Cryoadsorption of hydrogen on divalent cation-exchanged X-zeolites
The cryoadsorption of hydrogen on divalent cation-exchanged zeolites and its relation with exchanged ions is investigated by volume measurements performed at near critical temperatures of 140–35 K and pressures up to 7 MPa. The hydrogen uptakes of the zeolites follow an order of NaX > MgX > Zn...
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| Veröffentlicht in: | International journal of hydrogen energy 2009-07, Vol.34 (13), p.5458-5465 |
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| container_issue | 13 |
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| container_title | International journal of hydrogen energy |
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| creator | Li, Jing Wu, Erdong Song, Jiangwei Xiao, Fengshou Geng, Changjian |
| description | The cryoadsorption of hydrogen on divalent cation-exchanged zeolites and its relation with exchanged ions is investigated by volume measurements performed at near critical temperatures of 140–35
K and pressures up to 7
MPa. The hydrogen uptakes of the zeolites follow an order of NaX
>
MgX
>
ZnX
>
NiX, as same as that of the stability of the ions, but opposite to the hydration tendency of the ions and the isosteric heat of the adsorption of the zeolites, which indicate that the redox potential of the ions in the zeolite is a dominant factor in hydrogen adsorption. The drop of excess adsorption to negative amount and the following recovery at near critical temperature and pressure are explained by a reversed effect of capillary condensation and the bias of the compressibility factor from the assumed equation of state. |
| doi_str_mv | 10.1016/j.ijhydene.2009.04.047 |
| format | Article |
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K and pressures up to 7
MPa. The hydrogen uptakes of the zeolites follow an order of NaX
>
MgX
>
ZnX
>
NiX, as same as that of the stability of the ions, but opposite to the hydration tendency of the ions and the isosteric heat of the adsorption of the zeolites, which indicate that the redox potential of the ions in the zeolite is a dominant factor in hydrogen adsorption. The drop of excess adsorption to negative amount and the following recovery at near critical temperature and pressure are explained by a reversed effect of capillary condensation and the bias of the compressibility factor from the assumed equation of state.</description><identifier>ISSN: 0360-3199</identifier><identifier>EISSN: 1879-3487</identifier><identifier>DOI: 10.1016/j.ijhydene.2009.04.047</identifier><identifier>CODEN: IJHEDX</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Adsorption ; Alternative fuels. Production and utilization ; Applied sciences ; Cations ; Compressibility ; Critical temperature ; Electrode potentials ; Energy ; Exact sciences and technology ; Fuels ; Hydration ; Hydrogen ; Hydrogen adsorption ; Ion exchangers ; Ion-exchange ; X-zeolite ; Zeolites</subject><ispartof>International journal of hydrogen energy, 2009-07, Vol.34 (13), p.5458-5465</ispartof><rights>2009 International Association for Hydrogen Energy</rights><rights>2009 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-8946ee00cfb26a926e59fc039db589d3c8f0c3ca1277b39be8b76065365e9a3b3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0360319909005928$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21728363$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Jing</creatorcontrib><creatorcontrib>Wu, Erdong</creatorcontrib><creatorcontrib>Song, Jiangwei</creatorcontrib><creatorcontrib>Xiao, Fengshou</creatorcontrib><creatorcontrib>Geng, Changjian</creatorcontrib><title>Cryoadsorption of hydrogen on divalent cation-exchanged X-zeolites</title><title>International journal of hydrogen energy</title><description>The cryoadsorption of hydrogen on divalent cation-exchanged zeolites and its relation with exchanged ions is investigated by volume measurements performed at near critical temperatures of 140–35
K and pressures up to 7
MPa. The hydrogen uptakes of the zeolites follow an order of NaX
>
MgX
>
ZnX
>
