Hydrogen Absorption Kinetics of the Transition-Metal-Chloride-Enhanced NaAlH4 System

2012 ◽  
Vol 116 (27) ◽  
pp. 14205-14217 ◽  
Author(s):  
Mark P. Pitt ◽  
Per E. Vullum ◽  
Magnus H. Sørby ◽  
Hermann Emerich ◽  
Mark Paskevicius ◽  
...  
2007 ◽  
Vol 561-565 ◽  
pp. 1605-1608
Author(s):  
Aep Patah ◽  
Akito Takasaki ◽  
Janusz S. Szmyd

The kinetics of hydrogen reaction (absorption and desorption) on the MgH2 have been reported to be improved significantly by addition of transition metal oxides as catalysts. Among the oxides reported previously, Cr2O3 seems to improve hydrogen absorption kinetics and Nb2O5 for desorption kinetics. The catalytic effect of addition of more than one oxide, however, has not been reported yet. We investigated the hydrogen reaction kinetics of ball milled MgH2 powders added with either Cr2O3 or ZnO together with Nb2O5. In absorption reaction, the hydrogen contents reached 6 wt% and 5.3 wt% in 5 min for the powders added with 1 mol% ZnO + 1 mol% Nb2O5 and with 1 mol% Cr2O3 + 1 mol% Nb2O5, respectively. Those powders desorbed hydrogen up to about 4.5 wt% in 20 min. The significant improvement was not expected if one of the oxides was added separately. The combination of two kinds of oxides might play an important role for improvement of reaction kinetics.


2021 ◽  
Vol 50 (35) ◽  
pp. 12088-12092
Author(s):  
Clare A. Leahy ◽  
Michael J. Drummond ◽  
Josh Vura-Weis ◽  
Alison R. Fout

Hydrogen bonding networks are vital for metallo-enzymes to function; however, modeling these systems is non-trivial. The development of 1st-row transition metal chloride complexes with intramolecular hydrogen-bonding interactions are detailed herein.


Fuel ◽  
2020 ◽  
Vol 264 ◽  
pp. 116796 ◽  
Author(s):  
Bo Tan ◽  
Hongyi Wei ◽  
Bin Xu ◽  
Hongru Zhao ◽  
Zhuangzhuang Shao

2014 ◽  
Vol 39 (10) ◽  
pp. 5030-5036 ◽  
Author(s):  
Claudio Pistidda ◽  
Daphiny Pottmaier ◽  
Fahim Karimi ◽  
Sebastiano Garroni ◽  
Agnieszka Rzeszutek ◽  
...  

2012 ◽  
Vol 112 (1) ◽  
pp. 5-10 ◽  
Author(s):  
Sanjay Kumar ◽  
Manju Taxak ◽  
Nagaiyar Krishnamurthy

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