XPS characterization of a synthetic Ti-containing MFI zeolite framework: the titanosilicalites, TS-1
نویسندگان
چکیده
منابع مشابه
MFI zeolite nanosheets with post-synthetic Ti grafting for catalytic epoxidation of bulky olefins using H2O2.
The external surfaces of the surfactant-directed, 2.5 nm MFI zeolite nanosheets were grafted with Ti using titanium(IV) butoxide. The Ti/MFI nanosheets exhibited a remarkable catalytic performance for epoxidation of bulky olefins using H2O2 as an oxidant, in comparison to the mesoporous silicas with amorphous frameworks.
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The catalytic performances of titanium species in TS-1 zeolite for the hydroxylamine formation have been investigated using the density functional theory with the ONIOM scheme. The reaction process for making hydroxylamine is divided into two steps: (i) the H2O2 decomposition over the Ti species to produce the peroxo titanium species and (ii) the NH3 oxidation over the generated oxidizing speci...
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Ultrathin MFI-zeolite nanosheets can be packed on porous supports to create molecular sieve membranes. The nanosheets on porous support reduce morphological damage seen in regular MFIzeolite crystals [1]. MFI-zeolite belongs to pentasil family of zeolites where the periodic building unit (PerBU) is composed of 12 interconnected SiO4 tetrahedral (T12) units of 41m2 (D2d) symmetry [2]. Rotation o...
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Using hydrothermal synthesis process a series of Mobil Five (MFI) zeolites were synthesized with silica to alumina ratio (SAR) of 50, 100 and 200. The synthesized MFI zeolites were used to exchange with 0.5%, 1.0% and 2.0% Ca(NO3)2 solutions for modification of MFI zeolites to Ca-MFI zeolite. The formation of MFI zeolite phases was identified by XRD and FT-IR analysis. TGA...
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ژورنال
عنوان ژورنال: Surface and Interface Analysis
سال: 2008
ISSN: 0142-2421,1096-9918
DOI: 10.1002/sia.2739