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- W2048341145 abstract "Abstract Complexes of Mn(II) and Mn(III) with N 2 O 3 hydrazone ligand derived from salicylaldehyde and benzenesulphonylhydrazide have been encapsulated in zeolite Y- supercages by a diffusion method. The synthesized new materials have been characterized by combination of elemental analysis, FT-IR, UV–vis., magnetic measurements, XRD, thermal analysis (TG, DTG and DTA), as well as surface area measurements and nitrogen adsorption studies. Investigation of the stereochemistry of these incorporated chelates pointed out that, Mn(II) complex is tetrahedral with involvement of zeolite oxygen in coordination meanwhile Mn(III) complex has octahedral configuration without contribution of the lattice oxygen. The intrazeolitic hydrazone complexes are thermally stable up to 1000 °C without decomposition. Catalytic activity towards CO adsorption for these zeolite encapsulated complexes has been investigated and compared with Mn II -Y using in situ FT-IR spectroscopy. The results revealed that, Mn II (SBSH)/Y and Mn III (SBSH)/Y give an elementary peak near 1728 cm −1 indicating a selectivity to form COOH species while Mn II -Y catalyst gives a broad band in the region of 1765–1560 cm −1 assigned to different ( COOH) and carbonates species. On the other hand, the in situ FT-IR data indicate that Mn II (SBSH)/Y and Mn III (SBSH)/Y can be used as reactive catalysts in water gas shift reaction (WGSR)." @default.
- W2048341145 created "2016-06-24" @default.
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- W2048341145 date "2007-08-01" @default.
- W2048341145 modified "2023-09-25" @default.
- W2048341145 title "Physico-chemical studies and CO adsorption on zeolite-encapsulated MnII, MnIII–hydrazone complexes" @default.
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- W2048341145 doi "https://doi.org/10.1016/j.molstruc.2006.10.024" @default.
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