Exploring high-performance
zeolite-supported metal catalysts is
of great significance. Herein, we develop a strategy for fabricating
isolated single metal atomic site catalysts in Y zeolite (M-ISAS@Y,
M = Pt, Pd, Ru, Rh, Co, Ni, Cu) by in situ separating and confining
a metal–ethanediamine complex into β-cages during the
crystallization process followed by thermal treatment. The M-ISAS
are stabilized by skeletal oxygens of Y zeolite, and the crystallinity,
porosity, and large surface area are well inherited in M-ISAS@Y. As
a demonstration, acidic Pt-ISAS@Y is used for n-hexane
isomerization involving consecutive catalytic dehydrogenation/hydrogenation
on Pt-ISAS and isomerization on Brønsted acid sites. The turnover
frequency value of Pt-ISAS reaches 727 h–1, 5 times
more than Pt nanoparticles (∼3.5 nm), with a total isomer selectivity
of more than 98%. This strategy provides a convenient route to fabricate
promising zeolite-based M-ISAS catalysts for industrial applications.