Subjective Type

Describe some features of catalysis by zeolites.

Solution

Zeolites are microporous aluminosilicates of the general formula $$\displaystyle M_{x/n} [(AlO_2)x (SiO_2)_y mH_2O]$$. They are important oxide catalysts used in petroleum industries for cracking hydrocarbons and isomerisation. Pore structure of catalyst determines the shape selectivity. The range of the pore size in zeolites is $$260$$ pm to $$740$$ pm. For example, a zeolite called $$ZSM-5$$ converts alcohols to gasoline by dehydrating the alcohol.

SIMILAR QUESTIONS

Surface Chemistry

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

Surface Chemistry

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

Surface Chemistry

Which of the following are correct?

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:

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