The
development of nano-sized titanosilicate zeolites with hierarchical
structures is crucial in promoting the efficient epoxidation of alkenes.
In the present work, nano-sized hierarchical Ti-β (*BEA) zeolites with high crystal yield are prepared by a one-pot nanoseed-assisted
approach. The influence of seed size on the resultant Ti-β zeolites
is investigated by complementary characterizations, including X-ray
diffraction (XRD), scanning electron microscopy (SEM), transmission
electron microscopy (TEM), Fourier transform infrared spectroscopy
(FT-IR), N2 adsorption/desorption, UV–vis diffuse
reflectance spectroscopy (DRS), and UV Raman spectroscopy. The possible
process for the formation of hierarchical Ti-β nanocrystals
with the assistance of nanoseeds in the synthesis gel is proposed.
Consequentially, the nano-sized hierarchical material prepared by
the nanoseed-assisted method shows excellent mass transportation and
accessibility to active sites by reducing particle size and constructing
hierarchical porosity, hence showing a remarkably enhanced catalytic
activity and selectivity in the epoxidation reaction of alkenes. This
work will shed light on the efficient preparation of nano-sized titanosilicate
zeolites.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.