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The diversities of hydrogen sorption properties of Mg2FeH6-based complexes with and without TiO2 were investigated. Mg2FeH6-based complexes with and without TiO2 were synthesized respectively by reactive mechanical alloying, and hydrogen sorption properties of the complexes were examined
by Sieverts-type apparatus. The results show that the sample without TiO2 releases 4.43 % (mass fraction) hydrogen in 1.5 ks at 653 K under 0.1 MPa H2 pressure and absorbs 90% of the total 4.43 % (mass fraction) hydrogen absorbed in 85 s at 623 K under 4.0 MPa H2 pressure. But for the sample with TiO2 addition under the same condition, it only needs 400 s to release all of the stored hydrogen and 60 s to absorb 90% of the
total hydrogen absorbed. The activation energies for desorption process of the samples with and without TiO2 are determined to be 71.2 and 80.3 kJ/(mol·K), respectively. The improvement in hydrogen sorption rate and and reduction
in activation energy can be attributed to the addition of TiO2. 相似文献
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根据堪萨斯州农场报报道,美国先正达作物保护公司用于高粱田的除草剂Lumax和Lexar获得了联邦登记。 相似文献
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在世界上很多地方,基底岩石都是重要的油气储层。这类储层包括裂缝性或风化花岗岩、石英岩或变质岩。在南美,委内瑞拉和巴西都有基底储层。在北非,摩洛哥、利比亚、阿尔及利亚和埃及都有基岩储层的油气生产。西西伯利亚盆地和中国也都有重要的基底储层。在美国,很多地区都有与基岩有关的油气产量,包括加利福尼亚州(威灵顿和爱迪生油田)、堪萨斯州(埃尔多拉多和奥尔特油田)和得克萨斯州(阿卜科油田)。在东南亚,基底储层是越南的重要油气产量来源。在印尼,到目前为止基底储层的油气产量仍很少,但最近在苏门答腊南部前第三系裂缝性花岗岩中大型天然气的发现,引起人们对印尼基底储层勘探的重视。 相似文献