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The present review article focuses on novel methods of converting inexpensive raw materials to active catalysts for low-temperature coal gasification, which can produce clean fuels and valuable feedstock with high thermal efficiency. Precipitation methods using NH 3 , urea, and Ca(OH) 2 make it possible to prepare active, Cl-free iron catalysts on brown coals from an aqueous solution...
Formation of HCN, NH 3 , and N 2 during fixed-bed pyrolysis at 10K min -1 has been studied using coal samples after partial demineralization followed by addition of metal hydroxides from aqueous systems. Without additives, NH 3 is the predominant product at ≤ 700°C, showing the two peaks in the formation rate profile, whereas N 2 is the only product at...
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