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Mechanism of stability and deactivation of N-doped CuFeZn catalysts for C2+ alcohols synthesis by hydrogenation of CO2


Abstract The catalysts for synthesis of C2+ alcohols by hydrogenation of CO2 developed so far still have challenges in meeting expectations in terms of the target product selectivity and catalyst stability. In this work, nitrogen-doped CuFeZn catalysts by calcinated in nitrogen atmosphere show good catalytic activity and stability. The optimal PDA/CFZ-N450 exhibits outstanding C2+ alcohols selectivity of 39.75%. In addition, the stabilization period lasts for 264 h. The superior stability is closely related to the doped N. It is confirmed that the oxygen vacancies facilitate the activity of catalysts as well as stabilize the doped N species, which is correspondingly essential for the stability of the catalysts. However, sintering of active metals and migration of active species to the catalyst surface possibly leads to activity decline.
Authors Yazhen Jia , Bin Wang University of Wyoming , Yueli Wen University of WyomingORCID , Maohong Fan University of WyomingORCID , Chen Yang ORCID , Sensen Zhou , Zheng Cui ORCID , Wei Huang ORCID
Journal Info Elsevier BV | Fuel Processing Technology , vol: 250 , pages: 107901 - 107901
Publication Date 11/1/2023
ISSN 0378-3820
TypeKeyword Image article
Open Access closed Closed Access
DOI https://doi.org/10.1016/j.fuproc.2023.107901
KeywordsKeyword Image Homogeneous Catalysts (Score: 0.523576)