Effect of hydrogen accumulation on the surface of Ni-containing nanodiamond catalysts

Tveritinova, E. A.; Zhitnev, Yury N.; Кулакова, И. И.; Харланов, А. Н.; Cherkasov, Nikolay; Savilov, S. V.; Лунин, В. В.

doi:10.1016/j.mencom.2013.09.002

Cited by 6 publications

(1 citation statement)

References 18 publications

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“…In [23], we found that ND-based catalysts were capable of retaining significant amounts of the active hydrogen that forms during the dissociative adsorption of molecular hydrogen. It was shown that the active hydrogen adsorbed on the surface of a Ni/ND catalyst is capable of hydrogenating acetylene in a nitrogen stream, while acetylene hydrogenation does not occur in either a hydrogen or a nitrogen stream over ND subjected to preliminary high-temperature hydrogen treatment of its surface.…”

Section: Physical Chemistry Of Nanoclusters and Nanomaterialsmentioning

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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Section: Physical Chemistry Of Nanoclusters and Nanomaterialsmentioning

confidence: 99%