Synthesis of Filamentary Carbon Material on a Self-Organizing Ni–Pt Catalyst in the Course of 1,2-Dichloroethane Decomposition


Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

A series of model microdisperse Ni1–xPtx alloys (x =0–0.05) was synthesized by a coprecipitation method with the subsequent sintering of the precipitate in an atmosphere of H2 at 800°C. Their chemical and phase compositions were determined (by AAS and XRD analysis, respectively), and it was found that the synthesis method proposed afforded Ni–Pt solid solutions based on the face-centered nickel lattice. The kinetic features of the carbon erosion of Ni1–xPtx alloys in their contact with 1,2-dichloroethane vapor in a temperature range of 550–700°C were studied. It was found that the presence of Pt in the alloy increased the rate of accumulation of carbon product by a factor of ~1.5 regardless of the concentration of Pt. The catalyst did not undergo deactivation for 5 h of reaction to ensure a high yield of carbon material (103 g/gCat). With the use of electron microscopy (SEM and TEM techniques), it was found that the carbon product consisted of carbon fibers with a segmented structure. An increase in the concentration of Pt in the alloy to 4.3 wt % sharply changed the disintegration of the alloy to cause the formation of carbon product with a bimodal fiber diameter distribution (dav = 0.4 and 1.2 μm).

Авторлар туралы

Yu. Bauman

Boreskov Institute of Catalysis, Siberian Branch

Хат алмасуға жауапты Автор.
Email: bauman@catalysis.ru
Ресей, Novosibirsk, 630090

Yu. Rudneva

Nikolaev Institute of Inorganic Chemistry, Siberian Branch

Email: bauman@catalysis.ru
Ресей, Novosibirsk, 630090

I. Mishakov

Boreskov Institute of Catalysis, Siberian Branch; National Research Tomsk Polytechnic University

Email: bauman@catalysis.ru
Ресей, Novosibirsk, 630090; Tomsk, 634050

P. Plyusnin

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University

Email: bauman@catalysis.ru
Ресей, Novosibirsk, 630090; Novosibirsk, 630090

Yu. Shubin

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University

Email: bauman@catalysis.ru
Ресей, Novosibirsk, 630090; Novosibirsk, 630090

A. Vedyagin

Boreskov Institute of Catalysis, Siberian Branch; National Research Tomsk Polytechnic University

Email: bauman@catalysis.ru
Ресей, Novosibirsk, 630090; Tomsk, 634050

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