Abstract
MFl-type zeolites prepared in the presence of Al and Pr 4N + in fluoride media at pH 5–10 were characterized with various techniques (SEM; XRD; Chemical analysis; 19F, 27Al, and 29Si MAS n.m.r. n-hexane adsorption) in their as-synthesized, calcined, and postsynthesis-treated forms. The purity and the crystallinity of the materials are comparable with those synthesized in OH − medium. Although the overall Si Al ratio can be as low as 12, a part of Al does not display its normal tetrahedral coordination in the framework. This type of aluminum, whose amount increases during removal of the template by calcination, can be revealed by 19F MAS n.m.r. after a treatment of the calcined samples with Pr 2NH 2F solutions. It is also responsible for the modification of the adsorption kinetics of n-hexane.
Sign-in/Register to access full text options 
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.
