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Preparation of Ru Nano-particles Dispersed on a Highly-porous Material

机译:ru纳米粒子分散在高度多孔材料中的制备

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Metallic ruthenium nano-particles supported on carbon were prepared from Ru_3(CO)_(12) and highly-porous activated carbon by adsorption of the complex under boiling conditions in an acetone or cyclohexane solution, followed by H_2 reduction at 200°C. Occupation of micropores with the precursor all through the carbon surface would diminish the BET surface area and the pore volume, whereas partial restoration of them by heating the material in H_2 flow would be caused by complex decomposition and coagulative growth of Ru nano-particles (3.01 nm in average from TEM observation), which were surely lager in size than the pore diameter (2.15 nm determined by adsorption-isotherm measurements). Ru nano-particles were well dispersed on carbon.
机译:通过在丙酮或环己烷溶液中的沸腾条件下吸附络合物,通过在丙酮或环己烷溶液中的沸腾条件下吸附碳,制备金属钌纳米颗粒,然后通过在丙酮或环己烷溶液中的沸腾条件下吸附,然后在200℃下减少H_2。通过碳表面占据前体的微孔将减少BET表面积和孔体积,而通过在H_2流中加热材料的部分恢复将是由Ru纳米颗粒的复杂分解和凝固生长引起的(3.01 NM平均来自TEM观察),其尺寸肯定地比孔径相比(通过吸附 - 等温测量确定2.15nm)。 Ru纳米颗粒在碳上很好地分散。

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