콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Tandem Catalysts of Metal-Modified ZSM-5 with Na-promoted Zinc Ferrite for CO2 Hydrogenation
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2025-08
- 저자명 Park, H., Park, S., Kim, N. S., Kim, Y. T., Chae, H.-J., Kim, J.-C., and Kim, T.-W*
- 학술지명 Catalysis Today
- 발행처명 ELSEVIER
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
논문 초록 (Abstract)
The CO2 hydrogenation to aromatics reaction is a promising route to mitigate greenhouse gas emissions while producing basic petrochemical feedstocks. Herein, we demonstrate a tandem catalyst system combining iron- and phosphorus- modified ZSM-5 zeolite (Fe-P-ZSM-5) with sodium-promoted zinc ferrite (NaFeZn) to obtain a catalyst for the reaction to directly convert CO2 into aromatics in a single reactor. The NaFeZn catalyst selectively converted CO2 into long-chain olefins as primary products. These olefins were subsequently transformed into aromatics by ZSM-5 zeolites, while paraffins were formed as by-products from the olefin hydrogenation reaction. Compared to ZSM-5, Fe-P-ZSM-5 exhibits enhanced selectivity for aromatics production due to iron and phosphorus modifications that promote aromatization while suppressing hydrogenation. This catalytic enhancement arises from the synergistic interaction between phosphorus and iron. Phosphorus weakens acid strength through its interaction with aluminum, thereby suppressing olefin hydrogenation. Additionally, phosphorus stabilizes iron as an isolated species, which in turn provides distinctive active sites favoring aromatization.
