Comprehensive Thermochemistry of W–H Bonding in the Metal Hydrides CpW(CO)2(IMes)H, [CpW(CO)2(IMes)H]•+, and [CpW(CO)2(IMes)(H)2]+. Influence of anN-Heterocyclic Carbene Ligand on Metal Hydride Bond Energies

2011 ◽  
Vol 133 (37) ◽  
pp. 14604-14613 ◽  
Author(s):  
John A. S. Roberts ◽  
Aaron M. Appel ◽  
Daniel L. DuBois ◽  
R. Morris Bullock
Keyword(s):  
Metal Hydride ◽  
Metal Hydrides ◽  
Bond Energies

The Thermodynamic Way of Assessing Reversible Metal Hydride Volume Expansion: Getting a Grip on Metal Hydride Formation Overpotential

2021 ◽  
Author(s):  
Roland Hermann Pawelke
Keyword(s):  
Volume Change ◽  
Metal Hydride ◽  
Volume Expansion ◽  
Storage Systems ◽  
Metal Hydrides ◽  
Ideal Gas ◽  
Relative Volume ◽  
Hydride Formation ◽  
Chemical Hydrogen Storage ◽  
Insight Into

<p>The relative volume change of reversible metal hydrides upon hydrogenation is determined by means of the van’t Hoff reaction entropy and STP ideal gas parameters. This method allows insight into the requirements to metal hydride formation, outlined by example of Ti-NaAlH<sub>4</sub>. This work presents a timeless perspective on the sorbent phase thermodynamics of reversible chemical hydrogen storage systems.</p>

scholarly journals Alkali Metal Hydride Complexes: Well-Defined Molecular Species of Saline Hydrides

2015 ◽  
Vol 68 (8) ◽  
pp. 1190 ◽  
Author(s):  
Lea Fohlmeister ◽  
Andreas Stasch
Keyword(s):  
Alkali Metal ◽  
Molecular Species ◽  
Metal Hydride ◽  
Alkali Metals ◽  
Metal Hydrides ◽  
Hydride Complexes ◽  
Ionic Solids ◽  
Hydride Elimination ◽  
Alkali Metal Hydride ◽  
Group 1

The first examples of well-defined alkali metal hydride complexes have been synthesised and characterised in recent years, and their properties and underlying principles for their generation and stabilisation are emerging. This article gives an account of the hydrides of the alkali metals (Group 1 metals) and selected ‘-ate’ complexes containing hydrides and alkali metals, and reviews the chemistry of well-defined alkali metal hydride complexes including their syntheses, structures, and characteristics. The properties of the alkali metal hydrides LiH, NaH, KH, RbH, and CsH are dominated by their ionic NaCl structure. Stable, soluble, and well-defined LiH and NaH complexes have been obtained by metathesis and β-hydride elimination reactions that require suitable ligands with some steric bulk and the ability to coordinate to several metal ions. These novel hydride complexes reward with higher reactivity and different properties compared with their parent ionic solids.

scholarly journals THEORETICAL INVESTIGATION OF SOLAR ENERGY HIGH TEMPERATURE HEAT STORAGE TECHNOLOGY BASED ON METAL HYDRIDES

2011 ◽  
Vol 19 (02) ◽  
pp. 149-158 ◽  
Author(s):  
XIANG-YU MENG ◽  
ZE-WEI BAO ◽  
FU-SHENG YANG ◽  
ZAO-XIAO ZHANG
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Metal Hydride ◽  
Performance Optimization ◽  
Storage System ◽  
Metal Hydrides ◽  
Energy System ◽  
Energy Storage System ◽  
Point Of View ◽  
Thermal Release

A solar energy storage system based on metal hydrides was proposed in this paper. The numerical simulation of processes of energy storage and thermal release were carried out. The dynamic behavior of heat and mass transfer in the metal hydride energy system were reported. Some factors which influence the whole system performance were discussed. The paper also made an economic analysis of the system, the results proved that the large amounts of metal hydride materials and the configurations of metal hydrides energy storage system involve a critical situation from an economical point of view. Then further analysis, particularly regarding the performance optimization and new plant arrangement of the metal hydrides energy storage system, has to be developed in order to attain the economical feasibility of the proposal.

scholarly journals Hydrogen storage in complex metal hydrides

2009 ◽  
Vol 74 (2) ◽  
pp. 183-196 ◽  
Author(s):  
Borislav Bogdanovic ◽  
Michael Felderhoff ◽  
Guido Streukens
Keyword(s):  
Fuel Cells ◽  
Solid State ◽  
Thermodynamic Properties ◽  
Hydrogen Storage ◽  
Sodium Borohydride ◽  
Metal Hydride ◽  
Metal Hydrides ◽  
Hydrogen Storage Materials ◽  
High Hydrogen ◽  
Complex Metal

Complex metal hydrides such as sodium aluminohydride (NaAlH4) and sodium borohydride (NaBH4) are solid-state hydrogen-storage materials with high hydrogen capacities. They can be used in combination with fuel cells as a hydrogen source thus enabling longer operation times compared with classical metal hydrides. The most important point for a wide application of these materials is the reversibility under moderate technical conditions. At present, only NaAlH4 has favorable thermodynamic properties and can be employed as a thermally reversible means of hydrogen storage. By contrast, NaBH4 is a typical non-reversible complex metal hydride; it reacts with water to produce hydrogen.

Vibrational Progressions in the Valence Ionizations of Transition Metal Hydrides:  Evaluation of Metal-Hydride Bonding and Vibrations in (η5-C5R5)Re(NO)(CO)H [R = H, CH3]

2002 ◽  
Vol 124 (7) ◽  
pp. 1417-1423 ◽  
Author(s):  
Dennis L. Lichtenberger ◽  
Nadine E. Gruhn ◽  
Anjana Rai-Chaudhuri ◽  
Sharon K. Renshaw ◽  
John A. Gladysz ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Hydride ◽  
Metal Hydrides ◽  
Transition Metal Hydrides

Photoemission and x-ray studies of metal hydrides and hydride formation at metal/hydride interfaces

1985 ◽  
Vol 55 (12) ◽  
pp. 1089-1091 ◽  
Author(s):  
R.A. Butera ◽  
E. Franz ◽  
J.J. Joyce ◽  
J.H. Weaver
Keyword(s):  
Metal Hydride ◽  
Metal Hydrides ◽  
X Ray ◽  
Hydride Formation
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