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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis and characterization of mesoporous PdPtCr alloy and its influence on the hydrogen kinetics in MgH_2
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Synthesis and characterization of mesoporous PdPtCr alloy and its influence on the hydrogen kinetics in MgH_2

机译：介孔PdPtCr合金的合成，表征及其对MgH_2中氢动力学的影响

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摘要

The compounds made of MgH_2 and (1 and 5 wt.%) Pd_(40)Pt_(30)Cr_(30) catalyst by mechanical milling were tested for their ability to absorb and desorb hydrogen. The mesoporous Pd_(40)Pt_(30)Cr_(30) was obtained by the reduction of chloride complexes and using a surfactant solution. The absorption kinetic tests showed that the MgH_2 +1 wt.% Pd_(40)Pt_(30)Cr_(30) sample attained 90% of hydrogen capacity around 10min, at 350 °C. The desorption tests showed that the MgH_2+5 wt.% Pd_(40)Pt_(30)Cr_(30) sample desorbed completely in about 5 min at the same temperature. The highest hydrogen capacity, 6.8 wt.% of H_2, was determined by absorp-tion/desorption P-C-Isotherm curves at 300 °C for MgH_2 +1 wt.% Pd_(40)Pt_(30)Cr_(30) sample. The MgH_2+5 wt.% Pd_(70)Pt_(30) was used in the hydrogenation tests to elucidate the fact that the presence of CrCl3 in the Pd_(40)Pt_(30)Cr_(30) alloy mixed to MgH_2, leads to an increase in the hydrogen total capacity of absorption.
机译：通过机械研磨测试了由MgH_2和（1和5 wt。％）Pd_（40）Pt_（30）Cr_（30）催化剂制成的化合物的吸收和解吸氢的能力。通过还原氯化物络合物并使用表面活性剂溶液获得中孔Pd_（40）Pt_（30）Cr_（30）。吸收动力学测试表明，MgH_2 +1 wt。％Pd_（40）Pt_（30）Cr_（30）样品在350°C时约10分钟达到了90％的氢容量。解吸测试表明，MgH_2 + 5 wt。％Pd_（40）Pt_（30）Cr_（30）样品在相同温度下约5分钟内完全解吸。通过MgH_2 +1 wt％Pd_（40）Pt_（30）Cr_（30）样品在300°C的吸收/解吸P-C-等温曲线确定了最高的氢容量H6.8的重量百分比。在氢化试验中使用了MgH_2 + 5 wt。％Pd_（70）Pt_（30）来阐明在与MgH_2混合的Pd_（40）Pt_（30）Cr_（30）合金中存在CrCl3的事实增加氢的总吸收能力。

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