The catalytic effect of iron(III) oxide, α-Fe2O3, upon the thermal decomposition of antimony(III) oxychloride, SbOCl.

Phase Relations and Heat-Induced Chemical Processes in Sludges of Hot-Dip Galvanization

“…Release of the structural water started at about 210 °C with the formation of protohematite or hydrohematite intermediates. Hematite formation set in at about 400 °C, ,, and intensive dewatering could be observed at 450 °C. A relatively small amount (1−2%) of water was released upon further heating, and residual −OH groups could be detected by IR spectroscopy in all of the heat-treated samples, even if the sample was sintered at 1000 °C for 5 h (Figure b−f, around 1620 and 3350 cm -1 ).…”

“…Heat-Induced Transformations and Phase Relations in Hot-Sintered Sludges. The constituents of the sludge decompose upon heating, ,− and various reactions between individual compounds and/or their decomposition products take place. For example, ZnCl 2 ·4Zn(OH) 2 ·5H 2 O starts losing water at about 100 °C; then at about 220 °C, structural water is released and amorphous ZnO (3 mol) and Zn(OH)Cl (2 mol) form .…”

Development of the Sb4O5Cl2@NbSe2 Composite: The Impact of 2H-NbSe2 Nanoparticles on Sb4O5Cl2 and Their Application for the Removal of Cr(VI)/Fe(III) and Methyl Orange from Wastewater

“…Antimony oxychlorides, e.g., SbOCl, Sb 3 O 4 Cl, Sb 4 O 5 Cl 2 , − and Sb 8 O 11 Cl 2 , have gained considerable interest as semiconductor materials due to their potential applications as energy-storage materials, catalysts, and flame resistance substances. Among different antimony oxychloride compounds, Sb 4 O 5 Cl 2 has been extensively studied because of its layered crystal structure, photochemical properties, and photocatalytic performance. , However, the photocatalytic performance of Sb 4 O 5 Cl 2 is mainly limited by its large band gap (3.44–3.46 eV), which leads to a poor light absorption capacity in the visible light region.…”