Synthesis of NaBH4 based on a solid-state reaction under Ar atmosphere

Synthesis of NaBH4 based on a solid-state reaction under Ar atmosphere
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Ar气氛下固相反应合成NaBH4

DOI:
10.1016/j.jallcom.2009.04.093
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发表时间:
2009-09
影响因子:
6.2
通讯作者:
Sun, Dalin
Sun, Dalin
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhang, Hanping;Zheng, Shiyou;Fang, Fang;Chen, Guorong;Sang, Ge;Sun, Dalin

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在氩气气氛下,采用固相反应成功地合成了硼氢化钠NaBH4。先将4nah - nabo2 - 2sio2三元混合物球磨压成球团,然后在480℃氩气下煅烧5h。当压力为30MPa时,nabh4的产率为32%。研究了加压压力对固相反应的影响;讨论了一种可行的反应途径以及所添加的sio2的作用。
Sodium borohydride, NaBH4, was successfully synthesized via solid-state reaction under Ar instead of H2atmosphere. A 4NaH–NaBO2–2SiO2ternary mixture was first ball-milled and pressed into pellet, and then calcined under Ar atmosphere at 480°C for 5h. NaBH4was obtained in 32% yield when the pressing pressure was up to 30MPa. The influence of the pressing pressure on the solid-state reaction was studied; a plausible reaction pathway and the role of the added SiO2were discussed.
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