Carbon nanotubes catalytic activity in the ethylene hydrogenation

Bychko, Igor; Strizhak, P. E.

doi:10.1080/1536383x.2018.1502176

Cited by 11 publications

(3 citation statements)

References 32 publications

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“…Каталітичну активність відновленого оксиду графену (ВОГ) та вуглецевих нанотрубок (ВНТ) було продемонстровано в окисно-відновних та кислотно-основних реакціях, що підтверджує перспективи використання таких наноматеріалів у каталізі. Основою для застосування нановуглецевих каталізаторів в окисно-відновних реакціях, зокрема в реакціях гідрування, є металоподібна природа висококристалічних вуглецевих наноматеріалів, таких як ВНТ та ВОГ [4,5].…”

Section: каталітичні властивості нановуглецевих матеріалів у реакції селективного гідрування ацетиленуunclassified

Catalytic properties of nanocarbon materials in reaction of selective hydrogenation of acetylene

Bychko¹,

Abakumov²,

Trypolskyi³

et al. 2021

New Functional Substances and Materials for Chemical Engineering

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The chapter presents the results of studies of the catalytic properties of nanocarbon materials based on carbon nanotubes and reduced graphene oxide in the hydrogenation of ethylene, acetylene and ethylene-acetylene mixture by molecular hydrogen at atmosphere pressure. The current state of scientific approaches to the creation of nanocarbon metal-free catalysts for the hydrogenation reactions in both liquid and gas phases is presented. A possible nature of active center of the hydrogenation reaction located on the surface of the nanocarbon material is discussed. It is shown that the catalytic activity of the nanocarbon materials is not associated with metal impurities. The correlation between the structural characteristics of carbon nanomaterials and their catalytic properties in the hydrogenation reactions of unsaturated hydrocarbons is demonstrated. A comparative analysis of the catalytic activity of nanocarbon materials and catalysts that contain noble metals in the hydrogenation reaction of acetylene is presented. Finally, the fundamental possibility of creating a nanocarbon catalyst for selective hydrogenation of acetylene in excess ethylene is shown.

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Catalytic properties of nanocarbon materials in reaction of selective hydrogenation of acetylene

Bychko¹,

Abakumov²,

Trypolskyi³

et al. 2021

New Functional Substances and Materials for Chemical Engineering

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“…FTIR provides information about the impurities remaining from the nanotube synthesis, the catalytic activity of CNTs [128], and the functional organic groups attached during functionalization [124]. As an example, Fig.…”

Section: Fourier-transformed Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Carbon Nanotubes in Biomedicine

et al. 2020

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Nowadays, biomaterials have become a crucial element in numerous biomedical, preclinical, and clinical applications. The use of nanoparticles entails a great potential in these fields mainly because of the high ratio of surface atoms that modify the physicochemical properties and increases the chemical reactivity. Among them, carbon nanotubes (CNTs) have emerged as a powerful tool to improve biomedical approaches in the management of numerous diseases. CNTs have an excellent ability to penetrate cell membranes, and the sp 2 hybridization of all carbons enables their functionalization with almost every biomolecule or compound, allowing them to target cells and deliver drugs under the appropriate environmental stimuli. Besides, in the new promising field of artificial biomaterial generation, nanotubes are studied as the load in nanocomposite materials, improving their mechanical and electrical properties, or even for direct use as scaffolds in body tissue manufacturing. Nevertheless, despite their beneficial contributions, some major concerns need to be solved to boost the clinical development of CNTs, including poor solubility in water, low biodegradability and dispersivity, and toxicity problems associated with CNTs' interaction with biomolecules in tissues and organs, including the possible effects in the proteome and genome. This review performs a wide literature analysis to present the main and latest advances in the optimal design and characterization of carbon nanotubes with biomedical applications, and their capacities in different areas of preclinical research.

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“…Moreover, the CNTs are extensively used as catalysts in photo- and electrocatalysis [16]. In the field of heterogeneous catalysis, the CNTs serve either as a catalyst support [17] or as a heterogeneous catalyst, e.g., for oxidative dehydrogenation of ethylbenzene [18], alcohol conversion [19], and ethylene hydrogenation [20].…”

Section: Introductionmentioning

confidence: 99%

Surface Diffusion of C₁–C₃ Alcohols on Multiwall Carbon Nanotubes

Zhokh,

Serebrii,

Strizhak

2023

Adsorption Science & Technology

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The diffusion of methanol, ethanol, and 2-propanol using individual multiwall carbon nanotubes (MWCNT) and MWCNT bundles was investigated for the first time via application of the quartz crystal microbalance. At small times, the release of alcohol obeys the advective mechanism. In contrast, no deviations from Fick’s law were justified at large times. This situation holds for either individual MWCNTs or MWCNT bundles. The utilized MWCNTs are mainly closed from both ends. Therefore, the alcohol release is controlled by surface diffusion. The measured surface diffusivity is in the order of 10-13 m2/s. The obtained diffusivities are in close proximity with the known surface diffusion coefficients on carbon materials.

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Carbon nanotubes catalytic activity in the ethylene hydrogenation

Cited by 11 publications

References 32 publications

Catalytic properties of nanocarbon materials in reaction of selective hydrogenation of acetylene

Catalytic properties of nanocarbon materials in reaction of selective hydrogenation of acetylene

Carbon Nanotubes in Biomedicine

Surface Diffusion of C₁–C₃ Alcohols on Multiwall Carbon Nanotubes

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Carbon nanotubes catalytic activity in the ethylene hydrogenation

Cited by 11 publications

References 32 publications

Catalytic properties of nanocarbon materials in reaction of selective hydrogenation of acetylene

Catalytic properties of nanocarbon materials in reaction of selective hydrogenation of acetylene

Carbon Nanotubes in Biomedicine

Surface Diffusion of C1–C3 Alcohols on Multiwall Carbon Nanotubes

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Surface Diffusion of C₁–C₃ Alcohols on Multiwall Carbon Nanotubes