n-hexane by platinum-containing molecular sieves I. Catalyst preparation by the vapor phase impregnation method Journal of Catalysis. ,vol. 134, pp. 349- 358 ,(1992) , 10.1016/0021-9517(92)90234-9
F. Delprato, L. Delmotte, J.L. Guth, L. Huve, Synthesis of new silica-rich cubic and hexagonal faujasites using crown-etherbased supramolecules as templates Zeolites. ,vol. 10, pp. 546- 552 ,(1990) , 10.1016/S0144-2449(05)80310-0
Ryong Ryoo, Chanho Pak, B.F. Chmelka, Macroscopic or microscopic information of Y zeolite from 129Xe n.m.r. line splitting Zeolites. ,vol. 10, pp. 790- 793 ,(1990) , 10.1016/0144-2449(90)90063-W
Jeong Guk Kim, Son Ki Ihm, Jeong Yong Lee, Ryong Ryoo, Formation of a small palladium cluster by anchoring on a multivalent cation in a zeolite supercage studied by xenon adsorption The Journal of Physical Chemistry. ,vol. 95, pp. 8546- 8552 ,(1991) , 10.1021/J100175A026
Ryong Ryoo, Sung June Cho, Chanho Pak, Jeong Guk Kim, Son Ki Ihm, Jeong Yong Lee, Application of the xenon-adsorption method for the study of metal cluster formation and growth on Y zeolite Journal of the American Chemical Society. ,vol. 114, pp. 76- 82 ,(1992) , 10.1021/JA00027A011
J. Fraissard, T. Ito, 129Xe.n.m.r. study of adsorbed xenon: a new method for studying zeolites and metal-zeolites Zeolites. ,vol. 8, pp. 350- 361 ,(1988) , 10.1016/S0144-2449(88)80171-4
J.A. Martens, P.A. Jacobs, S. Cartlidge, Investigation of the pore architecture of CSZ-1 zeolites with the decane test reaction Zeolites. ,vol. 9, pp. 423- 427 ,(1989) , 10.1016/0144-2449(89)90097-3
DH Ahn, Jae Sung Lee, M Nomura, WMH Sachtler, Giuliano Moretti, Seong-Ihl Woo, Ryong Ryoo, Characterization of zeolite-supported Pt-Cu bimetallic catalyst by xenon-129 NMR and EXAFS Journal of Catalysis. ,vol. 133, pp. 191- 201 ,(1992) , 10.1016/0021-9517(92)90197-P
Jan L. Lievens, Johannes P. Verduijn, Anton-Jan Bons, Wilfried J. Motier, Cation site energies in dehydrated hexagonal faujaste (EMT) Zeolites. ,vol. 12, pp. 698- 705 ,(1992) , 10.1016/0144-2449(92)90118-9
Ryong Rayoo, Sung June Cho, Chanho Pak, JeongYong Lee, Clustering of platinum atoms into nanoscale particle and network on NaY zeolite Catalysis Letters. ,vol. 20, pp. 107- 115 ,(1993) , 10.1007/BF00772602