Single Choice

Which one of the following statements about the zeolites is false?

Athey have open structure which enables them to take up small molecules
Bzeolites are aluminosilicates having three dimensional network
Csome of the SiO$$_{4}^{4-}$$ units are replaced by AlO$$_{4}^{5-}$$ and AlO$$_{6}^{9-}$$ ions in zeolites
Correct Answer
Dthey are used as cation exchangers.

Solution

Zeolites are aluminosilicates having the three-dimensional open structure in which four or six-membered rings predominates.
Thus, due to an open-chain structure, they have cavities and can take up water and other small molecules. Also, they consist of a crystalline structure formed from $$SiO_{4}^{4-}$$ and $$AlO_4^{5-}$$ only.


SIMILAR QUESTIONS

Surface Chemistry

Which one of the following statements is not correct about zeolites?

Surface Chemistry

Which of the following are correct?

Surface Chemistry

Describe some features of catalysis by zeolites.

Surface Chemistry

What is shape selective catalysis?

Surface Chemistry

Which of the following statements about zeolites is not correct?

Surface Chemistry

Shape-selective catalysis is a reaction catalysed by:

Surface Chemistry

The average degree of freedom per molecule for a gas are $$6$$. The gas performs $$25 J$$ of work when it expands at a constant pressure. The heat absorbed by gas is

Surface Chemistry

Give an example of shape-selective catalyst.

Surface Chemistry

Shape-selective catalysis is a reaction catalysed by:

Contact Details