Photocatalytic hydroxylation of benzene to phenol over organosilane-functionalized FeVO4 nanorods

2021 ◽  
Author(s):  
Danlei Wei ◽  
Lianqi Huang ◽  
Hanying Liang ◽  
Junhua Zou ◽  
Wenwen Chen ◽  
...  
Keyword(s):  
Synthetic Approach ◽  
Hydroxylation Of Benzene ◽  
Phenol Synthesis ◽  
Benzene Hydroxylation ◽  
Hydroxylation Reaction

Photocatalytic benzene hydroxylation reaction using clean oxidant such as H2O2 is a green synthetic approach for phenol synthesis. Here, our study shows that the silylated iron vanadate (FeVO4) nanorods can...

scholarly journals On the Ability of Nickel Complexes Derived from Tripodal Aminopyridine Ligands to Catalyze Arene Hydroxylations

2020 ◽  
Vol 74 (6) ◽  
pp. 489-494
Author(s):  
Eduard Masferrer-Rius ◽  
Raoul M. Hopman ◽  
Jishai van der Kleij ◽  
Martin Lutz ◽  
Robertus J. M. Klein Gebbink
Keyword(s):  
Nickel Complex ◽  
Nickel Complexes ◽  
Chemical Research ◽  
Ligand Structure ◽  
Hydroxylation Of Benzene ◽  
Fluorinated Alcohols ◽  
Hydroxylation Reaction ◽  
Selective Hydroxylation ◽  
Direct Hydroxylation

The development of catalysts for the selective hydroxylation of aromatic C–H bonds is an essential challenge in current chemical research. The accomplishment of this goal requires the discovery of powerful metal-based oxidizing species capable of hydroxylating inert aromatic bonds in a selective manner, avoiding the generation of non-selective oxygen-centered radicals. Herein we show an investigation on the ability of nickel(ii) complexes supported by tripodal tetradentate aminopyridine ligands to catalyze the direct hydroxylation of benzene to phenol with H2O2 as oxidant. We have found that modifications on the ligand structure of the nickel complex do not translate into different reactivity, which differs from previous findings for nickel-based arene hydroxylations. Besides, several nickel(ii) salts have been found to be effective in the oxidation of aromatic C–H bonds. The use of fluorinated alcohols as solvent has been found to result in an increase in phenol yield; however, showing no more than two turn-overs per nickel. These findings raise questions on the nature of the oxidizing species responsible for the arene hydroxylation reaction.

Direct Catalytic Benzene Hydroxylation under Mild Reaction Condition by Using a Monocationic μ-Nitrido-Bridged Iron Phthalocyanine Dimer with 16 Peripheral Methyl Groups

2022 ◽  
Author(s):  
Yasuyuki Yamada ◽  
Chee-Ming Teoh ◽  
Yuka Toyoda ◽  
Kentaro Tanaka
Keyword(s):  
Acetonitrile Solution ◽  
Methyl Groups ◽  
Iron Phthalocyanine ◽  
Reaction Conditions ◽  
Reaction Condition ◽  
Hydroxylation Of Benzene ◽  
Benzene Hydroxylation

Direct catalytic hydroxylation of benzene under mild reaction conditions proceeded efficiently in the presence of a monocationic μ-nitrido-bridged iron phthalocyanine dimer with 16 peripheral methyl groups in an acetonitrile solution...

Bromine-Mediated Phenol Synthesis from Benzene

2011 ◽  
Vol 396-398 ◽  
pp. 817-822
Author(s):  
Ling Bo Li ◽  
Wen Sheng Li ◽  
Yang Qun Ren ◽  
Xiao Ping Zhou
Keyword(s):  
Metal Oxide ◽  
Phenol Synthesis ◽  
Stable Catalyst ◽  
Hydroxylation Reaction ◽  
Bromination Reaction ◽  
Stoichiometric Reaction

Phenol was synthesized from the hydroxylation of bromobenzene, which was prapared by reacting benzene with bromine. In the benzene bromination reaction, HZSM-5 (Si/Al = 400/1) was found to be a stable catalyst, which catalyzed the stoichiometric reaction of benzene with bromine. More than 90% of bromobenzene selectivity was reached over HZSM-5 and the byproduct was dibromobenzenes. In the second reaction, bromobenzene reacted with a cataloreactant to form metal bromide and phenol. This is a catalytic as well as stoichiometric reaction between bromobenzene and the metal oxide. It was found that only the supported highly dispensed metal oxide was reactive to the bromobenzene hydroxylation reaction. In this investigation, 10mol%CuO/SiO2was found to be the most active cataloreactant for bromobenzene hydroxylation reaction.

