Preparation of cerium oxalate from spent iron-potassium catalyst for dehydrogenation of isoamylenes into isoprene

Abstract

© 2015 Pleiades Publishing, Ltd. The cerium recovery in the oxalate form from spent iron-potassium catalyst for dehydrogenation of isoamylenes into isoprene was studied. The optimum conditions allowing preparation of the pure product with high degree of recovery were found. It was proved by X-ray diffraction, thermal gravimetric analysis, differential scanning calorimetry, and X-ray fluorescence analysis that the product obtained by the precipitation was cerium oxalate decahydrate containing no less than 98 wt % main substance.