A DFT study of hydrogen adsorption on Be, Mg and Ca frameworks in erionite zeolite
[Display omitted] •Mg-ERI and Ca-ERI clusters have much lower chemical potential and hardness.•Adsorption enthalpies for Mg- and Ca-ERI are importantly greater than the liquefaction enthalpy of hydrogen.•Mg-ERI and Ca-ERI clusters have much HOMO-LUMO gap indicating higher reactivity.•Ca- and Mg-ERI...
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| Veröffentlicht in: | Applied surface science 2017-02, Vol.394, p.9-15 |
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| creator | Fellah, Mehmet Ferdi |
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•Mg-ERI and Ca-ERI clusters have much lower chemical potential and hardness.•Adsorption enthalpies for Mg- and Ca-ERI are importantly greater than the liquefaction enthalpy of hydrogen.•Mg-ERI and Ca-ERI clusters have much HOMO-LUMO gap indicating higher reactivity.•Ca- and Mg-ERI are potential cryoadsorbent materials for hydrogen storage.
The molecular hydrogen adsorption was investigated on additional frameworks with earth alkaline metal atoms (Be, Mg and Ca) in 24T ERI zeolite cluster model by means of Density Functional Theory study. HOMO and LUMO energy values, chemical potential, chemical hardness, electronegativity, adsorption energy and adsorption enthalpy values have been calculated in this study. Mg-ERI and Ca-ERI clusters have much lower chemical potentials with much lower adsorption energy values when compared to the value of Be-ERI cluster. Additionally, they are softer than Be-ERI cluster with respect to their lower chemical hardness values. Hydrogen adsorption enthalpy values were computed as −3.6 and −3.9kJ/mol on Mg-ERI and Ca-ERI clusters, respectively. These adsorption enthalpy values are significantly larger than the enthalpy value of liquefaction for hydrogen molecule. This consequently specifies that Mg-ERI and Ca-ERI zeolite structures which have higher chemical reactivity appear to be a promising candidate cryoadsorbent for hydrogen storage. |
| doi_str_mv | 10.1016/j.apsusc.2016.10.065 |
| format | Article |
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•Mg-ERI and Ca-ERI clusters have much lower chemical potential and hardness.•Adsorption enthalpies for Mg- and Ca-ERI are importantly greater than the liquefaction enthalpy of hydrogen.•Mg-ERI and Ca-ERI clusters have much HOMO-LUMO gap indicating higher reactivity.•Ca- and Mg-ERI are potential cryoadsorbent materials for hydrogen storage.
The molecular hydrogen adsorption was investigated on additional frameworks with earth alkaline metal atoms (Be, Mg and Ca) in 24T ERI zeolite cluster model by means of Density Functional Theory study. HOMO and LUMO energy values, chemical potential, chemical hardness, electronegativity, adsorption energy and adsorption enthalpy values have been calculated in this study. Mg-ERI and Ca-ERI clusters have much lower chemical potentials with much lower adsorption energy values when compared to the value of Be-ERI cluster. Additionally, they are softer than Be-ERI cluster with respect to their lower chemical hardness values. Hydrogen adsorption enthalpy values were computed as −3.6 and −3.9kJ/mol on Mg-ERI and Ca-ERI clusters, respectively. These adsorption enthalpy values are significantly larger than the enthalpy value of liquefaction for hydrogen molecule. This consequently specifies that Mg-ERI and Ca-ERI zeolite structures which have higher chemical reactivity appear to be a promising candidate cryoadsorbent for hydrogen storage.</description><identifier>ISSN: 0169-4332</identifier><identifier>EISSN: 1873-5584</identifier><identifier>DOI: 10.1016/j.apsusc.2016.10.065</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Adsorption ; Beryllium ; Clusters ; DFT ; Earth alkaline metals ; Enthalpy ; ERI zeolite ; Hardness ; Hydrogen adsorption ; Hydrogen storage ; Surface chemistry ; Zeolites</subject><ispartof>Applied surface science, 2017-02, Vol.394, p.9-15</ispartof><rights>2016 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-3c258510631f89c1434030309f61a6ce68a4104da0d73010e6daf96428a59b743</citedby><cites>FETCH-LOGICAL-c446t-3c258510631f89c1434030309f61a6ce68a4104da0d73010e6daf96428a59b743</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.apsusc.2016.10.065$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Fellah, Mehmet Ferdi</creatorcontrib><title>A DFT study of hydrogen adsorption on Be, Mg and Ca frameworks in erionite zeolite</title><title>Applied surface science</title><description>[Display omitted]
•Mg-ERI and Ca-ERI clusters have much lower chemical potential and hardness.•Adsorption enthalpies for Mg- and Ca-ERI are importantly greater than the liquefaction enthalpy of hydrogen.•Mg-ERI and Ca-ERI clusters have much HOMO-LUMO gap indicating higher reactivity.•Ca- and Mg-ERI are potential cryoadsorbent materials for hydrogen storage.
