Syngas production via methane dry reforming over bimetallic Ni-Cu and Ni-Co catalysts with spinel and perovskite structures
| Main Authors: | Messaoudi, Hassiba, Thomas, Sébastien, Slyemi, Samira, Djaidja, Abdelhamid, Barama, Akila |
|---|---|
| Format: | Article info Journal |
| Bahasa: | eng |
| Terbitan: |
Department of Chemical Engineering - Diponegoro University
, 2020
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| Online Access: |
https://ejournal2.undip.ac.id/index.php/bcrec/article/view/9295 |
Daftar Isi:
- The LaNi0.9M0.1O3 and La2Ni0.9M0.1O4 (M= Co, Cu) catalysts with respectively perovskite and spinel structures were prepared using the sol-gel method then characterized by XRD, H2-TPR, and N2 physisorption. Their catalytic performances were examined in the dry reforming of methane (DRM) for syngas production in the temperature range 773-1073 K. The XRD analysis of fresh catalysts showed the formation of perovskites and spinel for the cobalt substituted samples while only LaNiO3 and La2NiO4 phases were observed in the case of copper substituted structures. The substitution of these two structures by copper decreases the reduction temperature compared to cobalt. The reactivity results showed that the partial substitution of nickel by copper decreases the methane activation temperature, whereas a better stability of catalytic activity and syngas production as function of reaction time was obtained via the cobalt-substituted catalysts. The TPO analysis performed on the spent catalysts indicated that the highest carbon deposition were obtained for the copper substituted samples.