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Synthesis of Nano‐γ‐Ferric Oxide by Thermolysis of the 2‐Mercapto‐5‐Methylpyridine‐N‐Oxide‐Iron(III) Complex via Factorial Design
Author(s) -
Edrissi M.,
Soleymani M.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000556
Subject(s) - thermal decomposition , ferric , oxide , particle size , factorial experiment , chemistry , nuclear chemistry , inorganic chemistry , microanalysis , decomposition , chelation , thermal analysis , infrared spectroscopy , thermal , organic chemistry , statistics , physics , mathematics , meteorology
2‐Mercapto‐5‐methylpyridine‐N‐oxide (MMPNO) and its sodium salt (NaMMPNO) were synthesized. The reaction of the latter with Fe 3+ generates Fe(MMPNO) 3 chelate. The thermolysis of this chelate at 350 °C yielded highly pure reddish‐brown γ ‐Fe 2 O 3 nanocrystallites with an average particle size of 6.2 nm, a particle size range of 4.2 to 14.8 nm, and a specific surface area of 51.5 m 2 g –1 . The thermolysis process was optimized using the 2 2 fractional design. Quantitative tests and characterization of products were carried out by UV‐vis spectroscopy, XRD, LLS, SEM, TGA, BET, TEM, FT‐IR, elemental microanalysis, and classical analytical measurements.