| 梁长海.双金属NiCu/MgO催化剂上葡萄糖氢解制备高附加值C2-C4化学品[J].分子催化,2016,30(4):324-337 |
| 双金属NiCu/MgO催化剂上葡萄糖氢解制备高附加值C2-C4化学品 |
| Hydrogenolysis of Glucose to Value-added C2-C4 Compounds over Bimetallic NiCu/MgO Catalysts |
| 投稿时间：2016-03-17 修订日期：2016-05-20 |
| DOI： |
| 中文关键词: 葡萄糖氢解 CuNi/MgO C2-C4化学品 1,2-PD |
| 英文关键词:glucose hydrogenolysis CuNi/MgO C2-C4 1,2-PD |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 采用共沉淀法制备了不同Ni/Cu比的NiCu/MgO双金属催化剂，并通过N2物理吸附、X射线衍射（XRD）、X射线光电子能谱（XPS）和程序升温还原等方法对NiCu/MgO催化剂结构进行表征。表征结果表明，Cu和Ni之间存在协同相互作用，NiMgO2的存在抑制了镍物种的还原和Cu-Ni 合金的形成，催化剂的Ni/Cu比和焙烧温度对其表面金属组成有非常重要的影响。以葡萄糖氢解反应为探针反应，考察了 Ni/Cu比、焙烧温度、H2 压力、反应温度、反应时间等因素对NiCu/MgO催化性能的影响。研究表明相对于单金属催化剂，双金属催化剂对葡萄糖氢解生成 C2-C4和1,2-PD 具有较高的催化活性，这与铜镍之间的协同作用有关。 |
| 英文摘要: |
| A series of bimetallic NiCu/MgO catalysts with different Ni/Cu ratios were prepared by co-precipitation route. The structural properties of NiCu/MgO catalysts were determined by N2-physisorption, X-ray diffraction, temperature-programmed reduction and X-ray photoelectron spectroscopy. The results indicated that the synergetic effect of copper and nickel existed and the formation of NiMgO2 inhibited reduction of Ni species and formation of Cu-Ni alloy. The surface composition of the catalysts was significantly altered by adjusting Ni/Cu ratios and calcination temperatures. The hydrogenolysis of glucose was employed for evaluating the catalytic performance of the bimetallic NiCu/MgO catalysts. It was found that the bimetallic catalysts exhibited higher activity for the hydrogenolysis of glucose to C2-C4 products and 1,2-PD compared to the monometallic catalyst, due to the synergistic effect between Cu and Ni. |
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