For a heterogeneous catalytic reaction

Chemical Reaction Engineering
For a heterogeneous catalytic reaction

The surface of the catalyst does not play an important role during reaction

The catalyst does not form an intermediate complex with the reactant

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

The surface of the catalyst does not play an important role during reaction

The catalyst does not form an intermediate complex with the reactant

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

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Chemical Reaction Engineering
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is

One

Three

Zero

Two

One

Three

Zero

Two

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Chemical Reaction Engineering
The importance of diffusion in a catalyst are increased by

An active surface of the catalyst

All of these

Small pore diameter

Large catalyst particle size

An active surface of the catalyst

All of these

Small pore diameter

Large catalyst particle size

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Chemical Reaction Engineering
When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value.

Twice

None of these

Half

Equal

Twice

None of these

Half

Equal

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Chemical Reaction Engineering
A catalyst loses its activity due to

Loss in surface area of the active component

All of these

Agglomeration of metal particles caused by thermal sintering of the solid surface

Covering of the catalytic active sites by a foregin substance

Loss in surface area of the active component

All of these

Agglomeration of metal particles caused by thermal sintering of the solid surface

Covering of the catalytic active sites by a foregin substance

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Chemical Reaction Engineering
Which of the following will give maximum gas conversion?

Fixed bed reactor

Plug-flow catalytic reactor

Semi-fluidised bed reactor

Fluidised bed reactor

Fixed bed reactor

Plug-flow catalytic reactor

Semi-fluidised bed reactor

Fluidised bed reactor

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Chemical Reaction Engineering

Chemical Reaction Engineering For a heterogeneous catalytic reaction

Chemical Reaction Engineering If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is

Chemical Reaction Engineering The importance of diffusion in a catalyst are increased by

Chemical Reaction Engineering When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value.

Chemical Reaction Engineering A catalyst loses its activity due to

Chemical Reaction Engineering Which of the following will give maximum gas conversion?

Chemical Reaction Engineering
For a heterogeneous catalytic reaction

Chemical Reaction Engineering
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is

Chemical Reaction Engineering
The importance of diffusion in a catalyst are increased by

Chemical Reaction Engineering
When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value.

Chemical Reaction Engineering
A catalyst loses its activity due to

Chemical Reaction Engineering
Which of the following will give maximum gas conversion?