Hydrogen Storage Capacity and Thermodynamic Calculations of Mercury(II) and Palladium(II) Syn‐2‐Pyridine Aldoxime Complexes

Four palladium(II) and mercury(II) complexes of the type [MCl2(HPAO)] or [M(PAO)2](HPAO = syn‐2‐pyridine aldoxime) are prepared and characterized using FTIR, 1H NMR spectra, molar conductivity, and melting point. The results demonstrated that a chelating bidentate behavior of APO through the indo an...

Full description

Saved in:
Bibliographic Details
Published in:Macromolecular symposia. 2022-02, Vol.401 (1), p.n/a
Main Authors: Al‐Isawi, Abdulsalam A., Al‐Jibori, Subhi A., Al‐Janabi, Ahmed S. M., Alheety, Mustafa A.
Format: Article
Language:English
Subjects:
Chelation
complexes
Hydrogen
Hydrogen storage
Mathematical analysis
Melting points
Mercury
Mercury compounds
Nitrogen atoms
NMR
Nuclear magnetic resonance
Palladium
pyridine aldoxime
Pyridines
Storage capacity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Four palladium(II) and mercury(II) complexes of the type [MCl2(HPAO)] or [M(PAO)2](HPAO = syn‐2‐pyridine aldoxime) are prepared and characterized using FTIR, 1H NMR spectra, molar conductivity, and melting point. The results demonstrated that a chelating bidentate behavior of APO through the indo and exocyclic nitrogen atoms. The applicability of the prepared complexes in hydrogen storage at a temperature of 77 K and a pressure of 100 bar is studied. The results show that the complexes are capable of storing hydrogen as follows: 1.54, 2.3, 0.53, and 0.63 wt.% of H2 for [Hg(HAPO)Cl2] (1), [Pd(HAPO)Cl2] (2), [Hg(APO)2] (3), and [Pd(APO)2] (4), respectively. Thermodynamic calculations show that the storage type of hydrogen is the physico‐absorption type. The study shows that the central metal has an effect on the ability of the complex to store hydrogen, as the palladium complexes are more capable of storing hydrogen than their mercury counterparts.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.202100388