[anisayati]

hi, i'm a newbie...
i got a question here,

why surface area (m2/g) of nanoparticle is small compared to zeolite catalyst, such as HZSM5?

waiting for reply...

[eugenedakin]

Hello anisayati,

What is the size of HZSM5?

Sincerely,

Eugene

[anisayati]

thanks for reply..

the particle size of HZSM5 is about 600nm. surface area of HZSM5 is about 400m2/g.

[eugenedakin]

Hi anisayati,

Can I also ask you to provide the size and surface area of the nanoparticle that you are referring to?

Thanks for your help,

Eugene

[anisayati]

its ok..
i need your help too...

particle size of ZnO is about 10nm, its surface are is about 60 m2/g..

[eugenedakin]

Hello anisayati,

Lets pretend that both particles are spherical and have the same density.

A smaller sized particle will have less pore spaces, so the exposed surface area should increase (large particle ~60 m2/g, nano particle 600 m2/g).

The trick here is the weight.. My previous statement said the same density.

Could you look up the density of these two components. I am guessing that one will be significantly more dense than the other.

I am looking forward to your response.

Sincerely,

Eugene