Investigation of the Dehydrogenation Reaction Pathway of Ca(BH4)2 and Reversibility of Intermediate Phases
The dehydrogenation reaction pathway of Ca(BH4)2 has been investigated under an isobaric condition of 1 bar of hydrogen. β-Ca(BH4)2 gradually transforms into the (XRD invisible) amorphous phase at the initial stage. Upon further heating, it decomposes into CaB2H x or CaB12H12, indicating that there...
Gespeichert in:
| Veröffentlicht in: | Journal of physical chemistry. C 2012-02, Vol.116 (6), p.4330-4334 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 4334 |
|---|---|
| container_issue | 6 |
| container_start_page | 4330 |
| container_title | Journal of physical chemistry. C |
| container_volume | 116 |
| creator | Kim, Yoonyoung Hwang, Son-Jong Shim, Jae-Hyeok Lee, Young-Su Han, Heung Nam Cho, Young Whan |
| description | The dehydrogenation reaction pathway of Ca(BH4)2 has been investigated under an isobaric condition of 1 bar of hydrogen. β-Ca(BH4)2 gradually transforms into the (XRD invisible) amorphous phase at the initial stage. Upon further heating, it decomposes into CaB2H x or CaB12H12, indicating that there is a subtle competition between two different dehydrogenation routes: (i) Ca(BH4)2 → amorphous phase → CaB2H x + (4 – x)/2H2 → 2/3CaH2 + 1/3CaB6 + 10/3H2 and (ii) Ca(BH4)2 → amorphous phase → 1/6CaB12H12 + 5/6CaH2 + 13/6H2. It has also been concluded that CaB2H x as well as the CaB6 + CaH2 mixture can be rehydrogenated at 330 °C under 90 bar of hydrogen without any catalytic additive, whereas CaB12H12 hardly rehydrogenated under the same conditions. |
| doi_str_mv | 10.1021/jp210662a |
| format | Article |
| fullrecord | <record><control><sourceid>acs_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1021_jp210662a</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>b42939654</sourcerecordid><originalsourceid>FETCH-LOGICAL-a270t-a1fe645ab8a50c3b489b506752a852ed783a37595711892316f61a13c617af223</originalsourceid><addsrcrecordid>eNptkMtOwzAQRS0EEqWw4A-yQaKLgB-xnSyhPFqpEhWCdTRx7MZR61S2Kerfk7aobNjMXM2cudJchK4JviOYkvt2TQkWgsIJGpCC0VRmnJ8edSbP0UUILcacYcIGqJ26jQ7RLiDaziWdSWKjkyfdbGvfLbQ7jN81qL2YQ2y-YbvjxnD7OMlGNAFX98BG-2Aru7Rxv526qP1K1xaiTuYNBB0u0ZmBZdBXv32IPl-eP8aTdPb2Oh0_zFKgEscUiNEi41DlwLFiVZYXFcdCcgo5p7qWOQMmecElIXlBGRFGECBMCSLBUMqGaHTwVb4LwWtTrr1dgd-WBJe7kMpjSD17c2DXEBQsjQenbDgeUC5F0Zc_DlQo2-7Lu_6Df_x-AL0ocfY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Investigation of the Dehydrogenation Reaction Pathway of Ca(BH4)2 and Reversibility of Intermediate Phases</title><source>American Chemical Society Journals</source><creator>Kim, Yoonyoung ; Hwang, Son-Jong ; Shim, Jae-Hyeok ; Lee, Young-Su ; Han, Heung Nam ; Cho, Young Whan</creator><creatorcontrib>Kim, Yoonyoung ; Hwang, Son-Jong ; Shim, Jae-Hyeok ; Lee, Young-Su ; Han, Heung Nam ; Cho, Young Whan</creatorcontrib><description>The dehydrogenation reaction pathway of Ca(BH4)2 has been investigated under an isobaric condition of 1 bar of hydrogen. β-Ca(BH4)2 gradually transforms into the (XRD invisible) amorphous phase at the initial stage. Upon further heating, it decomposes into CaB2H x or CaB12H12, indicating that there is a subtle competition between two different dehydrogenation routes: (i) Ca(BH4)2 → amorphous phase → CaB2H x + (4 – x)/2H2 → 2/3CaH2 + 1/3CaB6 + 10/3H2 and (ii) Ca(BH4)2 → amorphous phase → 1/6CaB12H12 + 5/6CaH2 + 13/6H2. It has also been concluded that CaB2H x as well as the CaB6 + CaH2 mixture can be rehydrogenated at 330 °C under 90 bar of hydrogen without any catalytic additive, whereas CaB12H12 hardly rehydrogenated under the same conditions.