Synthesis and catalytic properties of iron-cerium phosphate prepared in ethylene glycol using additives

摘要

The effects of cerium substitution,use of additives,and heating temperature on the chemical composition and catalytic activity of iron phosphate were evaluated.Iron-cerium phosphate was prepared from iron nitrate,ammonium cerium nitrate,and sodium phosphate in ethylene glycol using sodium dodecyl-sulfate or acetylacetone as additive.The chemical composition,particle shape and size distribution of the obtained samples were respectively evaluated based on ICP and XRD,SEM,and laser diffraction/scattering analysis.The catalytic activity was evaluated based on the decomposition of the complex formed from formaldehyde,ammonium acetate,and acetylacetone.XRD peaks corresponding to FePO_(4) were observed for the samples heated at 600°Cwhereas samples treated at lower temperatures were amorphous.Iron-cerium phosphates heated at 200°Cand 400°Cexhibited high catalytic activity for the decomposition of the aforementioned complex.