| 纳米Pd/C催化剂的制备及其催化氧化乙二醛生成乙醛酸的研究 |
| |
| 引用本文： | 苏琳琳,董守安,杨辅龙,余明坤,潘再富.纳米Pd/C催化剂的制备及其催化氧化乙二醛生成乙醛酸的研究[J].贵金属,2011,32(2). |
| |
| 作者姓名： | 苏琳琳 董守安 杨辅龙 余明坤 潘再富 |
| |
| 作者单位： | 昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,昆明,650106 |
| |
| 基金项目： | 国家科技部院所专项(NCSTE-2006-JKZX-062); 稀贵金属综合利用新技术国家重点实验室资助 |
| |
| 摘 要： | 利用化学还原法分别以PdCl2和Pd(OAc)2为前体制备了胶体Pd纳米粒子,然后采用胶体负载法获得2种Pd/C催化剂并应用于催化乙二醛氧化生成乙醛酸的反应。研究了催化反应条件如温度、乙二醛初始浓度以及在催化剂制备中Pd负载量、使用的前体对催化反应的影响,从而在最佳催化条件下得到乙醛酸产率为31.07%,选择性为67.06%的反应结果;利用XPS技术对Pd/C催化剂使用前后Pd的表面化学状态进行了表征,简要探讨了Pd/C催化剂的选择性和催化剂失活机理。
|
| 关 键 词： | 物理化学 复合催化材料 Pd/C催化剂 制备 乙二醛氧化 乙醛酸 |
Preparation of Nano-Pd/C Catalysts and Their Catalytic Oxidation for Glyoxal to Glyoxalic Acid |
| |
| SU Linlin,DONG Shouan,YANG Fulong,YU Mingkun,PAN Zaifu.Preparation of Nano-Pd/C Catalysts and Their Catalytic Oxidation for Glyoxal to Glyoxalic Acid[J].Precious Metals,2011,32(2). |
| |
| Authors: | SU Linlin DONG Shouan YANG Fulong YU Mingkun PAN Zaifu |
| |
| Affiliation: | SU Linlin,DONG Shouan,YANG Fulong,YU Mingkun,PAN Zaifu(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals,Kunming 650106,China) |
| |
| Abstract: | Two kinds of Pd/C catalysts were prepared by the colloidal method in which colloidal Pd nanoparticies were prepared by chemical reduction using PdCl2 and Pd(OAc)2 as precursors,and then were supported on activated carbon,respectively.The catalysts obtained were used for selective catalytic oxidation of glyoxal to glyoxalic acid.The effect of reaction conditions such as reaction temperature,initial concentration of glyoxal as well as Pd loading quantity and using precursor in the process of preparing catalys... |
| |
| Keywords: | physical chemistry composite catalytic material Pd/C catalyst preparation glyoxal oxidation glyoxalic acid |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
