Coordination compounds as raw materials for mixed oxides

Thermal behaviour and non-isothermal decomposition kinetics of some Nd(III) coordination compounds

“…The experimental points lie on the curve, thus indicating the validity of the applied method as well as the accuracy of the results. The fractional and higher than unity value of the reaction order for reaction (5) as well as for reactions (1) and (3) can be assigned to the decomposition of structural units consisting of more than one molecule which coexist in variable ratios in the investigated system. Comparison between the results listed in Table 2 shows that the values of the non-isothermal kinetic parameters for the inv-estigated reactions are very close, this fact suggesting a possible unique mechanism for all of them.…”

“…[CoNd(Trp) 4 The oxide product resulted from the decomposition was analysed by X-ray diffraction; the diffractogram of this oxide residue showedthat the perovskitic phase has been obtain. Only reaction (1) is kinetically workable, the values of the non-isothermal kinetic parameters, reaction order n, preexponential factor A and activation energy E for this reaction being listed in Table 2.…”

“…Following our research on the thermal behaviour and non-isothermal decomposition kinetics of rare earth coordination compounds yielding mixed oxides [1][2][3][4][5], we present in this paper the results concerning the thermal stability of three coordination compounds: [CoNd(Trp) 4 .3H20 where Trp is the triptophan anion were used. The coordination compounds were synthesized and analysed according to methods described elsewhere [6].…”

Polynuclear coordination compounds as precursors for CuFe2O4

“…Polynuclear coordination compounds precursors with two or more metallic ions are capable of forming mixed oxides through their thermal decomposition. [6][7][8] In this paper, our recent studies concerning the synthesis of polynuclear coordination compounds as precursors for CuFe 2 O 4 are described.…”

Activated Carbon Composites for Air Separation

“…In order to mimic a ferromagnetic microporous adsorbent, the fibers were modified by depositing nanosized magnetite (Fe 3 O 4 ) onto activated carbon fibers, using a cold precipitation method. [20] In contrast with the ceramic method for synthesis of magnetite, which involves high temperature processes and results in a highly sintered product, the cold synthesis method (< 120ºC) preserves the nanosized colloidal particles of magnetite. Several runs were made to obtain different loadings of magnetite in the activated carbon fibers.…”