Photocatalytic hydroxylation of phenol with Fe–Al-silicate photocatalyst: A clean and highly selective synthesis of dihydroxybenzenes

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• 作者：Huixian Shi^a ; Tianyong Zhang^a ; ^{tyzhang@tju.edu.cn"" rel=""nofollow} ; Bin Li^a ; Xiao Wang^a ; Meng He^a ; Mingyan Qiu^b
• 关键词：Photocatalyst ; Hydroxylation ; Silicate ; Phenol ; Catechol ; Hydroquinone
• 刊名：Catalysis Communications
• 出版年：2011
• 出版时间：10 June 2011
• 年：2011
• 卷：12
• 期：11
• 页码：1022-1026
• 全文大小：423 K

文摘

Photocatalytic hydroxylation of phenol to catechol and hydroquinone in liquid phase over a novel heterogeneous photocatalyst Fe–Al-silicate was investigated with the assistance of UV irradiation at 365 nm at room temperature. The catalyst was characterized by BET, BJH, FT-IR, UV–vis DRS and XRD. The effects of various parameters (types and amount of co-solvent, amount of catalyst, reaction time and amount of H₂O₂) on photocatalytic hydroxylation of phenol were studied to explore the better reaction conditions. In this study, phenol conversion could reach high up to 64.9 % , with a total selectivity of 95 % and the yield of 39.3 % , 22.3 % for catechol and hydroquinone, respectively.