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Yury S Nechaev, Speaker at Catalysis Conferences
Bardin Central Research Institute for Ferrous Metallurgy, Russian Federation
Title : On the long-term problem of the “super” storage of hydrogen in catalytically grown graphite nanofibers

Abstract:

In this work, an effective methodology was applied to analyze the well-known (but not reproduced by anyone) data on the “super” sorption of hydrogen in the know-how activated graphite nanofibers (GNF). Such processing of the thermal desorption and thermogravimetric data made it possible for the first time to determine (by two independent methods) the characteristics of the main hydrogen desorption peak, namely: the temperature of the highest desorption rate Tmax = 914- 950 K, the activation energy of desorption Q = 39 ± 3 kJ/mol(H2), the frequency factor of the rate constant of the desorption process K0 ≈ 0.15 s-1, the amount of released hydrogen ~ 7 wt%. These results are in satisfactory agreement with the results of the analysis of the data. At the same time, it should be noted that a large number of attempts to reproduce experimental data, for example, work, have not been crowned with success. The know-how technology of GNV activation in works can be disclosed by analyzing experimental data, especially electron microscopic data. The role and atomic mechanism of the spillover effect in the “super” sorption are considered. Some specific factors and aspects associated with anomalous results are considered in reviews.

Audience take-away:

  • The audience will learn about such effective approach, methodology and new results, which could be used in their studies.
  • The audience and other faculty could use such approach, methodology and results in their research and/or teaching. It could provide a practical solution to a problem, it could simplify or make a designer’s job more efficient, and it could improve the accuracy of a design, or provide new information to assist in a design problem.

Biography:

Yury S. Nechaev is a chief researcher-analyst (from 1998) in Kurdjumov Centre of Metals Science and Physics, within Bardin Central Research Institute for Ferrous Metallurgy, Moscow, Russia. He is a Professor of materials science and metals physics (Dpt.), Doctor of physical-mathematical sciences.  He has published more than 150 research articles in scientific journals.

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