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Article: Use of multi-transition-metal-ion-exchanged zeolite 13X catalysts in methane emissions abatement

TitleUse of multi-transition-metal-ion-exchanged zeolite 13X catalysts in methane emissions abatement
Authors
KeywordsNatural gas
Catalytic combustion
Methane
Transition metal ions
Zeolite 13X
Issue Date2008
Citation
Combustion and Flame, 2008, v. 153, n. 1-2, p. 119-129 How to Cite?
AbstractMethane is a potent greenhouse gas. It has a global warming potential (GWP) 23 times greater than carbon dioxide. Reducing methane emissions would lead to substantial economic and environmental benefits. This study investigated the performance of multi-transition-metal-(Cu, Cr, Ni, and Co)-ion-exchanged zeolite 13X catalysts in methane emissions abatement. The catalytic activity in methane combustion using multi-ion-exchanged catalysts was studied with different parameters including the molar percentage of metal loading, the space velocity, and the inlet methane concentration under atmospheric pressure and at a relatively low reaction temperature of 500 °C. The performance of the catalysts was determined in terms of the apparent activation energy, the number of active sites of the catalyst, and the BET surface area of the catalyst. This study showed that multi-ion-exchanged catalysts outperformed single-ion-exchanged and acidified 13X catalysts and that lengthening the residence time led to a higher methane conversion percentage. The enhanced catalytic activity in the multi-ion-exchanged catalysts was attributed to the presence of exchanged transition ions instead of acid sites in the catalyst. The catalytic activity of the catalysts was influenced by the metal loading amount, which played an important role in affecting the apparent activation energy for methane combustion, the active sites, and the BET surface area of the catalyst. Increasing the amount of metal loading in the catalyst decreased the apparent activation energy for methane combustion and also the BET surface area of the catalyst. An optimized metal loading amount at which the highest catalytic activity was observed due to the combined effects of the various factors was determined. © 2008 The Combustion Institute.
Persistent Identifierhttp://hdl.handle.net/10722/256011
ISSN
2017 Impact Factor: 4.494
2015 SCImago Journal Rankings: 3.120
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHui, K. S.-
dc.contributor.authorChao, C. Y.H.-
dc.contributor.authorKwong, C. W.-
dc.contributor.authorWan, M. P.-
dc.date.accessioned2018-07-16T06:14:20Z-
dc.date.available2018-07-16T06:14:20Z-
dc.date.issued2008-
dc.identifier.citationCombustion and Flame, 2008, v. 153, n. 1-2, p. 119-129-
dc.identifier.issn0010-2180-
dc.identifier.urihttp://hdl.handle.net/10722/256011-
dc.description.abstractMethane is a potent greenhouse gas. It has a global warming potential (GWP) 23 times greater than carbon dioxide. Reducing methane emissions would lead to substantial economic and environmental benefits. This study investigated the performance of multi-transition-metal-(Cu, Cr, Ni, and Co)-ion-exchanged zeolite 13X catalysts in methane emissions abatement. The catalytic activity in methane combustion using multi-ion-exchanged catalysts was studied with different parameters including the molar percentage of metal loading, the space velocity, and the inlet methane concentration under atmospheric pressure and at a relatively low reaction temperature of 500 °C. The performance of the catalysts was determined in terms of the apparent activation energy, the number of active sites of the catalyst, and the BET surface area of the catalyst. This study showed that multi-ion-exchanged catalysts outperformed single-ion-exchanged and acidified 13X catalysts and that lengthening the residence time led to a higher methane conversion percentage. The enhanced catalytic activity in the multi-ion-exchanged catalysts was attributed to the presence of exchanged transition ions instead of acid sites in the catalyst. The catalytic activity of the catalysts was influenced by the metal loading amount, which played an important role in affecting the apparent activation energy for methane combustion, the active sites, and the BET surface area of the catalyst. Increasing the amount of metal loading in the catalyst decreased the apparent activation energy for methane combustion and also the BET surface area of the catalyst. An optimized metal loading amount at which the highest catalytic activity was observed due to the combined effects of the various factors was determined. © 2008 The Combustion Institute.-
dc.languageeng-
dc.relation.ispartofCombustion and Flame-
dc.subjectNatural gas-
dc.subjectCatalytic combustion-
dc.subjectMethane-
dc.subjectTransition metal ions-
dc.subjectZeolite 13X-
dc.titleUse of multi-transition-metal-ion-exchanged zeolite 13X catalysts in methane emissions abatement-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.combustflame.2007.12.003-
dc.identifier.scopuseid_2-s2.0-40849111353-
dc.identifier.volume153-
dc.identifier.issue1-2-
dc.identifier.spage119-
dc.identifier.epage129-
dc.identifier.isiWOS:000254649900010-

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