Characteristics of thermal decomposition products of rare earth, alkali earth metal and transition metal p-toluenesulfonates

摘要

A series of alkali earth (Ca, Ba), lanthanide ( La, Ce, Pr, Nd,) and transition metal (Fe, Mn, Co, Ni, Cu, Zn, Cd) p-toluenesulfonates were synthesized. Thermal analysis, infrared spectrophotometry, and XRD powder diffraction patterns were employed to characterize the final thermal decomposition products. By heating in dynamic air atmosphere at 30 - 850 degrees C, it has been found that the alkali earth p-toluenesulfonates thermal decompose ending with sulphates CaSO4 and BaSO4, while the lanthanide p-toluenesulfonates with oxosulphates ( LaO)(2)SO4, ( PrO)(2)SO4, ( NdO) 2SO4 and CeO2. Only the transition metal p-toluenesulfonates, decompose ending with appropriate metal oxides in all cases.