Abstract
The cationic silver clusters of different nuclearity have been produced by radiolysis of AgH-SAPO-17 and AgH-SAPO-35 molecular sieves. The ESR results showed that for the stabilization of cationic Ag clusters the presence, of adsorbate molecules in lattice is necessary. In AgH-SAPO-17 trimers and Ag 4 3+ tetramers trapped inside cancrinite cages are stabilized by interaction with water or methanol molecules located in erionite cages. The ESEEM measurements were carried out to elucidate the local structure of silver dimers and trimers in AgH-SAPO-35 molecular sieve. It is proposed that Ag 2 + dimer situated in hexagonal prism interacts with two H 2 O molecules in two different levyne cages whereas Ag 3 2+ trimer is located in levyne cage close to hexagonal prism and stabilized by interaction with four methanol molecules. The structural and chemical conditions for effective stabilization of cationic silver clusters in SAPO molecular sieves are also discussed.
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.
