Consider a 5mm diameter solid catalyst particle suspended in a liquid where the bulk mole fraction...

 

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Consider a 5mm diameter solid catalyst particle suspended in a liquid where the bulk mole fraction of A is 0.7 and the total concentration is 40 000 mol/m³. On the surface, the following reaction occurs: 3A → B The reaction rate is relatively high (compared with the mass transfer rates). At a distance of 1cm from the particle surface, the mole fraction of A is measured to be 0.6. The effective diffusivity of component-A is 3.5 x 10-4 m²/s. a) Develop an expression describing mole fraction as a function of radial position [10] b) What is the molar flux toward the particle? c) What is the film thickness? [5] [5] Consider a 5mm diameter solid catalyst particle suspended in a liquid where the bulk mole fraction of A is 0.7 and the total concentration is 40 000 mol/m³. On the surface, the following reaction occurs: 3A → B The reaction rate is relatively high (compared with the mass transfer rates). At a distance of 1cm from the particle surface, the mole fraction of A is measured to be 0.6. The effective diffusivity of component-A is 3.5 x 10-4 m²/s. a) Develop an expression describing mole fraction as a function of radial position [10] b) What is the molar flux toward the particle? c) What is the film thickness? [5] [5]

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h D 80 In general NA NANB Stangent water now Boundary NA 1A ... View the full answer