e-journal
Catalytic properties of nano-sized ZSM-5 aggregates
              Abstract.
Nano-ZSM-5 (NZ) with well-defined porosity was synthesized by organic silica method. The material
exhibited more than a twofold increase in pore volume when compared to the normal ZSM-5 (HZ). The
increase in pore volume is observed in the entire range of the pores with diameter from 5A˚ to 1500A˚ . The
order of increase in volume is macropores (>500A˚ ) > micropores (up to 20A˚ ) > mesopores (20–500A˚ ).
Although macropore and mesopore formation is responsible for the major increase in the pore volume,
significant increase in zeolitic pore volume was also observed in NZ. Both the ZSM-5 materials were
tested for esterification of cyclohexanol with acetic acid under autogeneous pressure conditions where
NZ showed better activity (69% conversion).
Keywords:
ZSM-5
Mesoporosity
Micropore volume
t-Plot and adsorption isotherms            
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