A new hydrogenation-coupling approach for supra-equilibrium conversion in a water–gas shift reaction: Simultaneous hydrogen generation and chemical storage

Michael Ho Kei Lee, Hang Yin, Wasim Ullah Khan, Frank L.Y. Lam, Yongsik Ok, Matthew J. Watson, Shusheng Pang, Alex C.K. Yip

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This work reports a practical system of hydrogenation-coupled water–gas shift reaction (HC-WGSR) for simultaneous hydrogen production and storage. The performance of the HC-WGSR system was predicted through thermodynamic simulation. The proof-of-concept tandem water–gas shift and propene hydrogenation strategy was successfully demonstrated using a bifunctional catalyst. The hydrogen produced from the WGSR was successfully stored in propane simultaneously, and the overall CO conversion of nearly 100% overcame the equilibrium limitation of the WGSR over a wide range of space velocities (3000 - 6000 h−1) at 200 °C and 1 bar. This study demonstrated that the in situ removal/storage of H2 using the hydrogenation-coupling approach is promising even in a CO2-rich environment (20% CO2). The new approach shall see a great opportunity in using organic hydrogen carriers, e.g., benzene, toluene, N-ethylcarbazole, to expand the industrial applications, underpinning the global supply chain for hydrogen energy.

Original languageEnglish
Pages (from-to)18567-18571
Number of pages5
JournalInternational Journal of Hydrogen Energy
Volume48
Issue number49
DOIs
Publication statusPublished - 2023 Jun 8

Bibliographical note

Funding Information:
The authors acknowledge financial support from the Ministry of Business, Innovation & Employment in New Zealand under the MBIE Endeavour “Smart Ideas” grant (UOCX1905), and the Faculty Research Establishment Grant (Grant No. 410085_4224) funded by the Victoria University of Wellington.

Publisher Copyright:
© 2023 Hydrogen Energy Publications LLC

Keywords

  • Bifunctional catalyst
  • Chemical storage
  • Hydrogen generation
  • Supra-equilibrium
  • Water–gas shift reaction

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'A new hydrogenation-coupling approach for supra-equilibrium conversion in a water–gas shift reaction: Simultaneous hydrogen generation and chemical storage'. Together they form a unique fingerprint.

Cite this