Open AccessHydrogen production via methane dry reforming process over CoAl and CoMgAl-Hydrotalcite derived catalysts
Author(s) -
Zoulikha Abdelsadek,
PK Chaudhari,
Juan P. Holgado,
Feroudja Bali,
D. Halliche,
O. Cherifi,
Sergio González-Cortés,
Patrick J. Masset
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/880/1/012035
Subject(s) - hydrotalcite , catalysis , carbon dioxide reforming , calcination , methane , hydrogen production , crystallite , coal , hydrogen , coprecipitation , chemical engineering , materials science , chemistry , inorganic chemistry , syngas , metallurgy , organic chemistry , engineering
Co 0.67 Al 0.31 and Co 0.14 Mg 0.54 Al 0.31 hydrotalcite based catalysts were prepared by a co-precipitation method at a fixed pH=11, exhibiting a suitable hydrotalcite structure to be used as a catalyst in the reaction of the dry reforming of methane (DRM). Calcination at 450 °C provides the best conditions to prepare the most adapted structure and morphology to be later used in the DRM reaction. The samples were characterised by XRD, FTIR, SEM and it was shown that they exhibit a specific surface in the 30-70 g/cm 2 and a crystallite size of approximately 20 nm. The results of the TPR analysis showed clearly that CoAl-HT has better catalytic performances than CoMgAl-HT. This result can be explained by the presence of the Co 0 for the catalyst CoAl-HTc-R and the total absence in the sample CoMgAl-HTc-R. The solid CoMgAl-HTc-R requires high reduction temperature compared to CoAl-HTc-R due to the strong CoO-MgO interactions.