Probing the reaction pathway of dehydrogenation of the LiNH<sub>2</sub> + LiH mixture using <i>in situ</i> H NMR spectroscopy期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

*Probing the reaction pathway of dehydrogenation of the LiNH₂ + LiH mixture using in situ* H NMR spectroscopy**

Authors:	Jian Zhi Hu Ja Hun Kwak Zhenguo Yang William Osborn Tippawan Markmaitree Leon L Shaw

Affiliation:	^aPacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352, USA ^bDepartment of Chemical, Materials and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA

Abstract:	Using variable temperature in situ ¹H NMR spectroscopy on a mixture of LiNH₂ + LiH that was mechanically activated using high-energy ball milling, the dehydrogenation of the LiNH₂ + LiH to Li₂NH + H₂ was investigated. The analysis indicates NH₃ release at a temperature as low as 30 °C and rapid reaction between NH₃ and LiH at 150 °C. The transition from NH₃ release to H₂ appearance accompanied by disappearance of NH₃ confirms unambiguously the two-step elementary reaction pathway proposed by other workers.

Keywords:	NMR Mechanical activation LiNH₂ LiH Hydrogen storage
本文献已被 ScienceDirect 等数据库收录！