Synthesis of Filamentary Carbon Material on a Self-Organizing Ni–Pt Catalyst in the Course of 1,2-Dichloroethane Decomposition
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Conference |
III Российский конгресс по катализу «РОСКАТАЛИЗ»
22-26 May 2017
,
Нижний Новгород
|
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584
, E-ISSN: 1608-3210
|
| Output data |
Year: 2018,
Volume: 59,
Number: 3,
Pages: 363–371
Pages count
: 9
DOI:
10.1134/S0023158418030023
|
| Tags |
carbon erosion; nickel–platinum alloys; self-organizing catalysts; carbon nanomaterials; segmented filaments; 1,2-dichloroethane; decomposition |
| Authors |
Bauman Yu. I.
1
,
Rudneva Yu. V.
2
,
Mishakov I. V.
1,3
,
Plyusnin P. E.
2,4
,
Shubin Yu. V.
2,4
,
Vedyagin A. A.
1,3
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
|
| 2 |
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
|
| 3 |
National Research Tomsk Polytechnic University, Tomsk, 634050 Russia
|
| 4 |
Novosibirsk State University, Novosibirsk, 630090 Russia
|
|
Funding (1)
|
1
|
Russian Foundation for Basic Research
|
16-33-60074
|
A series of model microdisperse Ni1–xPt x 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–xPt x 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).