A CuII‐based Metal–Organic Framework as an Efficient Photocatalyst for Direct Hydroxylation of Benzene to Phenol in Aqueous Solution,Asian Journal of Organic Chemistry

当前位置： X-MOL 学术 › Asian J. Org. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A CuII‐based Metal–Organic Framework as an Efficient Photocatalyst for Direct Hydroxylation of Benzene to Phenol in Aqueous Solution
Asian Journal of Organic Chemistry ( IF 2.8 ) Pub Date : 2017-11-15 , DOI: 10.1002/ajoc.201700501
Li Zhang ₁ , Shuhai Qiu ₂ , Guoqing Jiang ₃ , Guomin Jiang ₃ , Ruiren Tang ₁

Affiliation

A Cu^II‐based metal–organic framework (MOF; 1), constructed with imidazole carboxylate ligands (5‐(1 H‐imidazol‐1‐yl)isophthalic acid) and copper(II) ions was prepared and characterized in detail by XRD, Brunauer–Emmett–Teller (BET), thermogravimetric analysis (TGA), and IR methods. Its catalytic performance for the direct hydroxylation of benzene to phenol has been investigated. A benzene conversion of 29 % as well as a high phenol selectivity above 95 % has been obtained at 60 °C in water. The cycling tests showed no significant decrease after five runs, indicating good stability and reuse properties of the Cu^II‐based MOF (1). The effect of adding the hydroxyl radical scavenger, thiourea, and the ESR spectra of the catalytic system have confirmed the existence of hydroxyl radicals, which indicates the catalytic mechanism follows a Fenton‐type route. This economically and environmentally friendly approach with Cu^II‐based MOFs is expected to find applications in the hydroxylation of aromatics.

中文翻译：

一种基于CuII的金属有机骨架，可作为有效的光催化剂将水溶液中的苯直接羟基化为苯酚

用咪唑羧酸盐配体（5-（1 H-咪唑-1-基）间苯二甲酸）和铜（II）离子构建了基于Cu ^II的金属-有机骨架（MOF; 1），并通过XRD对其进行了详细表征，Brunauer–Emmett–Teller（BET），热重分析（TGA）和IR方法。研究了其对苯直接羟基化为苯酚的催化性能。在60°C的水中，苯的转化率为29％，苯酚的选择性高于95％。循环测试表明，经过五次运行后没有明显下降，表明基于Cu ^II的MOF具有良好的稳定性和可重复使用性（1）。添加羟基自由基清除剂，硫脲和催化体系的ESR谱图的结果证实了羟基自由基的存在，这表明催化机理遵循Fenton型途径。这种基于Cu ^II的MOF的经济和环境友好的方法有望在芳族化合物的羟基化中找到应用。

更新日期：2017-11-15

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11