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• W3156168048 endingPage "18703" @default.
• W3156168048 startingPage "18693" @default.
• W3156168048 abstract "Selective hydrogenation of CO2 to methanol is a two birds, one stone technology to mitigate the greenhouse effect and solve the energy demand-supply deficit. Cu-based catalysts can effectively catalyze this reaction but suffer from low catalytic stability caused by the sintering of Cu species. Here, we report a series of zeolite-fixed catalysts Cu/ZnOx(Y)@Na-ZSM-5 (Y is the mass ratios of Cu/Zn in the catalysts) with core-shell structures to overcome this issue and strengthen the transformation. Fascinatingly, in this work, we first employed bimetallic metal-organic framework, CuZn-HKUST-1, nanoparticles (NPs) as a sacrificial agent to introduce ultrasmall Cu/ZnOx NPs (∼2 nm) into the crystalline particles of the Na-ZSM-5 zeolite via a hydrothermal synthesis method. The catalytic results showed that the optimized zeolite-encapsulated Cu/ZnOx(1.38)@Na-ZSM-5 catalyst exhibited the space time yield of methanol (STYMeOH) of 44.88 gMeOH·gCu-1·h-1, much more efficient than the supported Cu/ZnOx/Na-ZSM-5 catalyst (13.32 gMeOH·gCu-1·h-1) and industrial Cu/ZnO/Al2O3 catalyst (8.46 gMeOH·gCu-1·h-1) under identical conditions. Multiple studies demonstrated that the confinement in the zeolite formwork affords an intimate surrounding for the active phase to create synergies and avoid the separation of Cu-ZnOx interfaces, which results in an improved performance. More importantly, in the long-term test, the Cu/ZnOx(1.38)@Na-ZSM-5 catalyst exhibited constant STYMeOH with superior durability benefitted from its fixed structure. The current findings demonstrate the importance of confinement effects in designing highly efficient and stable methanol synthesis catalysts." @default.
• W3156168048 created "2021-04-26" @default.
• W3156168048 creator A5021032333 @default.
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• W3156168048 date "2021-04-14" @default.
• W3156168048 modified "2023-10-17" @default.
• W3156168048 title "Zeolite-Encapsulated Ultrasmall Cu/ZnO<i>_x</i> Nanoparticles for the Hydrogenation of CO₂ to Methanol" @default.
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• W3156168048 doi "https://doi.org/10.1021/acsami.1c00432" @default.
• W3156168048 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33852283" @default.
• W3156168048 hasPublicationYear "2021" @default.
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