Abstract
Carbon nanotubes (CNTs) has been considering as a high-value product from polymer wastes via the coupled thermal-catalytic technology, and how to improve the yield and quality of CNTs is the key to the further industrialization. Herein, a series of Fe-Al catalysts with different Fe-loading and calcination temperature were prepared and expected to boost CNTs formation from low-density polyethylene (LDPE) in the improved two-stage reaction system. The fresh and spent Fe-Al catalysts were characterized in detail by SEM-EDX, XRD, N2 physisorption, NH3-TPD, H2-TPR, TG-DSC, Raman, and TEM to explore the effects of Fe-loading (5–20%) and calcination temperature (450–650 °C) on the physicochemical properties of Fe-Al catalysts as well as the quantity and quality of CNTs. An increase of Fe-loading generated more active sites for CNTs growth while intensified the competition for the carbon source, promoting the yield while reducing the length of CNTs. A decrease of calcination temperature reduced the interaction between Fe sites and Al2O3 support, promoting both the yield and the length of CNTs. This work provided a promising strategy for optimizing Fe-Al catalysts to boost CNTs production from polymer wastes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
