Plasma-chemically brominated single-walled carbon nanotubes as novel catalysts for oil hydrocarbons aerobic oxidation

Zeynalov, Eldar; Friedrich, J.; Meyer‐Plath, Asmus; Hidde, Gundula; Nuriyev, Lyatif; Aliyeva, Aygun; Cherepnova, Yutta

doi:10.1016/j.apcata.2013.01.003

Cited by 11 publications

(4 citation statements)

References 7 publications

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“…In the cathode, gaseous hydrogen is produced to complete the overall water splitting process. 557 Even though enormous efforts have been devoted to experimentally maximize the energy conversion efficiency of the PEC water splitting reaction, the reported efficiency of the single-junction cell is still far from satisfactory for practical applications. 558 The slow progress can be attributed to the lack of suitable photoelectrodes with wide-range light absorption, high carrier mobility, long carrier lifetime, and excellent stability.…”

Section: Photoelectrochemical Cellsmentioning

confidence: 99%

Carbon nanotube catalysts: recent advances in synthesis, characterization and applications

et al. 2015

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Carbon nanotubes are promising materials for various applications. In recent years, progress in manufacturing and functionalizing carbon nanotubes has been made to achieve the control of bulk and surface properties including the wettability, acid-base properties, adsorption, electric conductivity and capacitance. In order to gain the optimal benefit of carbon nanotubes, comprehensive understanding on manufacturing and functionalizing carbon nanotubes ought to be systematically developed. This review summarizes methodologies of manufacturing carbon nanotubes via arc discharge, laser ablation and chemical vapor deposition and functionalizing carbon nanotubes through surface oxidation and activation, doping of heteroatoms, halogenation, sulfonation, grafting, polymer coating, noncovalent functionalization and nanoparticle attachment. The characterization techniques detecting the bulk nature and surface properties as well as the effects of various functionalization approaches on modifying the surface properties for specific applications in catalysis including heterogeneous catalysis, photocatalysis, photoelectrocatalysis and electrocatalysis are highlighted.

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Section: Photoelectrochemical Cellsmentioning

confidence: 99%

Carbon nanotube catalysts: recent advances in synthesis, characterization and applications

et al. 2015

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“…Реактор -окислительная ячейка простой конструкции оказалась наиболее приемлемой для гетерогенного каталитического окисления в жидкой фазе [32]. Проточные реакторы, которые обычно используются для проведения жидкофазного окисления углеводородов и нефтяных фракций обычно снабжены фильтром Шотта, обеспечивающим равномерное распределение воздуха по объёму реакционной смеси [33,34]. Однако, в случае использования твёрдых катализаторов, особенно нанометрового диапазона, частицы катализатора забивают отверстия фильтра и реакция протекает в нарушенном режиме со пониженной конверсией исходного углеводорода.…”

Section: экспериментальная частьunclassified

Aerobic-peroxide oxidation of naphthalene in the presence of transition metal on a nanocarbon carrier

Zeynalov¹,

Naghiyev²,

Huseynov³

et al. 2022

SOCAR Proceedings

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The paper describes the results of aerobic-peroxide catalytic oxidation of naphthalene in the presence of iron-containing multi-walled carbon nanotubes Fe@MWCNT. The active nanocarbon substrate containing α-iron atoms and carbides realizes by the Fenton reaction active formation of active particles and intensive oxidation of the hydrocarbon under rather mild conditions. It was found that at the temperature range 333 - 353K, in the presence of hydrogen peroxide (30% aqueous solution) and Fe@MWCNT (Fe ≈3.7 wt. %), under intense air current, the reaction proceeds without destroying the cyclic structure of the molecule with predominant formation of phthalic anhydride and naphthol. Identification of the functional groups of the main target products was performed by the infrared (IR) spectroscopy. The results obtained can be proposed for further development of such studies and bringing them into compliance with the standards of the industrial process. Keywords: aerobic oxidation of hydrocarbons; oxidation of naphthalene; hydrogen peroxide; multi-walled carbon nanotubes; nanocarbon catalysis; Fenton system, oxygencontaining aromatic compounds.

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“…Recently we have surprisingly discovered the catalytic influence of Br-containing CNTs [16,17]. Continuing this scientific line which is full of many unknown sites, we have again studied the influence of other Br-containing multiwalled CNTs on the oxidation environment to get more convincing evidences.…”

Section: Introductionmentioning

confidence: 96%

Effect of Br-Grafted Multi-Walled Carbon Nanotubes on the Model Oxidative Environment

Zeynalov¹,

Friedrich²,

Wagner³

et al. 2015

ChChT

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Two samples of brominated multi-walled carbon nanotubes [(Br) n-MWCNTs] produced by the plasma-chemical technique were involved in the liquidphase initiated oxidation of cumene. The powerful catalytic effect of (Br) n-MWCNTs has been confirmed to recommend the substances for the use in oxidation of alkyl aromatic hydrocarbons as active additives. Obviously this phenomenon originates from the peculiarities of electronic configuration of (Br) n-MWCNTs pattern. To elucidate a mechanism of the acceleration action of the functionalized CNTs the model experiment with a singlewalled carbon nanotubes [(Br) n-SWCNTs] at standard model conditions was conducted. There has been established that Br-groups are consumed during the reaction and (Br) n-CNTs act in the model cumene oxidation as an additional source of free radicals and may be considered as a complementary initiator. The general scheme of oxidation has been proposed and additional initiation rates promoted by (Br) n-MWCNTs have been calculated.

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Plasma-chemically brominated single-walled carbon nanotubes as novel catalysts for oil hydrocarbons aerobic oxidation

Cited by 11 publications

References 7 publications

Carbon nanotube catalysts: recent advances in synthesis, characterization and applications

Carbon nanotube catalysts: recent advances in synthesis, characterization and applications

Aerobic-peroxide oxidation of naphthalene in the presence of transition metal on a nanocarbon carrier

Effect of Br-Grafted Multi-Walled Carbon Nanotubes on the Model Oxidative Environment

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