Abstract
A series of Pd/C catalysts modified with CeO2 were characterized by X-ray diffraction (XRD), transmission electron microscopy–energy dispersive X-ray spectroscopy (TEM-EDX), temperature-programmed reduction (TPR), hydrogen chemisorption, and temperature-programmed desorption (TPD) measurements. The influence of CeO2 additive on the physicochemical and catalytic properties of Pd/C catalyst was investigated. The addition of CeO2 facilitated the reduction of PdO, while the presence of Pd shifted the reduction temperature of CeO2 to lower values. Thus, a synergistic effect between Pd and CeO2 was observed on these CeO2-modified Pd/C catalysts. Both the dispersion of Pd and the hydrogen adsorption strength were significantly promoted by the addition of CeO2. Moreover, Pd-CeO2/C catalysts presented high catalytic performance for crude caprolactam (CPL) hydrogenation purification in comparison with Pd/C catalyst, which may be attributed to higher dispersion, stronger hydrogen adsorption strength, and better redu...
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.
