有机硫对维多利亚褐煤液化的催化作用之穆斯堡尔研究

我们以Morwell和Coolungoolun两种维多利亚褐煤进行实验,对铁和锡在煤的液化中的催化作用进行了比较,发现锡对低硫的Morwell煤较为有效,而铁则更适合于高硫的Coolungoolun煤。对液化余渣的穆斯堡尔分析的结果,使我们可以用低硫煤中元素态锡的形成以及在高硫煤中磁黄铁矿（Fe_(0.92)S）的形成来对观察到的现象作出解释。硫的损耗数据表明,磁黄铁矿的存在使得煤中的硫转化为气相的量增加了。

Mossbauer Study of the Effect of Organic Sulphur on the Catalysis of Victorian Brown Coal Liquefaction

The promotion of coal liquefaction by iron and tin has been compared in two Victorian brown coals, Morwell and Coolungoolun. Tin was more effective in the low-sulphur Mouwell coal, whereas iron was better suited to the high-sulphur Coolungoolun coal. 119Sn and 57Fe Mossbauer analyses of the liquefaction residues have led to explanation of these observations in terms of the formation of elemental tin in low-sulphur coal and pyrrhotlte, Fe0.92S, in high-sulphur coal. Sulphur loss data indicated that pyrrhotlte enhances the transfer of sulphur from the coal to the gas phase.