作者: Lucio Bonaccorsi , Pietro Calandra , Mikhail A. Kiselev , Heinz Amenitsch , Edoardo Proverbio
DOI: 10.1021/LA400951S
关键词: Ethylene oxide 、 Amphiphile 、 Polymer chemistry 、 Hydrothermal synthesis 、 Small-angle X-ray scattering 、 Copolymer 、 Zeolite 、 Self-assembly 、 Materials science 、 Oxide
摘要: We describe the hydrothermal synthesis of zeolite Linde type A (LTA) submicrometer particles using a water-soluble amphiphilic block copolymer poly(dimethylsiloxane)-b-poly(ethylene oxide) as template. The formation and growth intermediate aggregates in presence diblock have been monitored by small-angle X-ray scattering (SAXS) above critical micellar concentration at constant temperature 45 °C. early stage process was characterized incorporation LTA components into surface with primary units 4.8 nm core–shell morphology. During this period, restricted to an initial time 1–3 h, structure does not show significant changes, while subsequent aggregation among these takes place. shape transition SAXS profile late has connected ...