Results 211 to 220 of about 6,449,215 (271)
Some of the next articles are maybe not open access.
Characterization of mesoporous carbons synthesized with SBA-16 silica template
Journal of Materials Chemistry, 2005The structure of ordered mesoporous carbons (OMC) synthesized with sucrose, furfuryl alcohol or acenaphthene using the SBA-16 mesoporous silica template with cubic Imm structure has been investigated with X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and N2 adsorption.
Kim, TW +6 more
openaire +2 more sources
[Structure and adsorption characterization of SBA-16 and functionalized materials].
Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi, 2012In this study we synthesized a micro- and mesoporous material, SBA-16. And later on we functionalized it with octyltrimethoxysilane and octadecyltrimethoxysilane, respectively. The materials of SBA-16 and its functionalized form were characterized by nitrogen adsorption isotherms at 77K, small angle X-ray scattering (SAXS), Fourier-transform infrared ...
Zongfu, Zheng +5 more
openaire +1 more source
Synthesis of tetrakaidecahedronal SBA-16 by acidity adjusting
2007Tetrakaidecahedronal SBA-16 (cubic Im 3 m) has been synthesized in PEO 106 -PPO 70 -PEO 106 ( F127 ) template solution without inorganic salt by adjusting acidity at low temperature. Due to the pH-dependence of mesoporous silica morphology, the shapes of resultant materials show an evolution from irregular sphere → dodecahedron → tetrakaidecahedron ...
openaire +1 more source
Enhanced luminescence of CaWO4:Eu3+ loaded in SBA-16.
Journal of nanoscience and nanotechnology, 2014CaWO4:Eu3+/SBA-16 composites with various molar ratios of Eu3+ to CaWO4(x) were successfully synthesized by impregnation and subsequent hydrothermal treatment. The physicochemical properties of the resultant composites were well characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), N2 adsorption-desorption,
Chunfang, Du +3 more
openaire +1 more source
Adsorption studies of thermal stability of SBA-16 mesoporous silicas
Applied Surface Science, 2007Abstract Cage-like ordered mesoporous silicas, SBA-16, and ethane-silicas with cubic (Im3m) and (Fm3m) symmetry groups were synthesized with addition of sodium chloride by using tetraethyl orthosilicate (TEOS) as silica precursor, 1,2-bis(triethoxysilyl)ethane (BTESE) as bridged silsesquioxane and poly(ethylene oxide)-block-poly(propylene oxide ...
R.M. Grudzien +2 more
openaire +1 more source
Direct sol–gel synthesis of doped cubic mesoporous SBA-16 monoliths
Microporous and Mesoporous Materials, 2014Abstract Porous monoliths of a 3D cubic cage mesostructured silica (SBA-16 type) and of composites containing Co (5% wt.) and FeCo (5% wt.) nanophases dispersed in the SBA-16 type matrix were prepared following a templated-gelation method. Optically clear disk-shaped monoliths with diameter around 10 cm were obtained whose absorption spectra are ...
Carta D +6 more
openaire +4 more sources
Synthesis of hollow silica spheres SBA-16 with large-pore diameter
Materials Letters, 2011Hollow silica SBA-16 spheres with cubic ordered mesoporous shells were synthesized by an emulsion-templating method, using Pluronic F127 as a structure-directing agent.
Mohamed A. Ballem +3 more
openaire +1 more source
Highly Efficient VOx/SBA-16 Mesoporous Catalyst for Hydroxylation of Benzene
Chinese Journal of Catalysis, 2008Abstract Highly dispersed vanadium oxide supported on mesoporous SBA-16 (VO x /SBA-16) was prepared by the impregnation method and characterized by XRD, TEM, N 2 adsorption, and Raman spectroscopy. The VO x /SBA-16 catalysts retained the cubic cage-like pore structure of SBA-16, and the vanadia species was highly dispersed and mainly in the ...
Yujun ZHU +4 more
openaire +1 more source