Evaluation of metal oxide phase assembling mode inside the nanotubular pores of mesostructured silica
作者： L. Vradman , M.V. Landau , D. Kantorovich , Y. Koltypin , A. Gedanken
DOI: 10.1016/J.MICROMESO.2004.11.023
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摘要: Abstract The assembling mode of transition metal oxides and metallic guest phases (GP) embedded in nanotubular pores ordered mesostructured silicas (OMS) hosts was evaluated based on N2 adsorption–desorption data. corresponding isotherms were measured for sample sets composite materials MoO3/Al-MCM-41, WO3/SBA-15, TiO2/SBA-15, ZrO2/SBA-15, NiO/SBA-15 Ni°/SBA-15 with GP loadings the range 20–80 wt%. also characterized by XRD, HRTEM local/total EDS. It shown that a combination surface area values normalized per gram OMS pore size distribution (PSD) derived from adsorption or desorption branch isotherm distinguishes ensemble small nanoparticles less than an mesopore diameter single comparable diameter. discerns amorphous layer at walls nanoparticles. At high PSD N2-adsorption more reliably reflects filling mesopores crystalline
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sci-hub.se 参考文章(26)
Lyudmila M. Bronstein, Nanoparticles Made in Mesoporous Solids Topics in Current Chemistry. ,vol. 226, pp. 55- 89 ,(2003) , 10.1007/3-540-36408-0_3
Handbook of porous solids Wiley-VCH. ,(2002) , 10.1002/9783527618286
L. Vradman, Y. Peer, A. Mann-Kiperman, M.V. Landau., Thermal decomposition-precipitation inside the nanoreactors. High loading of W-oxide nanoparticles into the nanotubes of SBA-15. Studies in Surface Science and Catalysis. ,vol. 146, pp. 121- 124 ,(2003) , 10.1016/S0167-2991(03)80342-7
F Schüth, A Wingen, J Sauer, Oxide loaded ordered mesoporous oxides for catalytic applications Microporous and Mesoporous Materials. ,vol. 44-45, pp. 465- 476 ,(2001) , 10.1016/S1387-1811(01)00222-0
R. van Grieken, J. Aguado, M.J. López-Muñoz, J. Marugán, Synthesis of size-controlled silica-supported TiO2 photocatalysts Journal of Photochemistry and Photobiology A: Chemistry. ,vol. 148, pp. 315- 322 ,(2002) , 10.1016/S1010-6030(02)00058-8
Q.-H. Xia, K. Hidajat, S. Kawi, Effect of ZrO2 Loading on the Structure, Acidity, and Catalytic Activity of the SO42−/ZrO2/MCM-41 Acid Catalyst Journal of Catalysis. ,vol. 205, pp. 318- 331 ,(2002) , 10.1006/JCAT.2001.3424
M.V. Landau, L. Vradman, Xueguang Wang, L. Titelman, High loading TiO2 and ZrO2 nanocrystals ensembles inside the mesopores of SBA-15: preparation, texture and stability Microporous and Mesoporous Materials. ,vol. 78, pp. 117- 129 ,(2005) , 10.1016/J.MICROMESO.2004.09.023
Wei Wang, Chang-Lin Chen, Nan-Ping Xu, Chung-Yuan Mou, None, Isomerization of n-butane by gallium-promoted sulfated zirconia supported on MCM-41 Green Chemistry. ,vol. 4, pp. 257- 260 ,(2002) , 10.1039/B201361B
Aharon Gedanken, Xianghai Tang, Yanquin Wang, Nina Perkas, Yuri Koltypin, Miron V. Landau, Leonid Vradman, Mordechay Herskowitz, Using Sonochemical Methods for the Preparation of Mesoporous Materials and for the Deposition of Catalysts into the Mesopores Chemistry: A European Journal. ,vol. 7, pp. 4546- 4552 ,(2001) , 10.1002/1521-3765(20011105)7:21<4546::AID-CHEM4546>3.0.CO;2-L
M.V Landau, L Vradman, M Herskowitz, Y Koltypin, A Gedanken, Ultrasonically controlled deposition-precipitation: Co-Mo HDS catalysts deposited on wide-pore MCM material Journal of Catalysis. ,vol. 201, pp. 22- 36 ,(2001) , 10.1006/JCAT.2001.3227