Samarium-Promoted Layered La2NiO4 Perovskite for Hydrogen Production via the Auto-Thermal Reforming of Acetic Acid
The auto-thermal reforming (ATR) of acetic acid is an effective hydrogen production method, but it suffers from catalyst deactivation by coking. Sm-promoted layered La<sub>2</sub>NiO<sub>4</sub> perovskite catalysts were synthesized via the sol-gel method and its catalytic performance in the ATR of HAc was further evaluated. The characterization results demonstrate that the incorporation of Sm into the lattice of La<sub>2</sub>NiO<sub>4</sub> perovskite led to the formation of Ni-La-Sm-O species, inducing crystal defects in the perovskite structure which could promote the gasification of coking precursors. Additionally, Sm regulated the reduction characteristics of La<sub>2</sub>NiO<sub>4</sub>, resulting in the formation of highly dispersed nickel nanoparticles upon the hydrogen reduction, which increased the number of active sites available for acetic acid conversion. Consequently, a stable reactivity without obvious coking was obtained over a Ni<sub>0.42</sub>La<sub>0.7</sub>Sm<sub>0.36</sub>O<sub>2.01±δ</sub> catalyst within the ATR of Hac. The hydrogen yield reached 2.53 mol-H<sub>2</sub>/mol-HAc along with the complete conversion of acetic acid.
Authors
- Xiaomin Hu (ORCID: https://orcid.org/0000-0002-5856-0057)
- Lihong Huang (ORCID: https://orcid.org/0000-0003-1663-8570)
- Ning Wang (ORCID: https://orcid.org/0000-0002-8801-6255)
Institutions
- Chengdu University of Technology (CN)
- Beijing University of Technology (CN)
Publication Details
- Journal
- Materials
- Published
- 2025-03-27
- DOI
- https://doi.org/10.3390/ma18071508
- Citations
- 1
- Primary Topic
- Catalysis and Hydrodesulfurization Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.71
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Beijing Municipality