Premium
Cover Feature: Insight by In Situ Gas Electron Microscopy on the Thermal Behaviour and Surface Reactivity of Cobalt Nanoparticles (ChemCatChem 18/2018)
Author(s) -
Dembélé Kassiogé,
Bahri Mounib,
Melinte Georgian,
Hirlimann Charles,
Berliet Adrien,
Maury Sylvie,
Gay AnneSophie,
Ersen Ovidiu
Publication year - 2018
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201801445
Subject(s) - nanomaterial based catalyst , nanoparticle , reactivity (psychology) , catalysis , transmission electron microscopy , cobalt , chemical engineering , hydrogen , carbon nanotube , materials science , carbon fibers , nanotechnology , chemistry , syngas , inorganic chemistry , organic chemistry , composite material , medicine , alternative medicine , pathology , engineering , composite number
The Cover Feature shows the combination of in situ transmission electron microscopy and mass spectrometry used to follow the dynamic process occurring on a catalytic material in real time at nanometric scale. In their Full Paper, K. Dembele et al. studied the thermal behavior and surface reactivity of Co nanocatalysts under a syngas (H 2 /CO=2) atmosphere. The catalyst was stable on the time‐scale of the experiment at standard operating temperature of 220 °C for 2 h. Upon increasing the temperature to 400 °C, carbon layers encapsulated the Co nanoparticles. Once the temperature was increased to 500–700 °C, the surface reactivity drastically changed and the Co NPs catalyze the growth of carbon nanotubes (CNTs), following the tip‐growth mechanism. In addition, it was found that the presence of hydrogen increases three times the growth rate of CNTs. More information can be found in the Full Paper by K. Dembele et al. on page 4004 in Issue 18, 2018 (DOI: 10.1002/cctc.201800854).