Catalytic effects of metal oxides on the thermal decomposition of sodium chlorate

Decarboxylation of Beypazari Lignite by the Catalytic Effect of Cr3+and Fe3+Ions

“…3d 5 configuration denotes to half-filled orbitals and these present greater stability. Metal ions with completely filled d-orbitals have very little catalytic activity (Zang et al, 1993), and therefore Fe 3+ ions with half-filled d-orbitals are less active than Cr 3+ ions. Conclusion 150 • C was the found to be the optimum temperature to run the decarboxylation experiments, and 2% Cr 3+ or Fe 3+ metal loadings for the raw coal samples and 1% Cr 3+ or Fe 3+ metal loadings for the demineralized coal samples were found to be the optimum values to obtain the highest calorific value coal after decarboxylation reactions.…”

Interaction of Iron Oxide with Barium Peroxide and Hydroxide during the Decomposition of Sodium Chlorate

“…As previously reported, the catalytic activities of the metal oxides are attributed to the metal cations (Zhang et al, 1993a). A metal cation can attract an unshared electron pair from an oxygen atom in the chlorate group to form a coordination bond.…”

“…It has been demonstrated previously that metal ions with partially filled d orbitals have a higher catalytic activity when the d orbitals are not exactly half-filled (Zhang et al, 1993a). Fe 4+ has only four 3d electrons, and its 3d orbitals are less than half-filled.…”

Catalytic Effects of Metals on Thermal Decomposition of Sodium Chlorate for Emergency Oxygen Generators

“…A distinct plateau is observed at temperatures from 320 to 350°C , the result of a sequence of steps involved in sodium chlorate decomposition. [1][2][3][4][5] Catalytic activity of Ni starts at higher temperatures for Co, while the decomposition is complete at the same temperature (400°C) with no plateau observed. The weight curves at 400-750°C indicate that oxidation of Co and Ni occurs in parallel with sodium chlorate decomposition.…”