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首页> 外文期刊>International journal of hydrogen energy >Highly Porous Palladium Bulk: Preparation And Properties As Active Metal Material For Displacement Chromatographic Process
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Highly Porous Palladium Bulk: Preparation And Properties As Active Metal Material For Displacement Chromatographic Process

机译：高度多孔的钯块体：置换色谱法用活性金属材料的制备及性能

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Highly porous palladium bulks were prepared by spark plasma sintering from Pd powder, with tungsten carbide as the mold material. It was found that the surface purity increased but the porosity and BET surface area decreased with the increase in sintering temperature. Due to the formation of a porous microstructure with well-developed necks and higher purity of Pd on the surface, the bulk sintered at 700 ℃ for 5 min was applied to the displacement chromatographic processes (DCP) between saturated deuteride of the bulk and input hydrogen gas with various constant flow rates at 20 ℃. The experimental results showed that the exchange rates in the DCPs are very high. In addition, high initial deuterium abundances can be obtained when hydrogen gas with a constant flow rate ranged from 2.00 to 9.00 cm/s is adopted. The initial deuterium abundances of the DCP outflow dropped significantly when the flow rate rose up to 14.50 cm/s.
机译：用碳化钨作模具材料，通过火花等离子体烧结由Pd粉末制备高度多孔的钯块。发现随着烧结温度的升高，表面纯度增加，但是孔隙率和BET表面积降低。由于形成了具有良好颈长的多孔微结构和表面上较高的Pd纯度，将在700℃下烧结5分钟的块状物用于块状物的饱和氘代氢与输入氢之间的置换色谱法（DCP）气体在20℃具有各种恒定流量。实验结果表明，DCP中的汇率非常高。另外，当采用恒定流速为2.00至9.00cm / s的氢气时，可以获得高的初始氘丰度。当流速上升到14.50 cm / s时，DCP流出的初始氘丰度显着下降。

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