Interaction of Methylamine with Highly Siliceous MFI, FAU and FER-type Zeolites
作者机构:ShanghaiKeyLaboratoryofMolecularCatalysisandInnovativeMaterialsDepartmentofChemistryFudanUniversityShanghai200433China CenterofAnalysisandMeasurementFudanUniversityShanghai200433China
出 版 物:《Chinese Journal of Chemistry》 (中国化学(英文版))
年 卷 期:2005年第23卷第4期
页 面:413-417页
核心收录:
学科分类:081702[工学-化学工艺] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
主 题:highly siliceous MFI or FAU or FER‐type zeolites adsorption methylamine association
摘 要:The adsorption of methylamine on highly siliceous MFI, FAU and FER‐type zeolites was investigated with XRD, FT‐IR, Raman, 13 C and 29 Si 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 29 Si MAS NMR peaks have been broadened and shifted to low field, and the resonance of Si OH groups has appeared. The vibration of N H has been shifted to low frequency and C N vibration moved to high frequency in the IR spectra, and the 13 C 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 Si OH groups and the high desorption temperature of the methyl‐amine from the zeolites.