标题：Efficient dehydrogenation of a formic acid-ammonium formate mixture over Au3Pd1 catalyst
作者：Guo, Xiao-Tong; Zhang, Juan; Chi, Jian-Chao; Li, Zhi-Hui; Liu, Yu-Chen; Liu, Xin-Ru; Zhang, Shu-Yong
作者机构：[Guo, Xiao-Tong; Zhang, Juan; Chi, Jian-Chao; Li, Zhi-Hui; Liu, Yu-Chen; Liu, Xin-Ru; Zhang, Shu-Yong] Shandong Univ, Sch Chem & Chem Engn, Jinan 2501 更多
通讯作者：Zhang, ShuYong;Zhang, SY
通讯作者地址：[Zhang, SY]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China.
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 Auto- 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, Xray diffraction, and X-ray photoelectron spectroscopy. It was found that the catalytic activity and stability of the Au3Pd1/C catalyst was the best. The initial turnover frequency for the dehydrogenation of the FAAF mixture over the Au3Pd1/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 X 1.3 kJ mol(-1). The catalytic activity of the Au3Pd1/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.