Abstract
1. The total concentrations of hydrogen (in the form of H2O, OH, and H3O+) in CaX and CaY zeolites, evacuated at 10−4 torr and 300, 400, or 500°, were determined by the method of isotopic exchange with D2. 2. There is a threshold degree of exchange of Na+ for Ca2+, after which a rapid increase in the content of protium and the catalytic activity of zeolites in reactions of the carbonium ion type is observed. 3. The mobility of H, as well as its thermal stability, increase with increasing Ca2+ content and mole ratio SiO2/Al2O3 in zeolites of the faujasite type. 4. For calcium zeolites prepared from NaY, produced by hydrothermal synthesis and dealumination, the content and mobility of protium are close, which indicates identity of samples prepared by different methods.
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 callMore From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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.
