Nano-crystalline powders and suspensions generated using a flow-through hydrothermal process, Part 2: Applications

摘要

Ultra-fine, nano-crystalline six-line ferrihydrite (5Fe(sub 2)O(sub 3)9H(sub 2)O) and cubic zirconia (ZrO(sub 2)) powders have been produced using the Rapid Thermal Decomposition of precursors in Solution (RTDS) technology. Nano-crystalline RTDS six-line ferrihydrite powder used as an in situ precursor for first-stage direct coal liquefaction catalysts increased the liquefied products from Blind Canyon Seam coal by 22% absolute over thermal background at 350C. Initial sintering studies performed on nano- crystalline RTDS ZrO(sub 2) powder have also been presented and compared to predictions made from theories derived for micro- crystalline powders.