</description><identifier>ISSN: 1932-7447</identifier><identifier>EISSN: 1932-7455</identifier><identifier>DOI: 10.1021/jp210662a</identifier><language>eng</language><publisher>Columbus, OH: American Chemical Society</publisher><subject>Condensed matter: structure, mechanical and thermal properties ; Equations of state, phase equilibria, and phase transitions ; Exact sciences and technology ; Physics ; Solubility, segregation, and mixing; phase separation</subject><ispartof>Journal of physical chemistry. C, 2012-02, Vol.116 (6), p.4330-4334</ispartof><rights>Copyright © 2012 American Chemical Society</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a270t-a1fe645ab8a50c3b489b506752a852ed783a37595711892316f61a13c617af223</citedby><cites>FETCH-LOGICAL-a270t-a1fe645ab8a50c3b489b506752a852ed783a37595711892316f61a13c617af223</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/jp210662a$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/jp210662a$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25769257$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kim, Yoonyoung</creatorcontrib><creatorcontrib>Hwang, Son-Jong</creatorcontrib><creatorcontrib>Shim, Jae-Hyeok</creatorcontrib><creatorcontrib>Lee, Young-Su</creatorcontrib><creatorcontrib>Han, Heung Nam</creatorcontrib><creatorcontrib>Cho, Young Whan</creatorcontrib><title>Investigation of the Dehydrogenation Reaction Pathway of Ca(BH4)2 and Reversibility of Intermediate Phases</title><title>Journal of physical chemistry. C</title><addtitle>J. Phys. Chem. C</addtitle><description>The dehydrogenation reaction pathway of Ca(BH4)2 has been investigated under an isobaric condition of 1 bar of hydrogen. β-Ca(BH4)2 gradually transforms into the (XRD invisible) amorphous phase at the initial stage. Upon further heating, it decomposes into CaB2H x or CaB12H12, indicating that there is a subtle competition between two different dehydrogenation routes: (i) Ca(BH4)2 → amorphous phase → CaB2H x + (4 – x)/2H2 → 2/3CaH2 + 1/3CaB6 + 10/3H2 and (ii) Ca(BH4)2 → amorphous phase → 1/6CaB12H12 + 5/6CaH2 + 13/6H2. It has also been concluded that CaB2H x as well as the CaB6 + CaH2 mixture can be rehydrogenated at 330 °C under 90 bar of hydrogen without any catalytic additive, whereas CaB12H12 hardly rehydrogenated under the same conditions.</description><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Equations of state, phase equilibria, and phase transitions</subject><subject>Exact sciences and technology</subject><subject>Physics</subject><subject>Solubility, segregation, and mixing; phase separation</subject><issn>1932-7447</issn><issn>1932-7455</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNptkMtOwzAQRS0EEqWw4A-yQaKLgB-xnSyhPFqpEhWCdTRx7MZR61S2Kerfk7aobNjMXM2cudJchK4JviOYkvt2TQkWgsIJGpCC0VRmnJ8edSbP0UUILcacYcIGqJ26jQ7RLiDaziWdSWKjkyfdbGvfLbQ7jN81qL2YQ2y-YbvjxnD7OMlGNAFX98BG-2Aru7Rxv526qP1K1xaiTuYNBB0u0ZmBZdBXv32IPl-eP8aTdPb2Oh0_zFKgEscUiNEi41DlwLFiVZYXFcdCcgo5p7qWOQMmecElIXlBGRFGECBMCSLBUMqGaHTwVb4LwWtTrr1dgd-WBJe7kMpjSD17c2DXEBQsjQenbDgeUC5F0Zc_DlQo2-7Lu_6Df_x-AL0ocfY</recordid><startdate>20120216</startdate><enddate>20120216</enddate><creator>Kim, Yoonyoung</creator><creator>Hwang, Son-Jong</creator><creator>Shim, Jae-Hyeok</creator><creator>Lee, Young-Su</creator><creator>Han, Heung Nam</creator><creator>Cho, Young Whan</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20120216</creationdate><title>Investigation of the Dehydrogenation Reaction Pathway of Ca(BH4)2 and Reversibility of Intermediate Phases</title><author>Kim, Yoonyoung ; Hwang, Son-Jong ; Shim, Jae-Hyeok ; Lee, Young-Su ; Han, Heung Nam ; Cho, Young Whan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a270t-a1fe645ab8a50c3b489b506752a852ed783a37595711892316f61a13c617af223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Equations of state, phase equilibria, and phase transitions</topic><topic>Exact sciences and technology</topic><topic>Physics</topic><topic>Solubility, segregation, and mixing; phase separation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Yoonyoung</creatorcontrib><creatorcontrib>Hwang, Son-Jong</creatorcontrib><creatorcontrib>Shim, Jae-Hyeok</creatorcontrib><creatorcontrib>Lee, Young-Su</creatorcontrib><creatorcontrib>Han, Heung Nam</creatorcontrib><creatorcontrib>Cho, Young Whan</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of physical chemistry. C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Yoonyoung</au><au>Hwang, Son-Jong</au><au>Shim, Jae-Hyeok</au><au>Lee, Young-Su</au><au>Han, Heung Nam</au><au>Cho, Young Whan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of the Dehydrogenation Reaction Pathway of Ca(BH4)2 and Reversibility of Intermediate Phases</atitle><jtitle>Journal of physical chemistry. C</jtitle><addtitle>J. Phys. Chem. C</addtitle><date>2012-02-16</date><risdate>2012</risdate><volume>116</volume><issue>6</issue><spage>4330</spage><epage>4334</epage><pages>4330-4334</pages><issn>1932-7447</issn><eissn>1932-7455</eissn><abstract>The dehydrogenation reaction pathway of Ca(BH4)2 has been investigated under an isobaric condition of 1 bar of hydrogen. β-Ca(BH4)2 gradually transforms into the (XRD invisible) amorphous phase at the initial stage. Upon further heating, it decomposes into CaB2H x or CaB12H12, indicating that there is a subtle competition between two different dehydrogenation routes: (i) Ca(BH4)2 → amorphous phase → CaB2H x + (4 – x)/2H2 → 2/3CaH2 + 1/3CaB6 + 10/3H2 and (ii) Ca(BH4)2 → amorphous phase → 1/6CaB12H12 + 5/6CaH2 + 13/6H2. It has also been concluded that CaB2H x as well as the CaB6 + CaH2 mixture can be rehydrogenated at 330 °C under 90 bar of hydrogen without any catalytic additive, whereas CaB12H12 hardly rehydrogenated under the same conditions.</abstract><cop>Columbus, OH</cop><pub>American Chemical Society</pub><doi>10.1021/jp210662a</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1932-7447 |
| ispartof | Journal of physical chemistry. C, 2012-02, Vol.116 (6), p.4330-4334 |
| issn | 1932-7447 1932-7455 |
| language | eng |
| recordid | cdi_crossref_primary_10_1021_jp210662a |
| source | American Chemical Society Journals |
| subjects | Condensed matter: structure, mechanical and thermal properties Equations of state, phase equilibria, and phase transitions Exact sciences and technology Physics Solubility, segregation, and mixing phase separation |
| title | Investigation of the Dehydrogenation Reaction Pathway of Ca(BH4)2 and Reversibility of Intermediate Phases |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-22T06%3A11%3A12IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-acs_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Investigation%20of%20the%20Dehydrogenation%20Reaction%20Pathway%20of%20Ca(BH4)2%20and%20Reversibility%20of%20Intermediate%20Phases&rft.jtitle=Journal%20of%20physical%20chemistry.%20C&rft.au=Kim,%20Yoonyoung&rft.date=2012-02-16&rft.volume=116&rft.issue=6&rft.spage=4330&rft.epage=4334&rft.pages=4330-4334&rft.issn=1932-7447&rft.eissn=1932-7455&rft_id=info:doi/10.1021/jp210662a&rft_dat=%3Cacs_cross%3Eb42939654%3C/acs_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |