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Carbon nanotubes (CNTs) can be well dispersed in an ethanol diluted zeolite precursor and thus encapsulated in the formed dry gel after solvent evaporation. This specially prepared dry gel allows small quantites of CNTs to effectively act as transient inhibitors in the subsequent steam-assisted crystallization of ZSM-5 nanocrystal aggregates with hierarchical porosity. Although finnally separated...
Silanized dry gel prepared by solvent evaporation was subjected to steam treatment to synthesize hierarchically porous zeolite Beta. With well dispersed sodium cations (Na + ) in ethanol solution and dry gel, zeolite Beta with high degree of crystallinity can be obtained by the steam-assisted crystallization method. Two types of organosilanes, short-chain phenylaminopropyltrimethoxysilane...
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