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铁(Ⅱ)-L配合物催化苯酚羟化反应机理的研究(英文)
Mechanism of Phenol Hydroxylation Catalyzed by Iron(Ⅱ) L
【摘要】 研究了铁(Ⅱ)-L(L=C2O42-、EDTA、CN-、C5H5-、1,10-phenanthroline和2,2′-dipyridine)对苯酚羟化反应的催化作用.结果表明,催化剂的苯酚羟化活性与它们的氧化还原电位有关,电位过高和过低都不利于苯酚羟化反应的进行.本文同时提出了苯酚羟化的反应机理,对实验结果进行了合理的解释
【Abstract】 Catalysis of iron(Ⅱ) L (L=C 2O 4 2- , EDTA, CN -, C 5H 5 -, 1,10 phenanthroline and 2,2′ dipyridine) was studied in homogeneous phenol hydroxylation. The results show that the activity of these catalysts is related to their redox potential, too low or too high redox potential is not favorable for its catalysis in phenol hydroxylation. With the help of UV Vis, ESR spectra and the catalysis of some catalysts in H 2O 2 decomposition, radical substitution mechanism of phenol hydroxylation with H 2O 2 as oxygen donor is proposed.
【关键词】 铁(Ⅱ)-L配合物;
苯酚羟化;
过氧化氢;
【Key words】 Iron(Ⅱ) L complexes; Phenol hydroxylation; Hydrogen peroxide;
【Key words】 Iron(Ⅱ) L complexes; Phenol hydroxylation; Hydrogen peroxide;
- 【文献出处】 分子催化 ,JOURNAL OF MOLECULAR CATALYSIS (CHINA) , 编辑部邮箱 ,1997年01期
- 【分类号】O621
- 【被引频次】6
- 【下载频次】103