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Phenol

About: Phenol is a research topic. Over the lifetime, 10722 publications have been published within this topic receiving 182898 citations. The topic is also known as: carbolic acid & Karbolsaeure.


Papers
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Journal ArticleDOI
Huizhen Liu1, Tao Jiang1, Buxing Han1, Shuguang Liang1, Yinxi Zhou1 
27 Nov 2009-Science
TL;DR: It is reported that a previously unappreciated combination of two common commercial catalysts―nanoparticulate palladium (supported on carbon, alumina, or NaY zeolite) and a Lewis acid such as AlCl3―synergistically promotes this reaction.
Abstract: Cyclohexanone is an industrially important intermediate in the synthesis of materials such as nylon, but preparing it efficiently through direct hydrogenation of phenol is hindered by over-reduction to cyclohexanol Here we report that a previously unappreciated combination of two common commercial catalysts-nanoparticulate palladium (supported on carbon, alumina, or NaY zeolite) and a Lewis acid such as AlCl3-synergistically promotes this reaction Conversion exceeding 999% was achieved with >999% selectivity within 7 hours at 10-megapascal hydrogen pressure and 50 degrees C The reaction was accelerated at higher temperature or in a compressed CO(2) solvent medium Preliminary kinetic and spectroscopic studies suggest that the Lewis acid sequentially enhances the hydrogenation of phenol to cyclohexanone and then inhibits further hydrogenation of the ketone

542 citations

Journal ArticleDOI
TL;DR: It was evident that electron-donating substitution on the aromatic rings strengthened the pi-pi interaction between the aromatics and CNTs and thus the adsorption affinity, which will advance the understanding of the sorption behavior of C NTs in the environmental systems.
Abstract: With increasing production and application of carbon nanotubes (CNTs), it becomes necessary to understand the interaction between CNTs and aromatic compounds, an important group of organic contaminants and structural components of large organic molecules in biological systems. However, so far few experimental studies have been conducted to systematically investigate the sorption mechanism of polar aromatics to CNTs. Therefore, cyclohexanol, phenol, catechol, pyrogallol, 2-phenylphenol, 1-naphthol, and naphthalene were selected to investigate the role of aromatic structure and -OH substitution in the polar aromatics-CNTs system. Sorption affinity of these compounds by CNTs increased with increasing number of aromatic rings, with an order of cyclohexanol < phenol < 2-phenylphenol < 1-naphthol, and was greatly enhanced by -OH substitution, with an order of phenol (1 -OH) < catechol (2 -OH) < pyrogallol(3-OH). Four possible solute-sorbent interactions, i.e., hydrophobic effect, electrostatic interaction, hydrogen bonding, and pi-pi bonds, were discussed to addressthe underlying mechanism of the enhanced sorption affinity by -OH substitution. It was evident that electron-donating substitution on the aromatic rings strengthened the pi-pi interaction between the aromatics and CNTs and thus the adsorption affinity. These results will advance the understanding of the sorption behavior of CNTs in the environmental systems.

540 citations

Journal ArticleDOI
TL;DR: The results proved that the prepared activated carbon was an effective adsorbent for removal of phenol from aqueous solution.

535 citations

Journal ArticleDOI
TL;DR: In this article, the effect of initial oxidant concentration on photo-assisted persulfate (PS), hydrogen peroxide (H 2 O 2 ) and peroxymonosulfates (PMS) oxidation processes were evaluated and compared for aqueous phenol degradation.

514 citations

Journal ArticleDOI
TL;DR: It is argued that anodic property not only affects the reaction kinetics of various steps of EC organic oxidation, but also alters the pathway of phenol electrolysis.

510 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023820
20221,636
2021213
2020209
2019269
2018255