利用高剪切反应器强化固液 MgH2 水解反应中的氢进化过程

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Hongyun Qin, Zixu Dong, Rujun Yu, Xia Chen, Feng Song, Junheng Guo, Yun Jia, Qiang Fu
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引用次数: 0

摘要

反应器对于提高由传质控制的反应速率至关重要。固态氢化镁(MgH2)在储氢方面具有很大优势,但液固水解动力学较差,限制了其应用。为了提高水解效率,我们探索并使用了各种化学反应器。结果表明,混合方式会影响表面涂层行为。具体来说,较高的温度和混合强度可促进 MgH2 的水解。此外,诱导结晶可有效缓解涂层并加强水解,尤其是在高混合水平下。结果表明,晶体种子与形成的 MgH2 颗粒之间的传质距离在 MgH2 的水解过程中起着重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Intensifying Hydrogen Evolution in Solid–Liquid MgH2 Hydrolysis Reaction by a High Shear Reactor

Intensifying Hydrogen Evolution in Solid–Liquid MgH2 Hydrolysis Reaction by a High Shear Reactor

Intensifying Hydrogen Evolution in Solid–Liquid MgH2 Hydrolysis Reaction by a High Shear Reactor

The reactor is very critical to intensify the reaction rate controlled by mass transfer. Solid magnesium hydride (MgH2) shows great advantages in hydrogen storage; however, poor liquid–solid hydrolysis kinetics limit its application. Various chemical reactors were explored and are used to improve the hydrolysis efficiency. Results show that the mixing style could affect the surface coating behavior. Specifically, the higher temperature and mixing strength could promote the MgH2 hydrolysis. Furthermore, induced crystallization could effectively relieve coating and strengthen the hydrolysis, especially at the high mixing level. The result indicated that the mass transfer distance between crystal seed and formed MgH2 particles played an important role in MgH2 hydrolysis.

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来源期刊
Chemical Engineering & Technology
Chemical Engineering & Technology 工程技术-工程:化工
CiteScore
3.80
自引率
4.80%
发文量
315
审稿时长
5.5 months
期刊介绍: This is the journal for chemical engineers looking for first-hand information in all areas of chemical and process engineering. Chemical Engineering & Technology is: Competent with contributions written and refereed by outstanding professionals from around the world. Essential because it is an international forum for the exchange of ideas and experiences. Topical because its articles treat the very latest developments in the field.
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