Mass and heat transfer of large capacity Mg-3Ni-2MnO2 reaction bed during absorption
来源期刊：中国有色金属学报(英文版)2005年第z2期
论文作者：张文丛 崔令江 王尔德
文章页码：209 - 212
Key words：Mg-3Ni-2MnO2； Mg-based hydrogen storage material； ball milling； heat transfer； mass transfer
Abstract: Mg-3Ni-2MnO2 nanocomposite is fabricated by mechanical-milling under hydrogen atmosphere with the pressure of 0.5MPa, and heat and mass transfer of reaction bed was measured through the self-made apparatus. The results show that compared with the intrinsic absorption of Mg-3Ni-2MnO2 hydrogen storage material, the accumulated absorption kinetics of the reaction bed behaves so differently. At 150-300℃ during absorption process, the higher the temperature is, the better the intrinsic kinetics behaves. But during the same temperature range, the lower the initial temperature of the reaction bed is, the better the accumulated absorption kinetics is. During the absorption process, the temperature of reaction bed wall is lower than that of center, and the initial temperature has no influence on the highest temperature in the center of the reaction bed . When the reaction is finished, the reaction bed temperature turns to be homogeneous gradually.
