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 spatial restrictions around catalytic sites , provided by molecular - sized micropores , are beneficial to reaction selectivity but also inherently limit diffusion . 
 the molecular transport can be enhanced by introducing meso- and macropores . 
 however , the impact of this extraframework porosity on the local nanoscale reactivity is relatively unexplored . 
 herein we show that the area of enhanced reactivity in hierarchical zeolite , examined with super - resolution fluorescence microscopy , is spatially restricted to narrow zones around meso- and macropores , as observed with focused ion - beam - assisted scanning electron microscopy . 
 this comparison indicates that reagent molecules efficiently reach catalytic active sites only in the micropores surrounding extraframework porosity and that extensive macroporosity does not warrant optimal reactivity distribution throughout a hierarchical porous zeolite . 
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