Breakthrough in Liquid Hydrogen Production: A Sustainable Energy Future

Strategic Insights -

Researchers at Xi'an Jiaotong University in Shaanxi, People's Republic of China, have made a significant contribution to the field of sustainable energy with their innovative approach to liquid hydrogen production. The team, led by Qiao Zhang, has developed a coalbed methane reforming based liquid hydrogen manufacture scenario that combines pressure swing adsorption, membrane, and MEA absorption technology to achieve efficient hydrogen concentration and CH4 recovery, while capturing CO2. This breakthrough has far-reaching implications for the reduction of greenhouse gas emissions and the creation of a clean, low-carbon energy landscape.

Key Takeaways:

  • The new separation process combines pressure swing adsorption (PSA), membrane, and MEA absorption technology to achieve efficient hydrogen concentration and CH4 recovery, while capturing CO2.
  • The utilization of flue gas waste heat and liquefied natural gas (LNG) cooling energy significantly reduces energy consumption.
  • Process simulation, heat integration, and tech-economic analysis were used to assess the superiority of the whole system.
  • Results indicate that for the plant with annual productivity of 42.35 kilotons, its unit liquid hydrogen cost is 2.75 $/kg, energy consumption is 23.74 kW h/kg, and the carbon emission is 11.56 kg/kg.
  • The current system can recover 209.07 tons of carbon dioxide and 33.48 tons of methane annually.
  • The research provides a promising liquid hydrogen generation technology for future application.
  • The study has been peer-reviewed and published in the Journal of Energy.
  • The research team includes Qiao Zhang, Rong Ma, and Wenting Duan from Xi'an Jiaotong University.

Statistics:

  • Unit liquid hydrogen cost: 2.75 $/kg
  • Energy consumption: 23.74 kW h/kg
  • Carbon emission per kilogram of hydrogen produced: 11.56 kg/kg
  • Annual carbon dioxide recovery: 209.07 tons
  • Annual methane recovery: 33.48 tons
  • Annual productivity: 42.35 kilotons
  • Energy efficiency improvement through flue gas waste heat utilization: significant reduction
  • Energy efficiency improvement through LNG cooling energy utilization: significant reduction

Sources:

  • Research: Integrated Liquid Hydrogen Production Technology With Cascade Separation and Waste Heat&cooling Energy Utilization
  • Journal: Energy
  • Publisher: Elsevier
  • Volume: 2025, Issue: 335
  • Authors: Qiao Zhang, Rong Ma, Wenting Duan
  • Affiliation: Xi'an Jiaotong University, School of Chemical Engineering and Technology
  • Date: November 3, 2025
  • Citation: NewsRx. New Engineering Data Have Been Reported by Researchers at Xi'an Jiaotong University (Integrated Liquid Hydrogen Production Technology With Cascade Separation and Waste Heat&cooling Energy Utilization). Journal of Engineering. November 3, 2025; p 1805.