Hits:

Indexed by:期刊论文

Date of Publication:2018-06-15

Journal:JOURNAL OF ALLOYS AND COMPOUNDS

Included Journals:SCIE、EI

Volume:749

Page Number:313-319

ISSN No.:0925-8388

Key Words:Mordenite; ZSM-5; Cyclohexylamine; Oxidation; Adsorption

Abstract:Mordenite and ZSM-5 (with MOR and MFI topology, respectively) have been synthesized using cyclohexylamine (CHA) as structure directing agent. The zeolite crystals obtained were characterized by X-ray diffraction (XRD), infrared spectra (IR), Raman spectra, thermal analysis (TG/DTA), elemental analysis (EA) and C-13 MAS NMR spectroscopy. It was found that CHA was trapped in the two zeolites in its protonated state together with some other organic species. Furthermore, the oxidation of CHA restricted in zeolites by H2O2 has been studied. The oxidation products of restricted CHA were nitro compound and saturated hydrocarbons in mordenite, whereas nitro compound, cyclanes and amines in ZSM-5. The adsorption tests illustrated that the as-synthesized samples and their oxidized products have high adsorption capacity for Ni (II). This work opens new opportunities for further research of molecular reactions on the inorganic hybrids, and provides a new idea for the application of SDAs present in molecular sieves. (c) 2018 Elsevier B.V. All rights reserved.