Modulation of the Effective Metal‐Support Interactions for the Selectivity of Ceria Supported Noble Metal Nanoclusters in Atmospheric CO2 Hydrogenation

• Published in: ChemCatChem Vol. 13; no. 3; pp. 874 - 881
• Main Authors: Guo, Yu, Liu, Zongyuan, Zhang, Feng, Wang, De‐Jiu, Yuan, Kun, Huang, Ling, Liu, Hai‐Chao, Senanayake, Sanjaya D., Rodriguez, Jose A, Yan, Chun‐Hua, Zhang, Ya‐Wen
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 05.02.2021
• Subjects: Carbon dioxide; Catalysts; Cerium; Cerium oxides; CO2 Hydrogenation; Effective Metal-Support Interaction; Hydrogenation; Modulation; Nanoclusters; Noble metals; Selectivity; Supported Catalysts; System effectiveness
• ISSN: 1867-3880; 1867-3899
• DOI: 10.1002/cctc.202001531

Ever‐increasing attention is paid to the sustainable utilization of CO2 in the atmosphere out of environmental and economic considerations. The deep‐going clarification of the effective and ineffective metal‐support interactions (MSI) in the supported catalysts for the catalytic performance of CO2 hydrogenation is particularly needed to design highly active nanocatalysts. How to tune the MSI to be effective for the selectivity of goal hydrogenation products is a significant but rather challenging subject. In this work, we demonstrate that the selectivity in CO2 hydrogenation can be regulated from preferential CH4 production to preferential CO production by varying the nature of the electronic MSI for ceria supported noble metal nanoclusters, and the effective MSI play a pivotal role for the catalytic systems with opposite hydrogenation selectivity. The modulation of the effective MSI for the selectivity in CO2 hydrogenation sheds new light on the comprehensive understanding of the MSI and interfacial effects in terms of tailoring and controlling the performance of supported heterogeneous catalysts. Sustainable utilization of CO2: The selectivity of atmospheric CO2 hydrogenation is tuned by the effective metal‐support interactions (MSI) between ceria nanowires and noble metal nanoclusters. Ceria supports donate electrons to Ru and Rh sites, while Pd and Pt nanoclusters transfer electrons to cerium ions, which are effective for elevated CH4 and CO selectivity, respectively. Effective MSI need to be modulated to improve the selectivity of goal products.