Ortho- to para-hydrogen catalytic conversion kinetics

Bruno da Silva Falcão; Kwanghee Jeong; Saif Al Ghafri; Neil Robinson; Liangguang Tang; Karen Kozielski; Michael L. Johns

doi:10.1016/j.ijhydene.2024.02.380

Ortho- to para-hydrogen catalytic conversion kinetics

Bruno da Silva Falcão
, Kwanghee Jeong
, Saif Al Ghafri^*
, Neil Robinson
, Liangguang Tang
, Karen Kozielski
, Michael L. Johns

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

251 Downloads (Pure)

Abstract

Hydrogen is a widely considered energy storage option. Hydrogen liquefaction allows for a substantial increase in volumetric energy density; the required conversion of ortho-hydrogen (o-H₂) to para-hydrogen (p-H₂) is however one of several challenges. This conversion requires a catalyst for sufficiently rapid kinetics, however available conversion data is sparse. To this end, a high throughput ortho-hydrogen (o-H₂) to para-hydrogen (p-H₂) conversion apparatus is detailed. This enables measurements at a controlled temperature of 77 K via the use of in-situ Raman Spectroscopy for quantitative determination of the ortho-para composition. Conversion kinetic data were acquired for a hydrous ferric oxide catalyst. These data were in reasonable agreement with limited existing literature, thus providing some validation for the use of conversion kinetic models, derived from such data, in hydrogen liquefaction design. Kinetic data was acquired using hydrogen provided via electrolysis; the effect of impurity (H₂O) carry-over on conversion kinetics is considered.

Original language	English
Pages (from-to)	345-351
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	62
Early online date	12 Mar 2024
DOIs	https://doi.org/10.1016/j.ijhydene.2024.02.380
Publication status	Published - 10 Apr 2024
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Kinetics
Liquefaction
Ortho-Hydrogen
Para-Hydrogen
Reactor design

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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10.1016/j.ijhydene.2024.02.380Licence: CC BY

Ortho- to para-hydrogen catalytic conversion kinetics
Copyright 2024 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 2.55 MBLicence: CC BY

Cite this

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title = "Ortho- to para-hydrogen catalytic conversion kinetics",

abstract = "Hydrogen is a widely considered energy storage option. Hydrogen liquefaction allows for a substantial increase in volumetric energy density; the required conversion of ortho-hydrogen (o-H2) to para-hydrogen (p-H2) is however one of several challenges. This conversion requires a catalyst for sufficiently rapid kinetics, however available conversion data is sparse. To this end, a high throughput ortho-hydrogen (o-H2) to para-hydrogen (p-H2) conversion apparatus is detailed. This enables measurements at a controlled temperature of 77 K via the use of in-situ Raman Spectroscopy for quantitative determination of the ortho-para composition. Conversion kinetic data were acquired for a hydrous ferric oxide catalyst. These data were in reasonable agreement with limited existing literature, thus providing some validation for the use of conversion kinetic models, derived from such data, in hydrogen liquefaction design. Kinetic data was acquired using hydrogen provided via electrolysis; the effect of impurity (H2O) carry-over on conversion kinetics is considered.",

keywords = "Kinetics, Liquefaction, Ortho-Hydrogen, Para-Hydrogen, Reactor design",

author = "Falc{\~a}o, \{Bruno da Silva\} and Kwanghee Jeong and \{Al Ghafri\}, Saif and Neil Robinson and Liangguang Tang and Karen Kozielski and Johns, \{Michael L.\}",

year = "2024",

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doi = "10.1016/j.ijhydene.2024.02.380",

language = "English",

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pages = "345--351",

journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Ortho- to para-hydrogen catalytic conversion kinetics

AU - Falcão, Bruno da Silva

AU - Jeong, Kwanghee

AU - Al Ghafri, Saif

AU - Robinson, Neil

AU - Tang, Liangguang

AU - Kozielski, Karen

AU - Johns, Michael L.

PY - 2024/4/10

Y1 - 2024/4/10

N2 - Hydrogen is a widely considered energy storage option. Hydrogen liquefaction allows for a substantial increase in volumetric energy density; the required conversion of ortho-hydrogen (o-H2) to para-hydrogen (p-H2) is however one of several challenges. This conversion requires a catalyst for sufficiently rapid kinetics, however available conversion data is sparse. To this end, a high throughput ortho-hydrogen (o-H2) to para-hydrogen (p-H2) conversion apparatus is detailed. This enables measurements at a controlled temperature of 77 K via the use of in-situ Raman Spectroscopy for quantitative determination of the ortho-para composition. Conversion kinetic data were acquired for a hydrous ferric oxide catalyst. These data were in reasonable agreement with limited existing literature, thus providing some validation for the use of conversion kinetic models, derived from such data, in hydrogen liquefaction design. Kinetic data was acquired using hydrogen provided via electrolysis; the effect of impurity (H2O) carry-over on conversion kinetics is considered.

AB - Hydrogen is a widely considered energy storage option. Hydrogen liquefaction allows for a substantial increase in volumetric energy density; the required conversion of ortho-hydrogen (o-H2) to para-hydrogen (p-H2) is however one of several challenges. This conversion requires a catalyst for sufficiently rapid kinetics, however available conversion data is sparse. To this end, a high throughput ortho-hydrogen (o-H2) to para-hydrogen (p-H2) conversion apparatus is detailed. This enables measurements at a controlled temperature of 77 K via the use of in-situ Raman Spectroscopy for quantitative determination of the ortho-para composition. Conversion kinetic data were acquired for a hydrous ferric oxide catalyst. These data were in reasonable agreement with limited existing literature, thus providing some validation for the use of conversion kinetic models, derived from such data, in hydrogen liquefaction design. Kinetic data was acquired using hydrogen provided via electrolysis; the effect of impurity (H2O) carry-over on conversion kinetics is considered.

KW - Kinetics

KW - Liquefaction

KW - Ortho-Hydrogen

KW - Para-Hydrogen

KW - Reactor design

U2 - 10.1016/j.ijhydene.2024.02.380

DO - 10.1016/j.ijhydene.2024.02.380

M3 - Article

AN - SCOPUS:85187236710

SN - 0360-3199

VL - 62

SP - 345

EP - 351

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

ER -

Ortho- to para-hydrogen catalytic conversion kinetics

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this