Design of multistage fixed bed reactors for SMR hydrogen production based on the intrinsic kinetics of Ru-based catalysts

Jaewon Lee, Chonghyo Joo, Hyungtae Cho, Youngjin Kim, Seongbin Ga, Junghwan Kim

Research output: Contribution to journalArticlepeer-review


In recent years, interest in the development of a hydrogen economy has increased, and the steam methane reforming (SMR) reaction, which yields so-called “gray” hydrogen, is expected to play a key role in hydrogen refueling stations (HRSs) in the interim before “green” hydrogen process is developed. For this purpose, compact and economical designs for small- to medium-scale SMR processes for HRSs are required. Herein, we investigated the intrinsic kinetics of a Ru-based catalyst using catalyst experiments and parametric estimation. In addition, reactor modelling was performed using a kinetic model with a special focus on multistage reactor configurations. The proposed reactor design showed an increase in the reactor energy supplied rate from 6.98 to 7.55 kW compared to the base case (single-stage reactor), and the conversion increased from 86.2% to 91.2%. Further, the drastic temperature drop owing to the strongly endothermic nature of the SMR reaction was reduced, and, thus, reactor stability was improved. The proposed novel design of a multistage reactor using a Ru-based catalyst will advance the development of the hydrogen economy.

Original languageEnglish
Article number115981
JournalEnergy Conversion and Management
Publication statusPublished - 2022 Sept 15

Bibliographical note

Funding Information:
Funding: This work was supported by the Korean Institute of Industrial Technology within the framework of the “Development of Global Optimization System for Energy Process“ project [Grant Nos. IZ-22-0049 and UR-22-0031].

Publisher Copyright:
© 2022 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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