Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Chemical Reaction Engineering
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Tan hT/T

Tan T/T

None of these

Tan hT/tan T

Tan hT/T

Tan T/T

None of these

Tan hT/tan T

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Chemical Reaction Engineering
A catalyst loses its activity due to

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

Covering of the catalytic active sites by a foregin substance

All of these

Loss in surface area of the active component

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

Covering of the catalytic active sites by a foregin substance

All of these

Loss in surface area of the active component

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Chemical Reaction Engineering
The effect of increasing pressure on the gaseous equilibrium of the reaction 2X+3Y ⇋ 3X+2Y indicates that

Pressure has no effect

Backward reaction is favoured

None of these

Forward reaction is favoured

Pressure has no effect

Backward reaction is favoured

None of these

Forward reaction is favoured

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Chemical Reaction Engineering
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Unpredictable from the data

Equal to

Smaller than

Greater than

Unpredictable from the data

Equal to

Smaller than

Greater than

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Chemical Reaction Engineering
The reactions of high molecularity are rare, because

Many body collisions are not favoured energetically

Of requirement of very large concentration for such reactions

Of very large activation energy of many bodies

Of low probability of many body collisions

Many body collisions are not favoured energetically

Of requirement of very large concentration for such reactions

Of very large activation energy of many bodies

Of low probability of many body collisions

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Chemical Reaction Engineering
Catalyst carriers

Have very high selectivity

Increase the activity of a catalyst

Provide large surface area with a small amount of active material

Inhibit catalyst poisoning

Have very high selectivity

Increase the activity of a catalyst

Provide large surface area with a small amount of active material

Inhibit catalyst poisoning

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Chemical Reaction Engineering

Chemical Reaction Engineering Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Chemical Reaction Engineering A catalyst loses its activity due to

Chemical Reaction Engineering The effect of increasing pressure on the gaseous equilibrium of the reaction 2X+3Y ⇋ 3X+2Y indicates that

Chemical Reaction Engineering The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Chemical Reaction Engineering The reactions of high molecularity are rare, because

Chemical Reaction Engineering Catalyst carriers

Chemical Reaction Engineering
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Chemical Reaction Engineering
A catalyst loses its activity due to

Chemical Reaction Engineering
The effect of increasing pressure on the gaseous equilibrium of the reaction 2X+3Y ⇋ 3X+2Y indicates that

Chemical Reaction Engineering
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Chemical Reaction Engineering
The reactions of high molecularity are rare, because

Chemical Reaction Engineering
Catalyst carriers