Water-assisted sonochemically-induced demethylenation of benzyl alcohol to phenol over a structurally stable cupric oxide catalyst

Teseer Bahry; Shang Jiang; Umesh Jonnalagadda

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Water-assisted sonochemically-induced demethylenation of benzyl alcohol to phenol over a structurally stable cupric oxide catalyst

机译：Water-assisted sonochemically-induced demethylenation of benzyl alcohol to phenol over a structurally stable cupric oxide catalyst

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Novel catalytic chemistry of demethylenation of benzyl alcohol to phenol is presented here using the synergy between an earth-abundant transition metal oxide (CuO) catalyst and high frequency ultrasound (HFUS). This chemistry is achieved in water and at room temperature. Using a combination of catalyst characterization, chemical and acoustic analysis, isotope labelling and density functional theory computations, we reveal the molecular reaction mechanism, involving benzaldehyde as an intermediate. Water is not just a benign solvation medium, but it directly participates in the chemistry by getting dissociated due to sonolysis. The adsorption of the OH from water on the catalyst surface inhibits its recombination. The surface adsorbed OH from water also activates the C-H bond in benzyl alcohol to form benzaldehyde and later incorporates itself into the phenyl ring to form phenol.

机译：小说的demethylenation催化化学酚苄醇是这里提出一个地球上充足的过渡之间的协同作用金属氧化物(错)催化剂和高频率超声波(hfu)。水和在室温下。结合催化剂表征,化学和声学分析、同位素标签密度泛函理论计算,我们揭示了分子反应机理,涉及苯甲醛作为中间。不仅仅是一个良性溶剂化作用的媒介,但是它吗直接参与化学反应由于超声波分解分离。从催化剂表面的水哦抑制其重组。哦也从水中激活碳氢键苯甲醇形成苯甲醛和以后把自己变成苯基环的形成苯酚。

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《Catalysis science & technology》 |2023年第10期|2982-2993|共12页
作者
Teseer Bahry; Shang Jiang; Umesh Jonnalagadda;
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作者单位

Institut de Chimie des Milieux et Materiaux de Poitiers, University of Poitiers, CNRS 1 rue Marcel Dore, 86073 Poitiers, France;

Department of Chemical and Materials Engineering, University of Alberta, 9211-116 St NW, Edmonton, Alberta T6G1H9, Canada;

School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Water-assisted sonochemically-induced demethylenation of benzyl alcohol to phenol over a structurally stable cupric oxide catalyst

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