Hydroxylation of Benzene Catalyzed by Supported Phthalocyanine Catalysts

2011 ◽  
Vol 233-235 ◽  
pp. 1575-1580 ◽  
Author(s):  
Zhi Wei Guo ◽  
Ying Ying Gu ◽  
Shi Lin Zhou ◽  
Chen Hong Ren
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
Ir Spectroscopy ◽  
Experimental Results ◽  
Hydroxylation Of Benzene ◽  
Benzene Hydroxylation ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Phthalocyanine catalysts were synthesized and supported matel phthalocyanines were found to be good catalysts for benzene hydroxylation to phenol. Matel phthalocyanines were characterized by N2 absorption-desorption, FT-IR spectroscopy, and tranmsission electron microscopy. The experimental results suggested that the supported matel phthalocyanines were good catalysts for benzene hydoxylation reaction. Supported vanadium phthalocyanine performed the best catalytic activity, on which 11.6% of phenol yield and 100% of selectivity were obtained. And it was proved to be reusable in this reaction.

scholarly journals Cerium promoted V-g-C 3 N 4 as highly efficient heterogeneous catalysts for the direct benzene hydroxylation

2018 ◽  
Vol 5 (6) ◽  
pp. 180371 ◽  
Author(s):  
Cheng Wang ◽  
Liya Hu ◽  
Meiyin Wang ◽  
Bin Yue ◽  
Heyong He
Keyword(s):  
Heterogeneous Catalysts ◽  
High Dispersion ◽  
Adsorption Ability ◽  
Cerium Content ◽  
Assembly Method ◽  
Benzene Hydroxylation ◽  
Hydroxylation Reaction ◽  
Catalytic Stability ◽  
Vanadium Species ◽  
Active Centres

A series of Ce x -V-g-C 3 N 4 catalysts with different cerium content were synthesized by a facile co-assembly method. Compared with pure V-g-C 3 N 4 catalyst, the addition of cerium facilitated the high dispersion of vanadium species as well as the benzene adsorption ability of the corresponding catalysts. Also, the existence of cerium promoted the partial reduction of vanadium species, which improved the redox property of vanadium species as the active centres. The Ce x -V-g-C 3 N 4 catalysts showed considerably improved activity in the benzene hydroxylation reaction compared with V-g-C 3 N 4 catalyst. Among the catalysts studied, Ce 0.07 -0.07 V-g-C 3 N 4 exhibited the best catalytic activity with a benzene conversion of 33.7% and a phenol yield of 32.3% with good structural and catalytic stability, while only 24.7% of benzene conversion and phenol yield of 24.2% were obtained over 0.07 V-g-C 3 N 4 .

scholarly journals PREPARATION, CHARACTERIZATION AND CATALYTIC ACTIVITY OF CuO/TS-1 ON BENZENE HYDROXYLATION REACTION

2012 ◽  
Vol 15 (2) ◽  
Author(s):  
Nuni Widiarti ◽  
Ratna Ediati ◽  
Hamzah Fansuri ◽  
Didik Prasetyoko
Keyword(s):  
Catalytic Activity ◽  
Benzene Hydroxylation ◽  
Hydroxylation Reaction

One step phenol synthesis from benzene catalysed by nickel(ii) complexes

2019 ◽  
Vol 9 (21) ◽  
pp. 5991-6001 ◽  
Author(s):  
Sethuraman Muthuramalingam ◽  
Karunanithi Anandababu ◽  
Marappan Velusamy ◽  
Ramasamy Mayilmurugan
Keyword(s):  
Intermediate Species ◽  
Phenol Synthesis ◽  
Benzene Hydroxylation ◽  
One Step

Nickel(ii)complexes of N4-ligands are reported as efficient catalysts for direct benzene hydroxylation via bis(μ-oxo)dinickel(iii) intermediate species. The exclusive phenol formation is achieved with a yield of 41%.

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