Isothermal sorption-enhanced biomass gasification for hydrogen-rich syngas production using SrMnO<sub>3</sub> redox-activated CO<sub>2</sub> sorbents in a fluidized bed

Isothermal sorption-enhanced biomass gasification for hydrogen-rich syngas production using SrMnO₃ redox-activated CO₂ sorbents in a fluidized bed

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Runxia Cai^a, Mahe Rukh^a, Andrew Jones^b, Leo Brody^a, Alexandra Pierce^a, Mahdi Niknam Shahrak^a, Stephen Kelly^b, Sunkyu Park^b^,^*, Fanxing Li^a^,^**

Particuology | 2026, 115 : 256 - 266

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Particuology | 2026, 115: 256-266

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Isothermal sorption-enhanced biomass gasification for hydrogen-rich syngas production using SrMnO₃ redox-activated CO₂ sorbents in a fluidized bed

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Runxia Cai^a, Mahe Rukh^a, Andrew Jones^b, Leo Brody^a, Alexandra Pierce^a, Mahdi Niknam Shahrak^a, Stephen Kelly^b, Sunkyu Park^b^,^*, Fanxing Li^a^,^**

Affiliations

^aDepartment of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA

^bDepartment of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695-7905, USA

Present address: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

About Author:

These authors contributed equally to this work.

Present address: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

Published: 2026-08-10 doi: 10.1016/j.partic.2026.05.018

Outline

Abstract

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Sorption-enhanced steam gasification (SESG) represents a promising route for hydrogen-rich syngas production. However, the rapid deactivation of conventional CaO-based sorbents, and the efficiency loss associated with the high temperature sorbent regeneration step, remain as critical challenges. In this study, a redox-activated SrMnO₃ sorbent was used for isothermal SESG of biomass in a fluidized-bed to investigate fuel flexibility, torrefaction effects, and long-term stability. Four biomass feedstocks as well as their torrefied counterparts were evaluated. All untreated feedstocks produced hydrogen-rich syngas with H₂ concentration >60% and H₂/CO ratios >4 under isothermal operation at 850 ℃. Torrefaction decreased H₂ purity and syngas yield due to reduced volatile matter content. Long-term experiments in both a fluidized-bed reactor and TGA demonstrated excellent cyclic stability of SrMnO₃ and strong ash resistance. The structural and compositional properties of the sorbents were characterized in detail, confirming the chemical and structural stability of the SrMnO₃ sorbent during prolonged cyclic operation. Process simulation further showed that SESG of biomass significantly enhanced cold gas efficiency while maintaining a comparable heat demand compared to state-of-the-art indirect biomass gasification. Overall, SrMnO₃ exhibits strong potential as a robust sorbent for efficient and flexible biomass-to-hydrogen conversion.

Key words

Gasification / Hydrogen / Sorbent / Carbon dioxide / Fluidized bed

Cite this Article

Runxia Cai, Mahe Rukh, Andrew Jones, Leo Brody, Alexandra Pierce, Mahdi Niknam Shahrak, Stephen Kelly, Sunkyu Park, Fanxing Li. Isothermal sorption-enhanced biomass gasification for hydrogen-rich syngas production using SrMnO₃ redox-activated CO₂ sorbents in a fluidized bed[J]. Particuology, 2026 , 115 : 256 -266 . DOI: 10.1016/j.partic.2026.05.018

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Funding

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U.S. Department of Energy Office of Energy Efficiency & Renewable Energy(EE0008809)
US National Science Foundation(CBET-1923468)

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Year 2026 volume 115 Issue 0

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Article Info

doi: 10.1016/j.partic.2026.05.018

Receive Date：2026-04-08
Online Date：2026-08-20
Published：2026-08-10

Article Data

Affiliations

History

Received：2026-04-08
Revised：2026-05-22
Accepted：2026-05-24

Funding

U.S. Department of Energy Office of Energy Efficiency & Renewable Energy(EE0008809)

US National Science Foundation(CBET-1923468)

Affiliations

^aDepartment of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA

^bDepartment of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695-7905, USA

Corresponding:

^* E-mail addresses: spark@ncsu.edu (S. Park)

^** fli5@ncsu.edu (F. Li).

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表12种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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