Abstract
Self-pillared pentasil (SPP) zeolite is a hierarchically-structured zeolite comprised of single-unit cell thick MFI nanosheets arranged in a “house of cards” structure. The nucleation and growth of SPP proceeds through three phases involving the evolution of precursor amorphous nanoparticles to MFI nanosheets and then rotational intergrowth of sheets to produce the SPP morphology. This paper expands upon an earlier report to extend understanding of nucleation and growth events throughout the entire preparation process, from hydrolysis of the silica source to high conversion to crystals. Common aspects with the extensively investigated clear-sol silicalite-1 system are identified. Evaporation of co-solvent ethanol was found to accelerate the crystallization significantly. Furthermore, robust synthesis of SPP with high density of well-developed single-unit cell domains has been achieved with addition of potassium and sodium to the synthesis sols.
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.
