| 镍(II)配合物官能化的MCM-41催化分子氧环氧化苯乙烯 |
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| 引用本文： | 杨刚,陈星,王小丽,邢卫红,徐南平.镍(II)配合物官能化的MCM-41催化分子氧环氧化苯乙烯[J].催化学报,2013,34(7):1326-1332. |
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| 作者姓名： | 杨刚 陈星 王小丽 邢卫红 徐南平 |
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| 作者单位： | 南京工业大学材料化学工程国家重点实验室, 江苏南京 210009 |
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| 基金项目： | supported by the National Natural Science Foundation of China(20576052)~~ |
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| 摘 要： | 制备了镍(II)席夫碱配合物官能化的MCM-41多相催化剂MCM-41-Ni.利用X射线粉末衍射、氮气物理吸附脱附、红外光谱、热重、电感耦合等离子体原子发射光谱、元素分析和透射电镜等方法对催化剂进行了表征.以氧气为氧化剂,MCM-41-Ni在催化环氧化苯乙烯的反应中表现出较高的催化活性;苯乙烯的转化率为95.2%,环氧苯乙烷的选择性为66.7%.系统地研究了反应温度、催化剂用量、溶剂以及反应时间对反应性能的影响.催化剂经过4次循环仍然表现出较好的稳定性和催化活性.
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| 关 键 词： | 镍席夫碱配合物 MCM-41分子筛 苯乙烯环氧化 分子氧 |
| 收稿时间： | 2013-01-23 |
Nickel(II) complex anchored on MCM-41 for the epoxidation of styrene by oxygen |
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| YANG Gang, CHEN Xing, WANG Xiaoli, XING Weihong, XU Nanping.Nickel(II) complex anchored on MCM-41 for the epoxidation of styrene by oxygen[J].Chinese Journal of Catalysis,2013,34(7):1326-1332. |
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| Authors: | YANG Gang CHEN Xing WANG Xiaoli XING Weihong XU Nanping |
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| Institution: | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China |
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| Abstract: | A heterogeneous catalyst, MCM-41-Ni, was synthesized by anchoring a nickel(II) Schiff base complex onto amino-modified MCM-41. The catalyst was characterized by small angle X-ray diffraction, nitrogen adsorption, infrared spectroscopy, thermal gravimetric analysis, inductively coupled plasma and C, H, N elemental analysis, and transmission electron microscopy. MCM-41-Ni showed excellent catalytic activity for the epoxidation of styrene with O2 as oxidant with high styrene conversion (95.2%) and epoxide selectivity (66.7%). The influence of reaction temperature, catalyst amount, solvent, and reaction time was studied. MCM-41-Ni showed good recyclability and can be reused four times. |
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| Keywords: | Nickel Schiff base complex MCM-41 molecular sieve Styrene epoxidation Molecular oxygen |
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