| Title: |
Exploring the role of PdO and oxygen vacancies of Pd/CeO2 in bicarbonate hydrogenation |
| Authors: |
Hyun-Wook Jeong, Gwang-Nam Yun, Youn-Sang Bae, Kyung-Ryul Oh, Young Kyu Hwang |
| Source: |
Journal of CO2 Utilization, Vol 92, Iss , Pp 103028- (2025) |
| Publisher Information: |
Elsevier, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Technology |
| Subject Terms: |
CO2 hydrogenation, Bicarbonate, Formate, PdO, Oxygen vacancy, Technology |
| More Details: |
The hydrogenation of bicarbonates in aqueous solutions using a Pd-based catalyst is an effective method for the production of formate. Herein, we synthesized finely dispersed Pd/CeO2 catalysts via a two-step calcination method and evaluated their catalytic activities before and after the reduction process. The unreduced Pd/CeO2 catalyst exhibited significantly higher activity for bicarbonate hydrogenation than the reduced catalyst. Although the activity declined after multiple cycles, regeneration via calcination effectively restored activity by converting metallic Pd back to highly active PdO. In addition, Pd incorporation and reaction conditions increased Ce3 + contents and oxygen vacancies in CeO2, enhancing bicarbonate adsorption and catalytic performance. These findings highlight the roles of PdO and oxygen vacancies in the CeO2 support in the catalytic activity of Pd/CeO2 catalysts for bicarbonate hydrogenation. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2212-9839 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2212982025000125; https://doaj.org/toc/2212-9839 |
| DOI: |
10.1016/j.jcou.2025.103028 |
| Access URL: |
https://doaj.org/article/807041c799e84517bbe4d19616a3fd61 |
| Accession Number: |
edsdoj.807041c799e84517bbe4d19616a3fd61 |
| Database: |
Directory of Open Access Journals |
