1Department of Chemistry, Faculty of Sciences, University of M’hamed Bougara, Independence Avenue, 35000 Boumerdes, Algeria
2Centre de Recherche Scientifique et Technique en Analyses Physico-chimiques (CRAPC), BP 384-Bou-Ismail-RP42004, Tipaza, Algeria
3Département de Chimie, Faculté des Sciences, Université Mouloud Mammeri de Tizi Ouzou, Tizi-ouzou, Algeria
4 Laboratory of Natural Gas Chemistry, Faculty of Chemistry, Université des sciences et de la Technologie Houari-Boumediene, BP 32 16111 Algiers, Algeria
BibTex Citation Data :
@article{BCREC6983, author = {Baya Djebarri and Fouzia Touahra and Nadia Aider and Ferroudja Bali and Moussa Sehailia and Redouane Chebout and Khaldoun Bachari and Djamila Halliche}, title = {Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {15}, number = {2}, year = {2020}, keywords = {MnxOy; Al2O3; CO2 reforming of methane; carbon resistance}, abstract = { Herein we study the catalytic activity/stability of a new generation of cheap and readily available Ni and Al-based catalysts using two Mn precursors, namely Mn(NO 3 ) 2 and Mn(EDTA) 2- complex in the reaction of CO 2 reforming of methane. In this respect, Ni/Al 2 O 3 and two types of Ni/Mn x O y -Al 2 O 3 catalysts were successfully synthesized and characterized using various analytical techniques: TGA, ICP, XRD, BET, FTIR, TPR-H 2 , SEM-EDX, TEM, XPS and TPO-O 2 . Utilization of Mn(EDTA) 2- as synthetic precursor successfully furnished Ni/Al 2 O 3 -Mn x O y Y (Y = EDTA) catalyst which was more active during CO 2 reforming of methane when compared to Ni/Mn x O y -Al 2 O 3 catalyst, synthesized using Mn(NO 3 ) 2 precursor. Compared to Ni/Mn x O y -Al 2 O 3 , Ni/Al 2 O 3 -Mn x O y Y catalyst afforded near-equilibrium conversion values at 700 °C (ca. 95% conversion for CH 4 and CO 2 , and H 2 /CO = 0.99 over 50 h reaction time). Also, Ni/Al 2 O 3 -Mn x O y Y showed more resistance to carbon formation and sintering; interestingly, after 50 h reaction time, the size of Ni 0 particles in Ni/Mn x O y -Al 2 O 3 almost doubled while that of Ni/Al 2 O 3 -Mn x O y Y remained unchanged. The elevated conversion of CO 2 and CH 4 in conjunction with the observed low carbon deposition on the surface of our best catalyst (Ni/Al 2 O 3 -Mn x O y Y) indicated the presence of Mn x O y oxide positioning mediated simultaneous in-situ carbon elimination with subsequent generation of oxygen vacant sites on the surface for more CO 2 adsorption. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License ( https://creativecommons.org/licenses/by-sa/4.0 ). Corrigendum to this article is here : https://doi.org/10.9767/bcrec.15.3.9855.907-907 }, issn = {1978-2993}, pages = {331--347} doi = {10.9767/bcrec.15.2.6983.331-347}, url = {https://ejournal2.undip.ac.id/index.php/bcrec/article/view/6983} }
Refworks Citation Data :
Herein we study the catalytic activity/stability of a new generation of cheap and readily available Ni and Al-based catalysts using two Mn precursors, namely Mn(NO3)2 and Mn(EDTA)2- complex in the reaction of CO2 reforming of methane. In this respect, Ni/Al2O3 and two types of Ni/MnxOy-Al2O3 catalysts were successfully synthesized and characterized using various analytical techniques: TGA, ICP, XRD, BET, FTIR, TPR-H2, SEM-EDX, TEM, XPS and TPO-O2. Utilization of Mn(EDTA)2- as synthetic precursor successfully furnished Ni/Al2O3-MnxOyY (Y = EDTA) catalyst which was more active during CO2 reforming of methane when compared to Ni/MnxOy-Al2O3 catalyst, synthesized using Mn(NO3)2 precursor. Compared to Ni/MnxOy-Al2O3, Ni/Al2O3-MnxOyY catalyst afforded near-equilibrium conversion values at 700 °C (ca. 95% conversion for CH4 and CO2, and H2/CO = 0.99 over 50 h reaction time). Also, Ni/Al2O3-MnxOyY showed more resistance to carbon formation and sintering; interestingly, after 50 h reaction time, the size of Ni0 particles in Ni/MnxOy-Al2O3 almost doubled while that of Ni/Al2O3-MnxOyY remained unchanged. The elevated conversion of CO2 and CH4 in conjunction with the observed low carbon deposition on the surface of our best catalyst (Ni/Al2O3-MnxOyY) indicated the presence of MnxOy oxide positioning mediated simultaneous in-situ carbon elimination with subsequent generation of oxygen vacant sites on the surface for more CO2 adsorption. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Corrigendum to this article is here: https://doi.org/10.9767/bcrec.15.3.9855.907-907
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