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[1]王小丽,陈星,杨刚,等.枝状钴配合物的合成及其对苯乙烯环氧化的催化性能[J].南京工业大学学报(自然科学版),2014,36(01):23-27.[doi:10.3969/j.issn.1671-7627.2014.01.005]
 WANG Xiaoli,CHEN Xing,YANG Gang,et al.Synthesis of dendritic cobalt(II)complex and catalytic performance for epoxidation of styrene[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(01):23-27.[doi:10.3969/j.issn.1671-7627.2014.01.005]
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枝状钴配合物的合成及其对苯乙烯环氧化的催化性能()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年01期
页码:
23-27
栏目:
出版日期:
2014-01-20

文章信息/Info

Title:
Synthesis of dendritic cobalt(II)complex and catalytic performance for epoxidation of styrene
文章编号:
1671-7627(2014)01-0023-05
作者:
王小丽陈星杨刚邢卫红徐南平
南京工业大学 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
WANG XiaoliCHEN XingYANG GangXING WeihongXU Nanping
State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China
关键词:
枝状分子 钴(II)配合物 环氧化 分子氧 苯乙烯
Keywords:
dendrimer cobalt(Ⅱ)complex epoxidation molecular oxygen styrene
分类号:
O643
DOI:
10.3969/j.issn.1671-7627.2014.01.005
文献标志码:
A
摘要:
将合成的配体4-(2-吡啶甲醛亚氨基)苯酚与醋酸钴反应得到钴(Ⅱ)配合物(CoL),再将CoL负载到碳硅烷枝状分子上,制备成枝状钴(Ⅱ)配合物催化剂(CS-CoL),并通过傅里叶红外光谱(FT-IR)、元素分析、氢谱(1H NMR)等对相关化合物进行表征。以分子氧为氧源,将催化剂用于催化苯乙烯的环氧化反应,同时考察催化剂的种类、溶剂、反应温度和反应时间对苯乙烯环氧化反应性能的影响。结果表明:负载后的枝状催化剂CS-CoL比单体催化剂CoL的催化活性高,苯乙烯的转化率为99.9%,环氧苯乙烷的选择性达59.5%,同时也说明枝状载体具有正向的“枝状分子效应”。
Abstract:
The synthesized ligand 4-[(2-pyridinylmethylene)amino] phenol reacted with cobalt(Ⅱ)acetate to give the cobalt(Ⅱ)complex(CoL),then the CoL was further anchored on carbosilane dendrimer to obtain the dendritic cobalt(II)complex catalyst(CS-CoL).The related compounds were characterized by Fourier transform infrared spectroscopy(FT-IR),elemental analysis and hydrogen nuclear magnetic resonance spectroscopy(1H NMR).The catalyst was evaluated for the epoxidation of styrene with O2 as oxidant. And the effects of reaction conditions of catalyst,solvent,reaction temperature,and reaction time,were further investigated.For epoxidation of styene with O2,the immobilized cobalt(Ⅱ)complex was more effective than monomer cobalt(Ⅱ)complex with styrene conversion of 99.9% and epoxide selectivity of 59.5%.Dendritic molecule carriers had a positive effect of dendritic molecules on epoxidation of styrene.

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相似文献/References:

[1]杨刚,高升,谷秋菊,等.柱层析法纯化烯丙基硅烷[J].南京工业大学学报(自然科学版),2010,32(01):19.
 YANG Gang,GAO Sheng,GU Qiu ju,et al.Purification of carbosilane dendrimers by column chromatography[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2010,32(01):19.

备注/Memo

备注/Memo:
收稿日期:2013-02-28
基金项目:国家自然科学基金(20576052)
作者简介:王小丽(1987—),女,重庆人,硕士,主要研究方向为有机合成及催化应用; 杨刚(联系人),教授,E-mail: yanggang@njut.edu.cn..
更新日期/Last Update: 2014-01-20