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《Fuel》1986,65(1):146-147
The chemistry of tin added in various forms as catalyst in the liquefaction of Victorian brown coal was determined by 119Sn Mössbauer analysis. After 60 min hydrogenation at 380 °C and 6 MPa initial hydrogen pressure, tin was principally distributed between β-Sn, SnS and SnO2. No significant dependence of liquefaction yield on the initial tin compound was apparent. The results extend earlier work and support the previous conclusion that elemental tin is the important species for promoting hydroliquefaction in these systems. 相似文献
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