Background and overview[1]
Iron oxalate is widely used, such as the preparation of polyglycidol surface-grafted ferromagnetic nanoparticles, using iron oxalate as the precursor compound, triethylene glycol as the solvent, and glycidol as the surface modifier, through a one-pot method The synthesis method is: mix iron oxalate salt with a highly polar high-boiling solvent with hydroxyl group, first react at 200℃ for 1-10h, and then react at 280-350℃ for 1-10h. After the reaction is completed, it will naturally Cool to 25℃-120℃; then add glycidyl monomer and mix evenly, react at 50-200℃ for 1-24h, then add a polar organic solvent to precipitate, and the solid obtained by separation is polyglycidol surface-grafted iron. Magnetic nanoparticles.
Application
Iron (III) oxalate hexahydrate is also known as iron oxalate or ferric oxalate. Light yellow flake crystal or powder. Decomposes when heated to 100°C. Very soluble in water, soluble in acid, insoluble in alcohol. poisonous. It is produced by the action of ferric salt and oxalate. Used as catalyst, toner, analytical reagent, etc.
Related research[2]
There are experimental studies on the solid-state reaction of Li2CO3±iron (III) oxalate dihydrate and Li2CO3 iron (III) oxalate hexahydrate. Through high-resolution TGA, XRD and DSC, it has been shown that Fe2O3 is formed starting from iron (II) oxalate, which starts to react with Li2CO3 at a reaction temperature well below its spontaneous decomposition temperature (about 6508C). The reaction product is a mixture of lithium ferrites (LiFe5O8 and LiFeO2), the relative amounts of which depend on the starting composition. The microstructure of the ferrite obtained by this system appears to be significantly different from the microstructure of the same compound prepared by the Li2CO3±Fe2O3 reaction system. High-resolution TGA combined with TG/FT±IR and diffuse reflectance FT±IR spectroscopy reveals a strong relationship between iron(III) oxide and lithium carbonate in the case of the second system, even at lower temperatures than Reactions can also occur, as is the case with iron(III) oxalate hexahydrate. The reaction mechanism is quite complicated, but the reaction product is still the same mixture of lithium ferrite. SEM micrographs show that in this case the microstructure of ferrite is very similar to that formed starting from the reaction system Li2CO3±Fe2O3.
Main reference materials
[1] Dictionary of Chemical Substances
[2] Solid state reaction study in the systems Li2CO3±FeC2O42H2O and Li2CO3±Fe2(C2O4)36H2O
