Thermochemical transformation and reversible performance of Mg(NH2)2–NaMgH3 system
Thermochemical transformation and reversible performance of Mg(NH2)2–NaMgH3 system
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Mg(NH2)2—NaMgH3体系的热化学转化及可逆性能
DOI:
10.1016/j.ijhydene.2020.06.094
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发表时间:
2020-07
影响因子:
7.2
通讯作者:
Ping Chen
中科院分区:
文献类型:
--
作者:
Zhao Zhang;Hujun Cao;Weijin Zhang;Jirong Cui;Zhitao Xiong;Ping Chen
Reversible hydrogen uptake of Mg(NH2)2–MgH2system has been achieved by the introduction of Na for the first time. The thermochemical and mechanochemical transformations of Mg(NH2)2-xNaMgH3(x = 0.5, 1 and 2) composites have been investigated through structural characterizations and gas desorption analyses. The hydrogenation property and reaction mechanism of Mg(NH2)2–NaMgH3have been discussed. Experimental results indicate that the replacement of NaMgH3for MgH2can extensively suppress ammonia emission and improve the hydrogen desorption property of Mg(NH2)2–MgH2system. For Mg(NH2)2–NaMgH3system, its thermochemical reaction at low temperature is quite similar to the reaction under mechanochemical process. At high temperature (190 °C), the formation of NaMg(NH2)(NH) is detected. The introduction of Na alters the reaction route and enhances the reaction enthalpy of Mg(NH2)2–MgH2system. The compound of NaMg(NH2)(NH) is synthesized by the reaction of MgNH and NaNH2and it can reversibly store 1.8 wt% of hydrogen at 10 atm and 190 °C. The reversible cycling between NaMg(NH2)(NH) and Mg(NH2)2is responsible for the partial reversible hydrogenation of Mg(NH2)2–NaMgH3system.
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影响因子:
4.9
作者:
Hujun Cao;A. Santoru;C. Pistidda;Theresia M. M. Richter-Theresia-M.-M.-Richter-13076616;A. Chaudhary;G. Gizer;R. Niewa;Ping Chen;T. Klassen;M. Dornheim
通讯作者:
Hujun Cao;A. Santoru;C. Pistidda;Theresia M. M. Richter-Theresia-M.-M.-Richter-13076616;A. Chaudhary;G. Gizer;R. Niewa;Ping Chen;T. Klassen;M. Dornheim
影响因子:
9.4
作者:
Boesenberg, U.;Kim, J. W.;Dornheim, M.
通讯作者:
Dornheim, M.
影响因子:
9.4
作者:
Boesenberg, Ulrike;Doppiu, Stefania;Bormann, Ruediger
通讯作者:
Bormann, Ruediger
影响因子:
7.2
作者:
Yartys, V. A.;Lototskyy, M. V.;Zhu, Min
通讯作者:
Zhu, Min
影响因子:
6.2
作者:
Jun Yang;A. Sudik;C. Wolverton
通讯作者:
Jun Yang;A. Sudik;C. Wolverton