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A Homogeneous Metal Oxide Catalyst Enhanced Solid–Solid Reaction in the Hydrogen Desorption of a Lithium–Hydrogen–Nitrogen System
Author(s) -
Zhang Tengfei,
Isobe Shigehito,
Wang Yongming,
Hashimoto Naoyuki,
Ohnuki Somei
Publication year - 2014
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201301068
Subject(s) - catalysis , dehydrogenation , desorption , thermogravimetry , x ray photoelectron spectroscopy , hydrogen , chemistry , hydrogen storage , analytical chemistry (journal) , lithium (medication) , metal , mass spectrometry , oxide , thermal desorption , inorganic chemistry , chemical engineering , organic chemistry , adsorption , medicine , chromatography , engineering , endocrinology
In this study, LiTi 2 O 4 was synthesized as a possible catalyst in the Li‐N‐H system. The properties of hydrogen desorption in the Li‐N‐H system with a homogeneous catalyst have been investigated. The X‐ray diffraction and X‐ray photoelectron spectroscopy results indicated that the single phase of LiTi 2 O 4 was successfully synthesized and it was stable in the sample after high energy ball‐milling and heat treatment. LiTi 2 O 4 exhibited a catalytic effect in the Li‐N‐H system according to the thermogravimetry differential thermal analysis results. During dehydrogenation, a storage capacity of 5.7 wt % was obtained under moderate temperature. A sharp peak of thermal gas desorption mass spectrometry curve occurred at 227 °C. Furthermore, the catalytic mechanism of LiTi 2 O 4 in the Li‐N‐H system was discussed in accordance with the experimental results.