作者:M. Wang、Z. G. Song、H. Jiang、H. Gong
DOI:10.1007/s10973-009-0119-z
日期:2009.12
The thermal decompositions of dehydrated or anhydrous bivalent transition metal (Mn, Fe, Co, Ni, Cu, Zn, Cd) and alkali rare metal (Mg, Ca, Sr, Ba) methanesulfonates were studied by TG/DTG, IR and XRD techniques in dynamic Air at 250–850 °C. The initial decomposition temperatures were calculated from TG curves for each compound, which show the onsets of mass loss of methanesulfonates were above 400 °C. For transition metal methanesulfonates, the pyrolysis products at 850 °C were metal oxides. For alkali rare metal methanesulfonates, the pyrolysis products at 850 °C of Sr and Ba methanesulfonates were sulphates, while those of Mg and Ca methanesulfonate were mixtures of sulphate and oxide.
在 250-850 ℃ 的动态空气中,采用 TG/DTG、IR 和 XRD 技术研究了脱水或无水的二价过渡金属(Mn、Fe、Co、Ni、Cu、Zn、Cd)和碱稀有金属(Mg、Ca、Sr、Ba)甲烷磺酸盐的热分解。根据 TG 曲线计算出了每种化合物的初始分解温度,结果表明甲烷磺酸盐的质量损失起始温度高于 400 ℃。过渡金属甲烷磺酸盐在 850 ℃ 时的热解产物是金属氧化物。至于碱稀有金属甲烷磺酸盐,Sr 和 Ba 甲烷磺酸盐在 850 ℃ 时的热解产物是硫酸盐,而 Mg 和 Ca 甲烷磺酸盐在 850 ℃ 时的热解产物是硫酸盐和氧化物的混合物。