The reduction of nitroaromatics to anilines by hydrazine in refluxing isopropanol is catalyzed by: three anthracites, anthracite culm, Beulah Zap lignite. and Illinois No. 6 coal. The anthracites and the culm are very effective catalysts while the coals are less effective. The decomposition of hydrazine is also catalyzed by the anthracites and anthracite culm. (C) 2004 Elsevier Ltd. All rights reserved.