If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

Chemical Reaction Engineering
If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

Neither A nor B

Both A & B

Temperature

Pressure

Neither A nor B

Both A & B

Temperature

Pressure

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Chemical Reaction Engineering
An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

Decrease

Increase exponentially

Remain unchanged

Increase

Decrease

Increase exponentially

Remain unchanged

Increase

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Chemical Reaction Engineering
The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)

ΔHA + ΔHR

E

E + ΔHA

E + ΔHA - ΔHR

ΔHA + ΔHR

E

E + ΔHA

E + ΔHA - ΔHR

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Chemical Reaction Engineering
Design of heterogeous catalytic reactor involves consideration of __________ steps.

Both A & B

Neither A nor B

Only chemical

Only physical

Both A & B

Neither A nor B

Only chemical

Only physical

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Chemical Reaction Engineering
The units of frequency factor in Arhenious equation

Are cycles per unit time

Depend on temperature, pressure etc. of the reaction

Are the same as those of the rate constant

Depend on the order of the reaction

Are cycles per unit time

Depend on temperature, pressure etc. of the reaction

Are the same as those of the rate constant

Depend on the order of the reaction

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Chemical Reaction Engineering
The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is

1

1.5

0

2

1

1.5

0

2

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Chemical Reaction Engineering

Chemical Reaction Engineering If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

Chemical Reaction Engineering An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

Chemical Reaction Engineering Design of heterogeous catalytic reactor involves consideration of __________ steps.

Chemical Reaction Engineering The units of frequency factor in Arhenious equation

Chemical Reaction Engineering The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is

Chemical Reaction Engineering
If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

Chemical Reaction Engineering
An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

Chemical Reaction Engineering
Design of heterogeous catalytic reactor involves consideration of __________ steps.

Chemical Reaction Engineering
The units of frequency factor in Arhenious equation

Chemical Reaction Engineering
The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is