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Improvement on hydrogen generation properties of Zr(BH4)4·8NH3
Progress in Natural Science: Materials International ( IF 4.8 ) Pub Date : 2020-11-27 , DOI: 10.1016/j.pnsc.2020.10.009
D.F. Wu , L.Z. Ouyang , J.M. Huang , J.W. Liu , H. Wang , X.S. Yang , H. Shao , M. Zhu

Hydrolysis of Zr(BH4)4·8NH3 in deionized water can generate high purity hydrogen at room temperature. However, the sluggish hydrolysis kinetics of Zr(BH4)4·8NH3 hinders its practical use. To improve its hydrogen generation properties, the effects of magnetic stirring, changing hydrolysis solution and tuning the ammonia coordination number on the hydrolysis properties of Zr(BH4)4·8NH3 were investigated. Results show that both changing hydrolysis solution and tuning the ammonia coordination number can enhance the hydrolysis kinetics. The hydrolysis kinetics properties of Zr(BH4)4·8NH3 were significantly improved in MgCl2 and CoCl2 solutions. The Zr(BH4)4·xNH3 (x ≤ 8) samples were synthesized by a ball-milling method with different ammonization time (10, 60 and 180 min). Both the hydrolysis kinetics and hydrogen yield of Zr(BH4)4·xNH3 (x ≤ 8) were enhanced as the ammonia coordination number (x) decreased. Thus, tuning ammonia coordination number is an effective way to control the hydrolysis properties of Zr(BH4)4·xNH3 (x ≤ 8).



中文翻译:

Zr(BH 44 ·8NH 3的产氢性能改进

Zr(BH 44 ·8NH 3在去离子水中的水解可在室温下产生高纯度的氢气。然而,Zr(BH 44 ·8NH 3的缓慢的水解动力学阻碍了其实际应用。为了提高其产氢性能,研究了磁力搅拌,改变水解溶液和调节氨配位数对Zr(BH 44 ·8NH 3水解性能的影响。结果表明,改变水解溶液和调节氨配位数均可提高水解动力学。Zr(BH 4)的水解动力学性质在MgCl 2和CoCl 2溶液中4 ·8NH 3显着改善。Zr(BH 44 ·xNH 3(x≤8 )样品是通过球磨法在不同的氨化时间(10、60和180分钟)下合成的。Zr(BH 44 ·xNH 3(x≤8 )的水解动力学和氢产率均随着氨配位数(x)的降低而提高。因此,调节氨配位数是控制Zr(BH 44 ·xNH 3(x≤8 )水解性能的有效方法。

更新日期:2020-11-27
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