Question

Shape selective catalysts are so called because of :

• A. the shape of the catalysts
• B. the specificity of the catalysts
• C. the size of the pores of the catalysts which can trap only selective molecules
• D. their use for only some selected reactions

Answer 1

The correct option is C the size of the pores of the catalysts which can trap only selective molecules

Catalytic reaction that depends upon the structure of pores of the catalyst and the size of the reactant and product molecules is called shape/selective catalysis.

Zeolites are good shape/selective catalysts because of their honeycomb-like structures. Zeolites are aluminosilicates, i.e., three dimensional network silicates in which some silicon atoms are replaced by aluminium atoms.