Catalytic activities of high-silica zeolites of ZSM type and also bi-zeolite catalysts HY-ZSM and LaY-ZSM in the hydrotreatment of a wide fraction of liquefaction products from brown coal (328-698 K boiling range) were determined. All the zeolites were modified by Mo and also Pd, Co and Ni loading. It was shown that ZSM use provides an opportunity to hydrogenate nitrogen compounds selectively in the presence of sulfur compounds. Removal of phenols does not restrict the general hydrotreatment process. A considerable increase in activity was found on changing from ZSM to the bi-zeolite systems HY-ZSM and LaY-ZSM.