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

Oriele Palumbo, Francesco Trequattrini, Suchismita Sarker, Madhura Hulyakar, Narendra Pal, Dhanesh Chandra, Michael Dolan and Annalisa Paolone
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Oriele Palumbo: Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Roma, Italy
Francesco Trequattrini: Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Roma, Italy
Suchismita Sarker: Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA
Madhura Hulyakar: Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA
Narendra Pal: Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA
Dhanesh Chandra: Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA
Michael Dolan: Commonwealth Scientific and Industrial Research Organisation, Queensland Centre for Advanced Technologies, Energy, 1 Technology Court, Pullenvale, QLD 4069, Australia
Annalisa Paolone: Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Roma, Italy

Challenges, 2017, vol. 8, issue 1, 1-12

Abstract: 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.

Keywords: amorphous membranes; hydrogen purification; hydrogen solubility; crystallization (search for similar items in EconPapers)
JEL-codes: A00 C00 Z00 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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