Kim, Jung Hyun Kang, Sarng Woo Nah, In Wook Oh, In-Hwan 2024-01-20T05:31:16Z 2024-01-20T05:31:16Z 2021-09-03 2015-12-07 0360-3199 https://pubs.kist.re.kr/handle/201004/124634 Fe-modified zeolite was prepared by ion-exchange of zeolite with ferric chloride and calcination, for effective spin conversion of ortho- to-para-hydrogen. Studies carried out using BET, SEM, EDS, and VSM techniques. Results indicated that spin conversion rate showed great dependence on magnetic properties of the composite according to calcination temperature change. For lower sintering temperatures, the samples showed more paramagnetic behavior. As sintering temperature increased, ferromagnetic state increase, while paramagnetic states decreased. The highest spin conversion was observed at paramagnetic state, comparing with ferromagnetic, at lower calcination temperature. Moreover, Fe-modified zeolite showed a superior hydrodynamic property such as the pressure drop ratio of composite to a commercial iron oxide. These composites can be applied in more efficient hydrogen liquefaction processes. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD CATALYST Synthesis and characterization of Fe-modified zeolite for spin conversion of hydrogen at cryogenic temperature Article 10.1016/j.ijhydene.2015.09.087 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.40, no.45, pp.15529 - 15533 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 40 45 15529 15533 scie scopus 000365367200016 2-s2.0-84947745674 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article CATALYST Fe-modified zeolite Ortho-hydrogen Para-hydrogen Magnetic properties Pressure drop