Palladium on ultradisperse diamond and activated carbon: the relation between structure and activity in hydrodechlorination

Kachevskii, S. A.; Голубина, Е. В.; Локтева, Е. С.; Лунин, В. В.

doi:10.1134/s0036024407060064

Cited by 27 publications

(13 citation statements)

References 22 publications

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“…Also, by comparing the HR-TEMi mageso ft he Pd/ND (Figure 1b)a nd Pd/ AC ( Figure S2), it seems that the metal particles on the surface of Pd/ND are well exposed in comparison to Pd/AC, which may further increase access to the active sites. Kachevskii et al [31] observed significant differencesi nt he temperatureprogrammed reductions pectra of PdO/ND andP dO/AC.T he peak of reduction of PdO on NDs shiftedt owards lower temperaturesi nc omparison to PdO/AC.T he difference was explained based on the easy reduction of PdO on the nanodiamond surface owing to weak interactions between the metal and support and the unblockinge ffect offered by the support, which increases the availability of the metal towards hydrogen. As our catalytic system matches very closely to the reported work, hence asimilareffect mayalso operate during the reduction of benzonitrile.…”

Section: Surfacechemistry Of the Carbon Supportmentioning

confidence: 95%

Palladium Supported on Nanodiamonds as an Efficient Catalyst for the Hydrogenating Deamination of Benzonitrile and Related Compounds

et al. 2016

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Palladium nanoparticles were successfully prepared on a nanodiamond (ND) support and used for the hydrogenating deamination of benzonitrile, aromatic imines, and amines for the first time. The developed methodology was further used for the in situ conversion of aldehydes into hydrocarbons, including a biomass‐derived model compound. The activity of the catalyst was compared with palladium supported on activated carbon (AC) under identical conditions and the performance of Pd/ND was found to be superior to Pd/AC. The origin of the difference in the catalytic performance was considered. Finally, an attempt has been made to understand the mechanism through the identification of the side products by GCMS analysis.

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Section: Surfacechemistry Of the Carbon Supportmentioning

confidence: 95%

Palladium Supported on Nanodiamonds as an Efficient Catalyst for the Hydrogenating Deamination of Benzonitrile and Related Compounds

et al. 2016

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“…We could find no literature data on the conversion of chlorinated hydrocarbons over metal-free catalysts, particularly on the surfaces of carbon nanomaterials. In studies of hydrodechlorination processes [5,22], ND was used for supports and functional groups were seen as sites of active metal phase adsorption.…”

Section: Physical Chemistry Of Nanoclusters and Nanomaterialsmentioning

confidence: 99%

“…The available literature data on the catalytic properties of ND mostly concern its use in supports of metallic phases [3][4][5][6][7][8][9]. According to the authors of [6,8], the surface functional groups of ND participate in the formation of active sites.…”

Section: Introductionmentioning

confidence: 99%

Effect of structure and surface properties on the catalytic activity of nanodiamond in the conversion of 1,2-dichloroethane

Tveritinova

Zhitnev

Кулакова

et al. 2015

Russ. J. Phys. Chem.

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The catalytic activity of a detonation nanodiamond and its Ni-containing forms in the conversion of 1,2-dichloroethane is studied and compared with the activity of other carbon and nanocarbon materials: carbon nanotubes, "Dalan" synthetic diamond, and fluorinated graphite. The surface and structure of the carbon materials are characterized using XRD, diffuse reflectance IR spectroscopy, XPS, BET, and TPR. The catalytic properties of the materials are studied using the pulsed microcatalytic method. It is found that the synthetic diamond, the nanodiamond, and its Ni-containing forms are catalysts for dichloroethane conversion in a nitrogen atmosphere, where the main product is ethylene. It is noted that the catalytic activity of deactivated diamond catalysts is restored after hydrogen treatment. It is shown that the carbon structure of the nanodiamond and the "Dalan" synthetic diamond with hydrogen groups located on it plays a key role in the dichloroethane conversion. It is found that the nanodiamond acts simultaneously as a catalyst and an adsorbent of chlorine-containing products of dichloroethane conversion.

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“…The hydrodynamic radii, obtained by dynamic light scattering method, were used to calculate the surface area of NDs in suspensions. According to [9], the fraction of micropores is less than 1 %, which is why we treat our particles as spheres. The obtained results of surface areas are the following: for DND 10 nm -17.1 · 10 −2 m 2 , for DND 5 nm -34.3 · 10 −2 m 2 , for ND-NV -2 · 10 −2 m 2 .…”

Section: Interaction Of Dna Chains and The Nanodiamond Surfacementioning

confidence: 99%

DNA-nanodiamond interactions influence on fluorescence of nanodiamonds

Vervald¹,

Laptinskiy²,

Власов³

et al. 2018

Nanosystems: Phys. Chem. Math.

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In this study, the interaction between DNA and the surface of detonation nanodiamonds and nanodiamonds with NV centers is investigated, and the quantitative parameters of this interaction are calculated. The influence of interaction of DNA with nanodiamonds on the fluorescent properties of nanodiamonds is established. A correlation was found between the efficiency of DNA interaction with the surface of the detonation nanodiamonds and the changes of their fluorescence: the more DNA bonds with the nanodiamond surface groups -the stronger the fluorescence of detonation nanodiamonds increases in water.

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Palladium on ultradisperse diamond and activated carbon: the relation between structure and activity in hydrodechlorination

Cited by 27 publications

References 22 publications

Palladium Supported on Nanodiamonds as an Efficient Catalyst for the Hydrogenating Deamination of Benzonitrile and Related Compounds

Palladium Supported on Nanodiamonds as an Efficient Catalyst for the Hydrogenating Deamination of Benzonitrile and Related Compounds

Effect of structure and surface properties on the catalytic activity of nanodiamond in the conversion of 1,2-dichloroethane

DNA-nanodiamond interactions influence on fluorescence of nanodiamonds

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