Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

Chemical Reaction Engineering
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

None of these

There is no dynamic equilibrium between successive layer

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process

Langmuir

None of these

There is no dynamic equilibrium between successive layer

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process

Langmuir

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Chemical Reaction Engineering
The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is

1

3

2

0.5

1

3

2

0.5

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Chemical Reaction Engineering
Signal normally used to study non-ideal flow by stimulus response technique is __________ input.

Step

Pulse

Both A & B

Neither A nor B

Step

Pulse

Both A & B

Neither A nor B

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Chemical Reaction Engineering
Space time in flow reactor is

Both A and B

Usually equal to the residence time

The reciprocal of the space velocity

A measure of its capacity

Both A and B

Usually equal to the residence time

The reciprocal of the space velocity

A measure of its capacity

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Chemical Reaction Engineering
The space time is equivalent to the holding time in a steady state mixed reactor for

Gas reactions with changing no. of moles

Variable fluid density systems

Non-isothermal gas reaction

Constant fluid density systems

Gas reactions with changing no. of moles

Variable fluid density systems

Non-isothermal gas reaction

Constant fluid density systems

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Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Surface reaction between absorbed A and absorbed B

Surface reaction between A in the gas phase and absorbed B

Surface reaction between absorbed A and B in the gas phase

Absorption of A

Surface reaction between absorbed A and absorbed B

Surface reaction between A in the gas phase and absorbed B

Surface reaction between absorbed A and B in the gas phase

Absorption of A

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Chemical Reaction Engineering

Chemical Reaction Engineering Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

Chemical Reaction Engineering The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is

Chemical Reaction Engineering Signal normally used to study non-ideal flow by stimulus response technique is __________ input.

Chemical Reaction Engineering Space time in flow reactor is

Chemical Reaction Engineering The space time is equivalent to the holding time in a steady state mixed reactor for

Chemical Reaction Engineering The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Chemical Reaction Engineering
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

Chemical Reaction Engineering
The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is

Chemical Reaction Engineering
Signal normally used to study non-ideal flow by stimulus response technique is __________ input.

Chemical Reaction Engineering
Space time in flow reactor is

Chemical Reaction Engineering
The space time is equivalent to the holding time in a steady state mixed reactor for

Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.