@article{garcia-vallejo_rukh_wang_cai_brody_killmer_lan_yao_li_park_2025, title={A new approach to improve the economic and environmental attractiveness of biomethane from biomass gasification with redox-activated CO2 sorbents}, volume={523}, ISSN={1385-8947}, url={http://dx.doi.org/10.1016/j.cej.2025.167510}, DOI={10.1016/j.cej.2025.167510}, journal={Chemical Engineering Journal}, publisher={Elsevier BV}, author={Garcia-Vallejo, Maria Camila and Rukh, Mahe and Wang, Song and Cai, Runxia and Brody, Leo G. and Killmer, Casey and Lan, Kai and Yao, Yuan and Li, Fanxing and Park, Sunkyu}, year={2025}, month={Aug}, pages={167510} }
 @article{yao_rukh_killmer_smith_neal_li_2025, title={Sr2MnO4 as a reactive CO2 sorbent for sorption-enhanced steam reforming of biogas to green hydrogen}, volume={520}, DOI={10.1016/j.cej.2025.166307}, abstractNote={Sorption-enhanced steam biogas reforming is an attractive approach for hydrogen production from renewable resources, with the performance of the CO 2 sorbents being a critical factor. In this study, Sr 2 MnO 4 was investigated as a redox-activated CO 2 sorbent for sustainable hydrogen production from biogas. The Sr 2 MnO 4 sorbents exhibited a CO 2 sorption capacity of over 26 g per 100 g of sorbents, along with excellent cyclic stability in thermogravimetric analysis. Complete regeneration of the sorbent was achieved with a relatively small temperature swing (100 °C). Fixed-bed reactor experiments further demonstrated the application of Sr 2 MnO 4 sorbents in sorption-enhanced steam biogas reforming. Biogas simulants with varying CO 2 contents were converted to ~94 vol% H 2 before CO 2 breakthrough. Stable CO 2 capacity and hydrogen production were maintained over 20 cycles. In addition, optimization of the regeneration duration enabled the generation of highly pure CO 2 and more efficient use of O 2 . These results support the feasibility of biogas-to‑hydrogen conversion with net-negative carbon emissions through integration with CO 2 capture and sequestration. • Ruddlesden-Popper oxide Sr 2 MnO 4 is reported as a redox-activated CO 2 sorbent. • Sr 2 MnO 4 shows considerable CO 2 sorption capacity and excellent cyclic stability. • Biogas feedstocks are converted into ~94 % pure H 2 using Sr 2 MnO 4 sorbents. • High purity CO 2 was co-produced for autothermal, integrated CO 2 sequestration.}, journal={Chemical Engineering Journal}, author={Yao, Yuge and Rukh, Mahe and Killmer, Casey and Smith, Cooper P. and Neal, Luke and Li, Fanxing}, year={2025}, month={Jul} }