scholarly journals The Effect of Graphite and Fe2O3 Addition on Hydrolysis Kinetics of Mg-Based Hydrogen Storage Materials

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Kun Yang ◽  
Hongyun Qin ◽  
Junnan Lv ◽  
Rujun Yu ◽  
Xia Chen ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Conversion Rate ◽  
Composite Powder ◽  
Physical Structure ◽  
Hydrogen Release ◽  
Hydrolysis Kinetics ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Kinetics Of ◽  
Hydrolysis Of

In this paper, graphite and Fe2O3 are introduced into MgH2 powder by the method of hydrogenation after magnetic grinding. Hydrogen storage materials which composite of MgH2–5 wt.% C and MgH2–5 wt.% C–5 wt.% Fe2O3 are successfully prepared. The physical structure of these materials was analyzed and characterized by XRD, SEM, etc. Furthermore, the influence of graphite and Fe2O3 on the hydrolysis of MgH2 was systematically investigated. The results show that MgH2–C–Fe2O3 composite powder has the fastest hydrogen release rate in municipal drinking water and the highest conversion rate. Graphite and Fe2O3 can effectively reduce the activation energy of the hydrolysis reaction of MgH2 and improve the hydrolysis kinetics of MgH2. The synergistic effect of the coaddition of graphite and Fe2O3 can significantly increase the hydrolysis conversion rate of MgH2 and improve the hydrolysis kinetics.

The hydrolysis of ammonia borane catalyzed by NiCoP/OPC-300 nanocatalysts: high selectivity and efficiency, and mechanism

2019 ◽  
Vol 21 (4) ◽  
pp. 850-860 ◽  
Author(s):  
Xiaopeng Qu ◽  
Rui Jiang ◽  
Qian Li ◽  
Fanan Zeng ◽  
Xue Zheng ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
High Selectivity ◽  
Clean Energy ◽  
Ammonia Borane ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Highly Efficient ◽  
Energy Economy ◽  
Chemical Hydrogen Storage ◽  
Hydrolysis Of

The development of highly efficient and cheap catalysts for the release of hydrogen from chemical hydrogen-storage materials is indispensable for the coming clean energy economy.

scholarly journals Catalytic Tuning of Sorption Kinetics of Lightweight Hydrides: A Review of the Materials and Mechanism

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 651 ◽  
Author(s):  
Ankur Jain ◽  
Shivani Agarwal ◽  
Takayuki Ichikawa
Keyword(s):  
Hydrogen Storage ◽  
Activation Barrier ◽  
Sorption Kinetics ◽  
Kinetic Properties ◽  
Intermediate Step ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Complex Hydrides ◽  
The Us ◽  
Kinetics Of

Hydrogen storage materials have been a subject of intensive research during the last 4 decades. Several developments have been achieved in regard of finding suitable materials as per the US-DOE targets. While the lightweight metal hydrides and complex hydrides meet the targeted hydrogen capacity, these possess difficulties of hard thermodynamics and sluggish kinetics of hydrogen sorption. A number of methods have been explored to tune the thermodynamic and kinetic properties of these materials. The thermodynamic constraints could be resolved using an intermediate step of alloying or by making reactive composites with other hydrogen storage materials, whereas the sluggish kinetics could be improved using several approaches such as downsizing and the use of catalysts. The catalyst addition reduces the activation barrier and enhances the sorption rate of hydrogen absorption/desorption. In this review, the catalytic modifications of lightweight hydrogen storage materials are reported and the mechanism towards the improvement is discussed.

Metallic Ni nanocatalyst in situ formed from a metal–organic-framework by mechanochemical reaction for hydrogen storage in magnesium

2015 ◽  
Vol 3 (16) ◽  
pp. 8294-8299 ◽  
Author(s):  
Yi Jia ◽  
Chenghua Sun ◽  
Ye Peng ◽  
Wenqi Fang ◽  
Xuecheng Yan ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Metal Organic Framework ◽  
Mechanochemical Reaction ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Metal Organic ◽  
Kinetics Of ◽  
Organic Framework

The facile and scalable fabrication of ultrafine (<5 nm) nanoparticles (NPs) as effective catalysts is the key for enhancing the kinetics of most hydrogen storage materials (HSMs).

Enhancement of Ti-Cr-V BCC alloys on the dehydrogenation kinetics of Li-Mg-N-H hydrogen storage materials

Rare Metals ◽  
2010 ◽  
Vol 29 (6) ◽  
pp. 621-624 ◽  
Author(s):  
Jingchuan Wang ◽  
Zhinian Li ◽  
Hualing Li ◽  
Jing Mi ◽  
Fang Lü ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Dehydrogenation Kinetics ◽  
Kinetics Of

B-Methyl Amine Borane Derivatives: Synthesis, Characterization, and Hydrogen Release

2014 ◽  
Vol 67 (3) ◽  
pp. 521 ◽  
Author(s):  
Patrick G. Campbell ◽  
Jacob S. A. Ishibashi ◽  
Lev N. Zakharov ◽  
Shih-Yuan Liu
Keyword(s):  
Hydrogen Storage ◽  
Formic Acid ◽  
Hydrogen Release ◽  
Spent Fuel ◽  
Hydrogen Storage Materials ◽  
Step Process ◽  
Storage Materials ◽  
Methyl Amine ◽  
Fuel Material

We describe the synthesis of MeH2N–BH2Me (3) and H3N–BH2Me (4) as potential hydrogen storage materials with 6.8 wt-% and 8.9 wt-% capacity, respectively. Compounds 3 and 4 readily release 2 equivalents of H2 at 80°C in the presence of a CoCl2 catalyst to furnish the corresponding trimerized borazine derivatives. Regeneration of 3 from its spent fuel material can be accomplished using a simple two-step process: activation with formic acid followed by reduction with LiAlH4.

Blending materials composed of boron, nitrogen and carbon to transform approaches to liquid hydrogen stores

2016 ◽  
Vol 45 (14) ◽  
pp. 6196-6203 ◽  
Author(s):  
Sean M. Whittemore ◽  
Mark Bowden ◽  
Abhijeet Karkamkar ◽  
Kshitij Parab ◽  
Doinita Neiner ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Hydrogen Storage ◽  
Liquid Hydrogen ◽  
Hydrogen Release ◽  
Thermally Stable ◽  
Hydrogen Storage Materials ◽  
Fuel Blend ◽  
Storage Density ◽  
Storage Materials ◽  
Boron Nitrogen

Mixtures of hydrogen storage materials are examined to find a ‘fuel blend’ that remains a liquid phase throughout hydrogen release, maximizes hydrogen storage density, minimizes impurities and is thermally stable.

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