Crystal structure and in situ decomposition of Eu(BH<inf>4</inf>)<inf>2</inf> and Sm(BH<inf>4</inf>)<inf>2</inf>
MetadataShow full item record
Synthesis of halide free rare earth metal (RE) borohydride complexes is demonstrated by the metathesis reaction of trivalent RE metal chlorides and LiBH<inf>4</inf> in ethereal solution, combined with solvent extraction using dimethyl sulfide. The crystal structures of Eu(BH<inf>4</inf>)<inf>2</inf> and Sm(BH<inf>4</inf>)<inf>2</inf> are orthorhombic (space group Pbcn) and are shown to be related to the structure of Sr(BH<inf>4</inf>)<inf>2</inf> by Rietveld refinement. Further, the thermal decomposition of these materials has been studied by in situ synchrotron radiation powder X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, mass spectrometry and Sieverts measurements. The decomposition pathway of these solvent extracted materials has been compared against materials prepared by mechano-chemistry, the process of which is simplified by the absence of chloride impurities. This journal is
Showing items related by title, author, creator and subject.
Synthesis, crystal structure, thermal decomposition, and <sup>11</sup>B MAS NMR characterization of Mg(BH<inf>4</inf>)<inf>2</inf>(NH<inf>3</inf>BH <inf>3</inf>)<inf>2</inf>Jepsen, L.; Ban, V.; Moller, Kasper; Lee, Y.; Cho, Y.; Besenbacher, F.; Filinchuk, Y.; Skibsted, J.; Jensen, T. (2014)A metal borohydride-ammonia borane complex, Mg(BH4) 2(NH3BH3)2 was synthesized via a solid-state reaction between Mg(BH4)2 and NH 3BH3. Different mechanochemical reaction mechanisms are observed, since Mg(BH4)2(NH3BH 3)2 ...
Color Point Tuning by Partial Ba<sup>2+</sup> Substitution of Ca <sup>2+</sup> in (Ca<inf>1-x</inf>Ba<inf>x</inf>)<inf>3</inf>(PO <inf>4</inf>)<inf>2</inf> Phosphor for White Light Emitting DiodesLi, Y.; Yu, H.; Deng, D.; Hua, Y.; Zhao, S.; Jia, Guohua; Wang, H.; Huang, L.; Li, Y.; Li, C.; Xu, S. (2013)A potential phosphor (Ca1-xBax)3(PO 4)2:Eu2+ was synthesized by a solid-state reaction. X-ray diffraction (XRD) analysis confirmed the formation of (Ca 1-xBax)3(PO4)2 crystal phase. With the Ba2+ content increasing, the ...
Reversibility of LiBH<inf>4</inf> Facilitated by the LiBH<inf>4</inf>-Ca(BH<inf>4</inf>)<inf>2</inf> EutecticJavadian, P.; Gharibdoust, S.; Li, H.; Sheppard, Drew; Buckley, C.; Jensen, T. (2017)© 2017 American Chemical Society. The hydrogen storage properties of eutectic melting 0.68LiBH 4 -0.32Ca(BH 4 ) 2 (LiCa) as bulk and nanoconfined into a high surface area, S BET = 2421 ± 189 m 2 /g, carbon aerogel ...