New hybrid material based on multiwalled carbon nanotubes decorated with rhenium nanoparticles

Kremlev, K. V.; Obiedkov, A. M.; Ketkov, Sergey Yu.; Kaverin, B. S.; Semenov, N. M.; Домрачев, Г. А.; Gusev, S. A.; Tatarskiy, D. A.; Yunin, P. A.

doi:10.1134/s1027451015040114

Cited by 13 publications

(8 citation statements)

References 10 publications

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“…A myriad of chemical approaches to synthesizing supported rhenium nanoparticles (Re NPs) are commonly found in the literature [26–37] . Their attractiveness is based on the simplicity of the processes, achieving features that are of vital importance in catalysis, such as sharp particle size distributions or well‐defined crystalline structures.…”

Section: Synthesis Of Heterogeneous Rhenium‐based Hydrogenation Catalystsmentioning

confidence: 99%

“…Usually, in CVD, metallic Re is heated in the presence of carbon‐based supports [42] . As an alternative, dirhenium decacarbonyl, Re 2 (CO) 10 can be heated in the presence of the support, leading to the thermal decomposition of the dirhenium decacarbonyl complex and in situ formation of metallic Re NPs and carbon monoxide [35] . The CVD and decomposition methods are usually employed with carbon‐based supports rather than oxide or zeolite ones, and the Re NPs prepared by these methods tend to be larger compared to those originated from wet impregnation.…”

Section: Synthesis Of Heterogeneous Rhenium‐based Hydrogenation Catalystsmentioning

confidence: 99%

“…Notwithstanding, additives such as oleic acid can be added to the solution in an attempt to control particle size distribution [43,44] . Although there are particularities of each method, Re NPs originated from CVD and thermal decomposition of Re 2 (CO) 10 tend to have a hexagonal crystalline structure which is traditionally observed by XRD patterns, and, depending on size, hexagonal rhenium crystallites can also be seen by scanning electron microscopy (SEM) [35] …”

Section: Synthesis Of Heterogeneous Rhenium‐based Hydrogenation Catalystsmentioning

confidence: 99%

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Rhenium – A Tuneable Player in Tailored Hydrogenation Catalysis

et al. 2021

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Although rhenium may not be the most common choice of active species in catalysis, it has been reported as a highly active and selective catalyst over a wide range of reactions. Its applications include hydrogenation reactions of great relevance in the field of renewable materials and bio‐derived platform molecules, such as valorization of lignin, CO2, and carboxylic acids. Different from several transition metals, rhenium presents oxidation numbers varying from −3 to +7. Such diversity in the coordination chemistry of rhenium is reflected in the variety of known rhenium compounds, since this metal can form stable structures such as ligand‐bridged multinuclear and organometallic compounds as well as inorganic oxides, metal‐organic frameworks, and clusters. The exceptional flexibility in rhenium speciation yields numerous selective catalysts; however, it also makes the characterization of rhenium catalysts challenging, and its influence on the catalytic activity is not trivial. This review will outline the most established rhenium‐based materials used in hydrogenation catalysis and shed some light on the relation of rhenium species to catalyst selectivity based on advanced characterization techniques. Finally, our perspectives on the use of rhenium catalysts to produce value‐added products will be given.

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Section: Synthesis Of Heterogeneous Rhenium‐based Hydrogenation Catalystsmentioning

confidence: 99%

Section: Synthesis Of Heterogeneous Rhenium‐based Hydrogenation Catalystsmentioning

confidence: 99%

Section: Synthesis Of Heterogeneous Rhenium‐based Hydrogenation Catalystsmentioning

confidence: 99%

See 1 more Smart Citation

Rhenium – A Tuneable Player in Tailored Hydrogenation Catalysis

et al. 2021

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“…В настоящее время активно проводятся работы по синтезу и исследованию свойств подобного рода гетерострук-тур с использованием различных методов синтеза [9]. Среди них можно выделить методы, использующие технологию MOCVD (Metal Organic Chemical Vapor Deposition) [10,11]. Однако анализ публикаций показал, что имеется всего одна работа, авторы которой разработали технологию синтеза гибридного материала на основе МУНТ с поверхностью, по-крытой оксидом хрома.…”

Section: поступило в редакцию 15 июля 2016 гunclassified

Осаждение Нанокристаллических Покрытий Оксида Хрома Нестехиометрического Состава На Поверхности Многостенных Углеродных Нанотрубок При Пиролизе Паров Ацетилацетоната Хрома

Кремлев¹,

Объедков²,

Кетков³

et al. 2017

Письма В Журнал Технической Физики

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Впервые на поверхность многостенных углеродных нанотрубок (МУНТ) с использованием технологии MOCVD и ацетилацетоната хрома в качестве прекурсора проведено осаждение нанокристаллических покрытий оксида хрома нестехиометрического состава (Cr2O2.4). Новый гибридный наноматериал (Cr2O2.4/МУНТ) охарактеризован методами рентгенофазового анализа, растровой электронной микроскопии и термогравиметрического анализа. Показано, что окисление гибридного наноматериала на воздухе в мягких условиях, при температуре 380oC приводит к образованию на поверхности МУНТ нанокристаллического оксида хрома (Cr2O3). DOI: 10.21883/PJTF.2017.08.44537.16416

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“…Short irradiation allows to decompose the rhenium precursor into metallic rhenium. Currently, the most common method to deposit rhenium on novel host materials like carbon nanotubes is chemical vapor deposition technology, utilizing decacarbonyldirhenium as a substrate [15]. However, decoration of multiwalled carbon nanotubes with rhenium can be performed using simple ultrasound mixing with perrhenic acid as well [16].…”

Section: Introductionmentioning

confidence: 99%

Active Carbon Modified by Rhenium Species as a Perspective Supercapacitor Electrode

et al. 2020

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We have reported the synthesis of a new kind of composite combining a rhenium precursor and active carbon. Similarly to other refractory metals, rhenium exhibits several oxidation states that makes it an ideal candidate for redox-type energy storage materials. A simple impregnation of pretreated active carbon with ammonium perrhenate allowed to produce an electrode material with an enhanced specific capacitance. There was not any observed detrimental effect of metal species on the cycle life of the electrode. A small increase in charge transfer resistance was counter-balanced by the improved impedance in the whole examined range.

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New hybrid material based on multiwalled carbon nanotubes decorated with rhenium nanoparticles

Cited by 13 publications

References 10 publications

Rhenium – A Tuneable Player in Tailored Hydrogenation Catalysis

Rhenium – A Tuneable Player in Tailored Hydrogenation Catalysis

Active Carbon Modified by Rhenium Species as a Perspective Supercapacitor Electrode

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