NiX, as same as that of the stability of the ions, but opposite to the hydration tendency of the ions and the isosteric heat of the adsorption of the zeolites, which indicate that the redox potential of the ions in the zeolite is a dominant factor in hydrogen adsorption. The drop of excess adsorption to negative amount and the following recovery at near critical temperature and pressure are explained by a reversed effect of capillary condensation and the bias of the compressibility factor from the assumed equation of state.</description><subject>Adsorption</subject><subject>Alternative fuels. Production and utilization</subject><subject>Applied sciences</subject><subject>Cations</subject><subject>Compressibility</subject><subject>Critical temperature</subject><subject>Electrode potentials</subject><subject>Energy</subject><subject>Exact sciences and technology</subject><subject>Fuels</subject><subject>Hydration</subject><subject>Hydrogen</subject><subject>Hydrogen adsorption</subject><subject>Ion exchangers</subject><subject>Ion-exchange</subject><subject>X-zeolite</subject><subject>Zeolites</subject><issn>0360-3199</issn><issn>1879-3487</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqFUF1LwzAUDaLgnP4F6Yv41HrTtEnzpg6_YOCLgm8hTW-3jK6ZSTecv96MTV-FA_fCPR_cQ8glhYwC5TeLzC7m2wZ7zHIAmUERIY7IiFZCpqyoxDEZAeOQMirlKTkLYQFABRRyRO4nfut0E5xfDdb1iWuT6OXdDOPeJ43d6A77ITF6d07xy8x1P8Mm-Ui_0XV2wHBOTlrdBbw4zDF5f3x4mzyn09enl8ndNDVMFENayYIjApi2zrmWOcdStgaYbOqykg0zVQuGGU1zIWoma6xqwYGXjJcoNavZmFzvfVfefa4xDGppg8Gu0z26dVAylsFlnsvI5Hum8S4Ej61aebvUfqsoqF1naqF-O1O7zhQUESIKrw4ROhjdtV73xoY_dU5FXjHOIu92z8P478aiV8FY7A021qMZVOPsf1E_kz-GMA</recordid><startdate>20090701</startdate><enddate>20090701</enddate><creator>Li, Jing</creator><creator>Wu, Erdong</creator><creator>Song, Jiangwei</creator><creator>Xiao, Fengshou</creator><creator>Geng, Changjian</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20090701</creationdate><title>Cryoadsorption of hydrogen on divalent cation-exchanged X-zeolites</title><author>Li, Jing ; Wu, Erdong ; Song, Jiangwei ; Xiao, Fengshou ; Geng, Changjian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c374t-8946ee00cfb26a926e59fc039db589d3c8f0c3ca1277b39be8b76065365e9a3b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Adsorption</topic><topic>Alternative fuels. Production and utilization</topic><topic>Applied sciences</topic><topic>Cations</topic><topic>Compressibility</topic><topic>Critical temperature</topic><topic>Electrode potentials</topic><topic>Energy</topic><topic>Exact sciences and technology</topic><topic>Fuels</topic><topic>Hydration</topic><topic>Hydrogen</topic><topic>Hydrogen adsorption</topic><topic>Ion exchangers</topic><topic>Ion-exchange</topic><topic>X-zeolite</topic><topic>Zeolites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Jing</creatorcontrib><creatorcontrib>Wu, Erdong</creatorcontrib><creatorcontrib>Song, Jiangwei</creatorcontrib><creatorcontrib>Xiao, Fengshou</creatorcontrib><creatorcontrib>Geng, Changjian</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of hydrogen energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Jing</au><au>Wu, Erdong</au><au>Song, Jiangwei</au><au>Xiao, Fengshou</au><au>Geng, Changjian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cryoadsorption of hydrogen on divalent cation-exchanged X-zeolites</atitle><jtitle>International journal of hydrogen energy</jtitle><date>2009-07-01</date><risdate>2009</risdate><volume>34</volume><issue>13</issue><spage>5458</spage><epage>5465</epage><pages>5458-5465</pages><issn>0360-3199</issn><eissn>1879-3487</eissn><coden>IJHEDX</coden><abstract>The cryoadsorption of hydrogen on divalent cation-exchanged zeolites and its relation with exchanged ions is investigated by volume measurements performed at near critical temperatures of 140–35
K and pressures up to 7
MPa. The hydrogen uptakes of the zeolites follow an order of NaX
>
MgX
>
ZnX
>
NiX, as same as that of the stability of the ions, but opposite to the hydration tendency of the ions and the isosteric heat of the adsorption of the zeolites, which indicate that the redox potential of the ions in the zeolite is a dominant factor in hydrogen adsorption. The drop of excess adsorption to negative amount and the following recovery at near critical temperature and pressure are explained by a reversed effect of capillary condensation and the bias of the compressibility factor from the assumed equation of state.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijhydene.2009.04.047</doi><tpages>8</tpages></addata></record> |
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| ispartof | International journal of hydrogen energy, 2009-07, Vol.34 (13), p.5458-5465 |
| issn | 0360-3199 1879-3487 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Adsorption Alternative fuels. Production and utilization Applied sciences Cations Compressibility Critical temperature Electrode potentials Energy Exact sciences and technology Fuels Hydration Hydrogen Hydrogen adsorption Ion exchangers Ion-exchange X-zeolite Zeolites |
| title | Cryoadsorption of hydrogen on divalent cation-exchanged X-zeolites |
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