In situ solid state 11B MAS-NMR studies of the thermal decomposition of ammonia borane: mechanistic studies of the hydrogen release pathways from a solid state hydrogen storage material

2007 ◽  
Vol 9 (15) ◽  
pp. 1831 ◽  
Author(s):  
Ashley C. Stowe ◽  
Wendy J. Shaw ◽  
John C. Linehan ◽  
Benjamin Schmid ◽  
Tom Autrey
Keyword(s):  
Thermal Decomposition ◽  
Solid State ◽  
Hydrogen Storage ◽  
Mas Nmr ◽  
Hydrogen Release ◽  
Mechanistic Studies ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Nmr Studies

Effects of Ce-Based Dopants on the Hydrogen Storage Material of NaAlH4

2012 ◽  
Vol 1441 ◽  
Author(s):  
Jianjiang Hu ◽  
Raiker Witter ◽  
Shuhua Ren ◽  
Maximilian Fichtner
Keyword(s):  
Hydrogen Storage ◽  
Sorption Properties ◽  
Desorption Kinetics ◽  
Chemical Forms ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Hydrogen Capacity ◽  
Heating Treatment ◽  
Up Scaling

ABSTRACTCerium in various chemical forms was introduced into NaAlH4 to study the hydrogen sorption properties of the resulted material. Although all the Ce precursors tested in this work resulted in a reversible hydrogen storage material, an immediate enhancement in the desorption kinetics could be achieved by a heating treatment, resulting in the in situ formation of cerium aluminide (CeAl4) in the material. While the use of CeAl4 instead of CeCl3 can increase the hydrogen capacity by bypassing the formation of the ineffective NaCl, the highest capacity of 4.9 wt% was obtained from NaAlH4 doped directly with commercial metallic cerium, which may provide a much simplified process for a possible up-scaling preparation of this hydrogen storage material.

scholarly journals In-Situ TEM Observation for Reaction Mechanism in MgH2 Hydrogen Storage Material

2010 ◽  
Vol 74 (3) ◽  
pp. 205-208 ◽  
Author(s):  
Akifumi Ono ◽  
Shigehito Isobe ◽  
Yongming Wang ◽  
Naoyuki Hashimoto ◽  
Somei Ohnuki
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Storage ◽  
In Situ Tem ◽  
Hydrogen Storage Material ◽  
Storage Material

Mechanistic insights into the thermal decomposition of ammonia borane, a material studied for chemical hydrogen storage

2021 ◽  
Vol 8 (7) ◽  
pp. 1900-1930
Author(s):  
Umit B. Demirci
Keyword(s):  
Thermal Decomposition ◽  
Hydrogen Storage ◽  
Ammonia Borane ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Chemical Hydrogen Storage

We have now a better understanding of the mechanisms of thermal decomposition of ammonia borane, a widely studied hydrogen storage material.

scholarly journals Formation of CaB6 in the thermal decomposition of the hydrogen storage material Ca(BH4)2

2016 ◽  
Vol 18 (29) ◽  
pp. 19866-19872 ◽  
Author(s):  
Christoph J. Sahle ◽  
Christian Sternemann ◽  
Carlotta Giacobbe ◽  
Yigang Yan ◽  
Christopher Weis ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
High Resolution ◽  
Raman Scattering ◽  
Hydrogen Storage ◽  
Powder Diffraction ◽  
Reaction Products ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Raman Scattering Spectroscopy ◽  
X Ray

Using a combination of high resolution X-ray powder diffraction and X-ray Raman scattering spectroscopy at the B K- and Ca L2,3-edges, we analyzed the reaction products of Ca(BH4)2 after annealing at 350 °C and 400 °C under vacuum conditions.

scholarly journals Solid-State High-Resolution1H-NMR Study for Ammonia Borane of Hydrogen Storage Material

2010 ◽  
Vol 14 (1) ◽  
pp. 38-44 ◽  
Author(s):  
J.H. Han ◽  
Cheol-Eui Lee ◽  
Se-Hun Kim ◽  
Chang-Sam Kim ◽  
Doug-Young Han
Keyword(s):  
Solid State ◽  
Hydrogen Storage ◽  
Ammonia Borane ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Nmr Study

In Situ Hydrogenation and Desulfurization of CS2 by Mg-Based Hydrogen Storage Material:Products and Mechanism Analysis

2013 ◽  
Vol 726-731 ◽  
pp. 668-672
Author(s):  
Tong Huan Zhang ◽  
Min Jian Yang ◽  
Peng Bo Li ◽  
Wei Xian Ran ◽  
Qian Qian Zhang ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Ball Milling ◽  
Hydrogen Desorption ◽  
Mechanism Analysis ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Coupling Relationship ◽  
Negative Effect ◽  
Sulfur Fixation

Mg-based hydrogen storage material was prepared by ball milling, and then the material was used to react with CS2. The morphology and hydrogen desorption properties of the hydrogen storage material as well as the CS2hydrogenation product were analyzed. Results show that in situ hydrogenation and desulfurization of CS2happens with the MgH2in the hydrogen storage material as hydrogen donator and desulfurizer at 300 °C and ordinary pressure, and MgS, CH4and H2S are generated from the reaction. There is a coupling relationship between dehydrogenation of the hydrogen storage material and hydrogenation of CS2. The addition of nickel and molybdenum show negative effect on the sulfur fixation capability of the Mg-based hydrogen storage material though they could decrease the dehydrogenation temperature of the material.

scholarly journals Active catalytic species generated in situ in zirconia incorporated hydrogen storage material magnesium hydride

2021 ◽  
Author(s):  
D. Pukazhselvan ◽  
K.S. Sandhya ◽  
Devaraj Ramasamy ◽  
Aliaksandr Shaula ◽  
Igor Bdikin ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Magnesium Hydride ◽  
Hydrogen Storage Material ◽  
Storage Material
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