Xin Jia-Ying, Fan Hong-Chen, Ji Sheng-Fu, Wang Yan, Xia Chun-Gu
State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
Key Laboratory for Food Science & Engineering, Harbin University of Commerce, Harbin 150076, People's Republic of China.
IET Nanobiotechnol. 2017 Aug;11(5):512-516. doi: 10.1049/iet-nbt.2016.0168.
A green bioreductive approach with methanobactin was adopted to fabricate bimetallic Au-Pd/AlO catalysts for solvent-free oxidation of glucose to gluconic acid with HO at atmospheric pressure. The catalyst was characterised by diffuse reflectance UV-vis spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction techniques to understand synergistic interactions between Au and Pd. Effects of Au to Pd molar ratio on the catalytic activity of Au-Pd/AlO were investigated. The Au-Pd/AlO catalyst with Au/Pd molar ratio of 0.8:0.2 exhibited excellent catalytic performance. With the catalyst, the oxidation activities of glucose to gluconic acid 2856 mmol min g and selectivity 99.6% were attained at 323 K with HO. The results indicated the activity and selectivity was affected by the ratio of Au/Pd on the AlO. The formation of AuPd/AlO was favourable for the catalytic reaction.
采用一种含甲烷菌素的绿色生物还原方法制备双金属Au-Pd/AlO催化剂，用于在常压下以H₂O₂将葡萄糖无溶剂氧化为葡萄糖酸。通过漫反射紫外可见光谱、透射电子显微镜、X射线光电子能谱和X射线衍射技术对催化剂进行表征，以了解Au和Pd之间的协同相互作用。研究了Au与Pd摩尔比对Au-Pd/AlO催化活性的影响。Au/Pd摩尔比为0.8:0.2的Au-Pd/AlO催化剂表现出优异的催化性能。使用该催化剂，在323K下以H₂O₂将葡萄糖氧化为葡萄糖酸的活性达到2856 mmol min⁻¹ g⁻¹，选择性为99.6%。结果表明，活性和选择性受AlO上Au/Pd比例的影响。AuPd/AlO的形成有利于催化反应。
