Title

Hydrogen Storage With Hetero Porphyrin Aggregates

Keywords

Hydrogen storage; Solid state hetero porphyrin aggregate

Abstract

Hydrogen interaction of porphyrin hetero-pairs has been studied by differential scanning calorimetry (DSC). Aggregates were prepared by spontaneous aggregation of water soluble anionic porphyrins meso-tetra(4-carboxyphenyl) porphine (TCPP) and meso-tetra(4-sulfonatophenyl)porphine (TPPS) with cationic meso-tetra-p-trimethylaminophenyl porphine tetrachloride (TAP). Aggregate formation in solution was investigated via UV-visible spectroscopy at different pH ranges. At neutral to basic conditions, porphyrin pairs formed partially soluble hetero H-aggregates and at low pH, soluble homo J-aggregates was formed. H-aggregates were isolated by centrifuging and freeze-drying. The obtained solids were studied by X-ray powder diffraction. Thermal stability of dry aggregates was determined by thermogravimetric analysis. The TCPP-TAP hetero aggregates exhibited hydrogen uptake between 80 °C and 250 °C. The amount of hydrogen absorbed by the sample corresponds to 0.29% by weight, indicating a potential use of such materials as a solid state hydrogen storage medium. Copyright © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Publication Date

5-1-2011

Publication Title

International Journal of Hydrogen Energy

Volume

36

Issue

11

Number of Pages

6705-6710

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ijhydene.2011.02.065

Socpus ID

79955701449 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79955701449

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