Abstract:An in situ encapsulation
process was used to prepare
ordered worm-like mesoporous Pt@SAPO-11 catalysts with different Pt
loadings. Transmission electron microscopy images showed that Pt nanoparticles
encapsulated within the SAPO-11 support mesopores were uniformly distributed
and highly dispersed and had a narrow particle size distribution of
2–7 nm. Scanning electron microscopy indicated that increasing
the Pt loading from 0.6 to 1.6 wt % did not significantly change the
crystalline morphology of the catalyst… Show more
“…Encapsulation is a reasonable strategy to protect metal species from agglomeration and sintering through spatial confinement. − Zeolites with an ordered and rigid structure are ideal supports to encapsulate metal species. − Two strategies for introducing metals within the zeolite mainly include the in situ encapsulation methods and post-encapsulation methods. For the PDH reaction, pure silica zeolites have attracted wide attention owing to no additional acid sites, which cause side reactions and coke formation. − Liu et al prepared a Pt cluster encapsulated in a MCM-22 zeolite during the growth of a two-dimensional sample into three dimensions (Figure a) .…”
“…Encapsulation is a reasonable strategy to protect metal species from agglomeration and sintering through spatial confinement. − Zeolites with an ordered and rigid structure are ideal supports to encapsulate metal species. − Two strategies for introducing metals within the zeolite mainly include the in situ encapsulation methods and post-encapsulation methods. For the PDH reaction, pure silica zeolites have attracted wide attention owing to no additional acid sites, which cause side reactions and coke formation. − Liu et al prepared a Pt cluster encapsulated in a MCM-22 zeolite during the growth of a two-dimensional sample into three dimensions (Figure a) .…”
A series of mesoporous Pt@SAPO−11 catalysts with different Pt loadings were prepared using an in situ encapsulation process. These materials exhibited good topological structures and high Brunauer−Emmett−Teller (BET) surface areas...
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