Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production

Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production

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 catalys...

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Main Authors: Baya Djebarri, Fouzia Touahra, Nadia Aider, Ferroudja Bali, Moussa Sehailia, Redouane Chebout, Khaldoun Bachari, Djamila Halliche
Format: Article
Language:English
Published: Diponegoro University 2020-08-01
Series:Bulletin of Chemical Reaction Engineering & Catalysis
Subjects:
mnxoy
al2o3
co2 reforming of methane
carbon resistance
Online Access:https://ejournal2.undip.ac.id/index.php/bcrec/article/view/6983
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spelling doaj-ccce1b35440e430fa3497000fd465f4c2021-05-02T00:07:47ZengDiponegoro UniversityBulletin of Chemical Reaction Engineering & Catalysis1978-29932020-08-0115233134710.9767/bcrec.15.2.6983.331-3473366Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas ProductionBaya Djebarri0Fouzia Touahra1Nadia Aider2Ferroudja Bali3Moussa Sehailia4Redouane Chebout5Khaldoun Bachari6Djamila Halliche7Department of Chemistry, Faculty of Sciences, University of M’hamed Bougara , Independence Avenue, 35000 Boumerdes, AlgeriaCentre de Recherche Scientifique et Technique en Analyses Physico-chimiques (CRAPC) , BP 384-Bou-Ismail-RP42004, Tipaza, AlgeriaDépartement de Chimie, Faculté des Sciences, Université Mouloud Mammeri de Tizi Ouzou , Tizi-ouzou, AlgeriaLaboratory of Natural Gas Chemistry, Faculty of Chemistry, Université des sciences et de la Technologie Houari-Boumediene , BP 32 16111 Algiers, AlgeriaCentre de Recherche Scientifique et Technique en Analyses Physico-chimiques (CRAPC) , BP 384-Bou-Ismail-RP42004, Tipaza, AlgeriaCentre de Recherche Scientifique et Technique en Analyses Physico-chimiques (CRAPC) , BP 384-Bou-Ismail-RP42004, Tipaza, AlgeriaCentre de Recherche Scientifique et Technique en Analyses Physico-chimiques (CRAPC) , BP 384-Bou-Ismail-RP42004, Tipaza, AlgeriaLaboratory of Natural Gas Chemistry, Faculty of Chemistry, Université des sciences et de la Technologie Houari-Boumediene , BP 32 16111 Algiers, AlgeriaHerein 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 BCREC Group. All rights reserved Corrigendum of this article: https://doi.org/10.9767/bcrec.15.3.9855.907-907https://ejournal2.undip.ac.id/index.php/bcrec/article/view/6983mnxoyal2o3co2 reforming of methanecarbon resistance
collection DOAJ
language English
format Article
sources DOAJ
author Baya Djebarri
Fouzia Touahra
Nadia Aider
Ferroudja Bali
Moussa Sehailia
Redouane Chebout
Khaldoun Bachari
Djamila Halliche
spellingShingle Baya Djebarri
Fouzia Touahra
Nadia Aider
Ferroudja Bali
Moussa Sehailia
Redouane Chebout
Khaldoun Bachari
Djamila Halliche
Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production
Bulletin of Chemical Reaction Engineering & Catalysis
mnxoy
al2o3
co2 reforming of methane
carbon resistance
author_facet Baya Djebarri
Fouzia Touahra
Nadia Aider
Ferroudja Bali
Moussa Sehailia
Redouane Chebout
Khaldoun Bachari
Djamila Halliche
author_sort Baya Djebarri
title Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production
title_short Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production
title_full Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production
title_fullStr Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production
title_full_unstemmed Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production
title_sort enhanced long-term stability and carbon resistance of ni/mnxoy-al2o3 catalyst in near-equilibrium co2 reforming of methane for syngas production
publisher Diponegoro University
series Bulletin of Chemical Reaction Engineering & Catalysis
issn 1978-2993
publishDate 2020-08-01
description 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 BCREC Group. All rights reserved Corrigendum of this article: https://doi.org/10.9767/bcrec.15.3.9855.907-907
topic mnxoy
al2o3
co2 reforming of methane
carbon resistance
url https://ejournal2.undip.ac.id/index.php/bcrec/article/view/6983
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