Franziska Habermann, Anneliese Wirth, Konrad Burkmann, Jakob Kraus, Bianca Störr, Hartmut Stöcker, Jürgen Seidel, Jens Kortus, Roman Gumeniuk, Klaus Bohmhammel and Florian Mertens
{"title":"Thermodynamic and kinetic study of the effect of LiCl and NaCl on the thermal dehydrogenation of Ca(AlH4)2†","authors":"Franziska Habermann, Anneliese Wirth, Konrad Burkmann, Jakob Kraus, Bianca Störr, Hartmut Stöcker, Jürgen Seidel, Jens Kortus, Roman Gumeniuk, Klaus Bohmhammel and Florian Mertens","doi":"10.1039/D4MR00140K","DOIUrl":null,"url":null,"abstract":"<p >The presented work sets out to investigate the dehydrogenation behaviour of Ca(AlH<small><sub>4</sub></small>)<small><sub>2</sub></small> + 2MCl (M = Li, Na) mixtures. In contrast to the by-product NaCl, which does not affect the decomposition of Ca(AlH<small><sub>4</sub></small>)<small><sub>2</sub></small>, LiCl influences its dehydrogenation onward from the formation of CaAlH<small><sub>5</sub></small>. Thermodynamic calculations were used to support and explain these findings as well as to investigate the potential of Ca(AlH<small><sub>4</sub></small>)<small><sub>2</sub></small> and CaAlH<small><sub>5</sub></small> for reversible hydrogen storage applications. For this purpose, their heat capacity functions and absolute entropies were determined in this study.</p>","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 603-615"},"PeriodicalIF":0.0000,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00140k?page=search","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"RSC Mechanochemistry","FirstCategoryId":"1085","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/mr/d4mr00140k","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The presented work sets out to investigate the dehydrogenation behaviour of Ca(AlH4)2 + 2MCl (M = Li, Na) mixtures. In contrast to the by-product NaCl, which does not affect the decomposition of Ca(AlH4)2, LiCl influences its dehydrogenation onward from the formation of CaAlH5. Thermodynamic calculations were used to support and explain these findings as well as to investigate the potential of Ca(AlH4)2 and CaAlH5 for reversible hydrogen storage applications. For this purpose, their heat capacity functions and absolute entropies were determined in this study.
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