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Palumbo O, Trequattrini F, Hulyalkar M, Sarker S, Pal N, Chandra D, Flanagan T, Dolan M, Paolone A. Hydrogen Induced Abrupt Structural Expansion at High Temperatures of a Ni 32Nb 28Zr 30Cu 10 Membrane for H₂ Purification. MEMBRANES 2016; 6:E48. [PMID: 27879641 PMCID: PMC5192404 DOI: 10.3390/membranes6040048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 11/11/2016] [Accepted: 11/16/2016] [Indexed: 11/16/2022]
Abstract
Ni-Nb-Zr amorphous membranes, prepared by melt-spinning, show great potential for replacing crystalline Pd-based materials in the field of hydrogen purification to an ultrapure grade (>99.999%). In this study, we investigate the temperature evolution of the structure of an amorphous ribbon with the composition Ni32Nb28Zr30Cu10 (expressed in atom %) by means of XRD and DTA measurements. An abrupt structural expansion is induced between 240 and 300 °C by hydrogenation. This structural modification deeply modifies the hydrogen sorption properties of the membrane, which indeed shows a strong reduction of the hydrogen capacity above 270 °C.
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Affiliation(s)
- Oriele Palumbo
- Consiglio Nazionale delle Ricerche, Istituto del Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, Rome 00185, Italy.
| | - Francesco Trequattrini
- Consiglio Nazionale delle Ricerche, Istituto del Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, Rome 00185, Italy.
- Department of Physics, Sapienza University of Rome, Piazzale A. Moro 5, Rome 00185, Italy.
| | - Madhura Hulyalkar
- Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA.
| | - Suchismita Sarker
- 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.
| | - Ted Flanagan
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA.
| | - Michael Dolan
- Commonwealth Scientific and Industrial Research Organisation, Queensland Centre for Advanced Technologies, Energy, 1 Technology Court, Pullenvale 4069, Australia.
| | - Annalisa Paolone
- Consiglio Nazionale delle Ricerche, Istituto del Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, Rome 00185, Italy.
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Temperature Dependence of the Elastic Modulus of (Ni0.6Nb0.4)1−xZrx Membranes: Effects of Thermal Treatments and Hydrogenation. ENERGIES 2015. [DOI: 10.3390/en8053944] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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