Abstract
AbstractThe adsorption of methylamine on highly siliceous MFI, FAU and FER‐type zeolites was investigated with XRD, FT‐IR, Raman, 13C and 29Si MAS NMR, and compared with the adsorption of methanol. As the adsorption of the amine, the relative intensity of XRD peaks of the zeolites has been changed significantly, the high‐resolution 29Si MAS NMR peaks have been broadened and shifted to low field, and the resonance of SiOH groups has appeared. The vibration of NH has been shifted to low frequency and CN vibration moved to high frequency in the IR spectra, and the 13C resonance peak broadened and shifted to high field for the adsorbed amine. The facts reveal an associating interaction between the perfect framework of the zeolites and the adsorbed methylamine with hydrogen bonds, leading to the formation of SiOH groups and the high desorption temperature of the methyl‐amine from the zeolites.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.