Stable Cuδ+ species - Catalyzed CO₂ hydrogenation to methanol in silanol nests on Cu/S-1 catalyst

Zhengxing Cui, Yeqing Wang, Peipei Zhang, Song Lu, Yuxuan Chen, Xiaotao Yu, Min Guo, Tiancun Liu, Jiadi Ying, Qi Shen, Yinying Jin and Zhixin Yu

Applied Energy, 2024, vol. 365, issue C, No S0306261924006305

Abstract: Fine-regulating the electronic state of metal species to enhance the catalytic activity has demonstrated to be an effective yet persistent challenge. The study introduces an innovative method for enhancing catalytic performance in hydrogenating CO2 to methanol via modulating copper-support interactions through the adjustment of surface silanol groups. The developed Cu/S-1 catalyst exhibits outstanding results: 85% methanol selectivity and 8.0% CO2 conversion under 240 °C and 3 MPa, while maintaining stability for over 200 h. This performance surpasses that of the Cu/SiO2 catalyst. Analyses indicate that the higher presence of Cuδ+ species in Cu/S-1 is attributed to the silanol nests in S-1 zeolite, which can stabilize these species and prevent the further reduction. The study identifies Cuδ+ and Cu0 as active species for CH3OH and CO production, respectively. A higher Cuδ+/Cu0 ratio eventuates better CO2 conversion and CH3OH selectivity. Copper-support interaction is a key to the exceptional stability of the catalyst.

Keywords: Silanol nests; Cuδ+ species; Cu-based catalyst; Methanol; CO2 hydrogenation (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261924006305
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:365:y:2024:i:c:s0306261924006305

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2024.123247

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().