Next Article in Journal / Special Issue
Ionic Mobility and Phase Transitions in Perovskite Oxides for Energy Application
Previous Article in Journal / Special Issue
Ice XVII as a Novel Material for Hydrogen Storage
Article Menu

Export Article

Open AccessArticle
Challenges 2017, 8(1), 4;

New Studies of the Physical Properties of Metallic Amorphous Membranes for Hydrogen Purification

Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Roma, Italy
Department of Physics, Sapienza University of Rome, Piazzale A. Moro 5, 00185 Roma, Italy
Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA
Commonwealth Scientific and Industrial Research Organisation, Queensland Centre for Advanced Technologies, Energy, 1 Technology Court, Pullenvale, QLD 4069, Australia
Author to whom correspondence should be addressed.
Academic Editor: Palmiro Poltronieri
Received: 22 December 2016 / Revised: 6 February 2017 / Accepted: 7 February 2017 / Published: 10 February 2017
(This article belongs to the Special Issue Selected papers from Thematic Meeting “Materials for Energy”)
Full-Text   |   PDF [2895 KB, uploaded 10 February 2017]   |  


Amorphous metallic membranes display promising properties for hydrogen purification up to an ultrapure grade (purity > 99.999%). The hydrogen permeability through amorphous membranes has been widely studied in the literature. In this work we focus on two additional properties, which should be considered before possible application of such materials: the propensity to crystallize at high temperatures should be avoided, as the crystallized membranes can become brittle; the hydrogen solubility should be high, as solubility and permeability are proportional. We investigate the crystallization process and the hydrogen solubility of some membranes based on Ni, Nb, and Zr metals, as a function of Zr content, and with the addition of Ta or B. The boron doping does not significantly affect the crystallization temperature and the thermal stability of the membrane. However, the hydrogen solubility for p ~7 bar is as high as H/M ~0.31 at T = 440 °C and H/M ~0.27 at T = 485 °C. Moreover, the membrane does not pulverize even after repeated thermal cycles and hydrogenation processes up to 485 °C and 7 bar, and it retains its initial shape. View Full-Text
Keywords: amorphous membranes; hydrogen purification; hydrogen solubility; crystallization amorphous membranes; hydrogen purification; hydrogen solubility; crystallization

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Palumbo, O.; Trequattrini, F.; Sarker, S.; Hulyakar, M.; Pal, N.; Chandra, D.; Dolan, M.; Paolone, A. New Studies of the Physical Properties of Metallic Amorphous Membranes for Hydrogen Purification. Challenges 2017, 8, 4.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Challenges EISSN 2078-1547 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top