The molecular hydrogen adsorption was investigated on additional frameworks with earth alkaline metal atoms (Be, Mg and Ca) in 24T ERI zeolite cluster model by means of Density Functional Theory study. HOMO and LUMO energy values, chemical potential, chemical hardness, electronegativity, adsorption energy and adsorption enthalpy values have been calculated in this study. Mg-ERI and Ca-ERI clusters have much lower chemical potentials with much lower adsorption energy values when compared to the value of Be-ERI cluster. Additionally, they are softer than Be-ERI cluster with respect to their lower chemical hardness values. Hydrogen adsorption enthalpy values were computed as −3.6 and −3.9kJ/mol on Mg-ERI and Ca-ERI clusters, respectively. These adsorption enthalpy values are significantly larger than the enthalpy value of liquefaction for hydrogen molecule. This consequently specifies that Mg-ERI and Ca-ERI zeolite structures which have higher chemical reactivity appear to be a promising candidate cryoadsorbent for hydrogen storage.</description><subject>Adsorption</subject><subject>Beryllium</subject><subject>Clusters</subject><subject>DFT</subject><subject>Earth alkaline metals</subject><subject>Enthalpy</subject><subject>ERI zeolite</subject><subject>Hardness</subject><subject>Hydrogen adsorption</subject><subject>Hydrogen storage</subject><subject>Surface chemistry</subject><subject>Zeolites</subject><issn>0169-4332</issn><issn>1873-5584</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9UMFKxDAQDaLguvoHHnL0YGvSpGl7EdbVVWFFkPUcYjJds3abmrTK-vVmqWeZgcfMe29gHkLnlKSUUHG1SVUXhqDTLE5xlRKRH6AJLQuW5HnJD9EkElXCGcuO0UkIG0JoFtkJepnh28UKh34wO-xq_L4z3q2hxcoE57veuhbHvoFL_LTGqjV4rnDt1Ra-nf8I2LYYfBTZHvAPuCbiKTqqVRPg7A-n6HVxt5o_JMvn-8f5bJlozkWfMJ3lZU6JYLQuK00544TFqmpBldAgSsUp4UYRUzBCCQij6krwrFR59VZwNkUX493Ou88BQi-3NmhoGtWCG4KkpeB5wWhWRCkfpdq7EDzUsvN2q_xOUiL3EcqNHCOU-wj32xhhtF2PNohvfFnwMmgLrQZjPeheGmf_P_ALArt50A</recordid><startdate>20170201</startdate><enddate>20170201</enddate><creator>Fellah, Mehmet Ferdi</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20170201</creationdate><title>A DFT study of hydrogen adsorption on Be, Mg and Ca frameworks in erionite zeolite</title><author>Fellah, Mehmet Ferdi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c446t-3c258510631f89c1434030309f61a6ce68a4104da0d73010e6daf96428a59b743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Adsorption</topic><topic>Beryllium</topic><topic>Clusters</topic><topic>DFT</topic><topic>Earth alkaline metals</topic><topic>Enthalpy</topic><topic>ERI zeolite</topic><topic>Hardness</topic><topic>Hydrogen adsorption</topic><topic>Hydrogen storage</topic><topic>Surface chemistry</topic><topic>Zeolites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fellah, Mehmet Ferdi</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied surface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fellah, Mehmet Ferdi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A DFT study of hydrogen adsorption on Be, Mg and Ca frameworks in erionite zeolite</atitle><jtitle>Applied surface science</jtitle><date>2017-02-01</date><risdate>2017</risdate><volume>394</volume><spage>9</spage><epage>15</epage><pages>9-15</pages><issn>0169-4332</issn><eissn>1873-5584</eissn><abstract>[Display omitted]
•Mg-ERI and Ca-ERI clusters have much lower chemical potential and hardness.•Adsorption enthalpies for Mg- and Ca-ERI are importantly greater than the liquefaction enthalpy of hydrogen.•Mg-ERI and Ca-ERI clusters have much HOMO-LUMO gap indicating higher reactivity.•Ca- and Mg-ERI are potential cryoadsorbent materials for hydrogen storage.
The molecular hydrogen adsorption was investigated on additional frameworks with earth alkaline metal atoms (Be, Mg and Ca) in 24T ERI zeolite cluster model by means of Density Functional Theory study. HOMO and LUMO energy values, chemical potential, chemical hardness, electronegativity, adsorption energy and adsorption enthalpy values have been calculated in this study. Mg-ERI and Ca-ERI clusters have much lower chemical potentials with much lower adsorption energy values when compared to the value of Be-ERI cluster. Additionally, they are softer than Be-ERI cluster with respect to their lower chemical hardness values. Hydrogen adsorption enthalpy values were computed as −3.6 and −3.9kJ/mol on Mg-ERI and Ca-ERI clusters, respectively. These adsorption enthalpy values are significantly larger than the enthalpy value of liquefaction for hydrogen molecule. This consequently specifies that Mg-ERI and Ca-ERI zeolite structures which have higher chemical reactivity appear to be a promising candidate cryoadsorbent for hydrogen storage.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.apsusc.2016.10.065</doi><tpages>7</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Adsorption Beryllium Clusters DFT Earth alkaline metals Enthalpy ERI zeolite Hardness Hydrogen adsorption Hydrogen storage Surface chemistry Zeolites |
| title | A DFT study of hydrogen adsorption on Be, Mg and Ca frameworks in erionite zeolite |
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