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What is shape selective catalysis?...

What is shape selective catalysis?

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The catalytic reaction that depends upon the pore structure of the catalyst and the size of the reactant and product molecules is called shape selective catalysis.
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Read the given passage and answers following questions : Zeolites are alumino-silicates that are micro-porous in nature. Zeolites have a honeycomb like structure, which makes them shape-selective catalysts. They have an extended 3D-nelwork of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shape selective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. What is the pore size of Zeolites ?

Given an example of shape selective catatyst.

Read the given passage and answers following questions : Zeolites are alumino-silicates that are micro-porous in nature. Zeolites have a honeycomb like structure, which makes them shape-selective catalysts. They have an extended 3D-nelwork of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shape selective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. In which chemical industry Zeolites used ?

Read the given passage and answers following questions : Zeolites are alumino-silicates that are micro-porous in nature. Zeolites have a honeycomb like structure, which makes them shape-selective catalysts. They have an extended 3D-nelwork of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shape selective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. Upon which factor a catalytic reaction depends ?

Zeolites are alumina-silicates that are micro-porous in nature. Zeolites have a honeycombIike structure, which makes them shape-selective catalysts. They have an extended 3D-network of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shapeselective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. Upon which factor a catalytic reaction of shape selective catalyst depends ?

Zeolites are alumina-silicates that are micro-porous in nature. Zeolites have a honeycombIike structure, which makes them shape-selective catalysts. They have an extended 3D-network of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shapeselective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. What is the pore size of Zeolites ?

Shape selective catalysis is a reaction catalysed by : Zeolites, Enzymes, Platinum, Zeigler-Natta catalyst.

What is heterogeneous catalysis ? What role does adsorption play in heterogeneous catalysis ?

what is enzyme catalysis?

BETTER CHOICE PUBLICATION-SURFACE CHEMISTRY -Question Bank
  1. Explain briefly homogeneous catalysis.

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  2. What do you understand by activity and selectivity of a catalyst ? Giv...

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  3. What is shape selective catalysis?

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  4. Describe some features of catalysis by zeolites.

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  5. How do enzymes differ from catalysts ?

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  6. What are Enzymes ? Give important characteristics of enzyme catalysis.

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  7. Give the mechanism of heterogeneous catalysed reaction.

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  8. Explain two applications of enzymes.

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  9. What are colloids ?

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  10. which are the properties of colloidal solution ?

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  11. What is the difference between true solution and colloidal solution?

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  12. Give three differences between suspension and colloid solution.

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  13. Name the dispersed phase and dispersion mediumin fog.

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  14. Comment on the statement that “colloid is not a substance but a state ...

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  15. What are lyophilic and lyophobic sols ? Give one example of each. Why ...

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  16. What are gels ? Give an example of elastic and non-elastic gel.

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  17. How will you differentiate Lyophilic colloids from Lyophobic colloids?

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  18. Lyophillic colloids are more stable than lyophobic colloids. Explain.

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  19. What is the difference between multimolecular and macromolecular collo...

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  20. Give three differences between multimolecular colloids and macromolecu...

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