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• W1983698982 endingPage "2007" @default.
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• W1983698982 abstract "Iron-modified mesoporous and microporous zeolite materials, namely FSM-16 and NaY as well as dealuminated NaY (del-NaY), were prepared using cyclopentadienyl iron dicarbonyl diamer [(C5H5)Fe(CO)2]2 via a chemical vapor deposition (CVD) technique. XRD, FTIR, TG/DSC, N2 adsorption and Mössbauer measurements were used to characterize the various materials. An isomorphous substitution of Fe3+ into the framework of NaY zeolite was accomplished as determined from the Mössbauer results (IS≤0.3) as well as from the increase in the unit cell volume. As a further confirmation, some framework IR bands (780 and 574 cm−1) showed a shift towards lower frequencies upon iron incorporation along with the existence of a band at 686 cm−1 ascribed to SiOFe linkages. The latter band was emphasized on the basis of comparison of NaY before and after the CVD treatment with the precursor of the Fe complex. Two types of octahedral Fe3+ components were revealed in FSM-16 and del-NaY samples specified as intrazeolitic iron oxide clusters and α-Fe2O3 species, which were localized on the external surfaces of zeolites and occupied small percentages (18–22%) compared with the former species. The surface area of the support NaY was preserved after the CVD treatment rather than FSM-16 that showed a reduction (24%). The catalytic activities of various samples for the liquid phase hydroxylation of phenol using H2O2 were found to be in the order: Fe/NaY>Fe/FSM-16>Fe/del-NaY. The higher activity of the Fe/NaY sample was attributed to the high dispersity of Fe ions that are located in framework positions and to the high crystallinity." @default.
• W1983698982 created "2016-06-24" @default.
• W1983698982 creator A5038607424 @default.
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• W1983698982 date "2003-12-01" @default.
• W1983698982 modified "2023-10-09" @default.
• W1983698982 title "Characterization of intrazeolitic Fe3+ prepared by chemical vapor deposition of [(C5H5)Fe(CO)2]2 inside NaY and FSM-16 zeolites and their catalytic activities towards phenol hydroxylation" @default.
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• W1983698982 doi "https://doi.org/10.1016/j.materresbull.2003.09.015" @default.
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