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首页> 外文期刊>RSC Advances >Efficient dehydrogenation of a formic acid–ammonium formate mixture over Au3Pd1 catalyst
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Efficient dehydrogenation of a formic acid–ammonium formate mixture over Au3Pd1 catalyst

机译：高效脱氢甲酸 - 氨基甲酸酯对Au3PD1催化剂的混合物

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摘要

A series of AuPd/C catalysts were prepared and tested for the first time for active and stable dehydrogenation of a formic acid–ammonium formate (FA–AF) mixture. The catalysts with different Au-to-Pd molar ratios were prepared using a facile simultaneous reduction method and characterized using transmission electron microscopy (TEM), high-resolution TEM, energy dispersive X-ray spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. It was found that the catalytic activity and stability of the Au _(3) Pd _(1) /C catalyst was the best. The initial turnover frequency for the dehydrogenation of the FA–AF mixture over the Au _(3) Pd _(1) /C catalyst can reach 407.5 h ~(?1) at 365 K. The reaction order with respect to FA and AF is 0.25 and 0.55, respectively. The apparent activation energy of dehydrogenation is 23.3 ± 1.3 kJ mol ~(?1) . The catalytic activity of the Au _(3) Pd _(1) /C catalyst remains ca. 88.0% after 4 runs, which is much better than the single Pd/C catalyst. The mechanism for the dehydrogenation is also discussed.
机译：制备一系列AUPD / C催化剂并首次测试并测试甲酸 - 氨基甲酸（FA-AF）混合物的活性和稳定的脱氢。使用容易同时还原方法制备具有不同AU-TO-PD摩尔比的催化剂，并使用透射电子显微镜（TEM），高分辨率TEM，能量分散X射线光谱，X射线衍射和X射线表征光电子光谱。发现Au _（3）Pd _（1）/ c催化剂的催化活性和稳定性是最好的。在Au _（3）Pd _（1）/ c催化剂上，FA-AF混合物脱氢的初始流畅频率可以在365 k达到407.5h〜（α1）。关于FA和AF的反应令分别为0.25和0.55。脱氢的表观活化能量为23.3±1.3 kJ摩尔〜（？1）。 Au _（3）Pd _（1）/ c催化剂的催化活性仍然是Ca。 4次运行后88.0％，比单个Pd / C催化剂好得多。还讨论了脱氢机制。

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