URGENT SUBJECT: CHEMICAL REACTION ENGINEERING 2 (a) An irreversible gas phase reaction, 2𝐴 → 𝐵 + 𝐶 is carried out isothe

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URGENT
SUBJECT: CHEMICAL REACTION ENGINEERING 2
(a) An irreversible gas phase reaction, 2𝐴 → 𝐵 + 𝐶 is carriedout isothermally in a fixed bed reactor (ID = 0.05 m) using 1 g ofPt/γ-Al2O3 catalyst. The reaction follows the first order ratelaw:−𝑟𝐴 = 𝑘𝐶𝐴. Three batches of Pt/γAl2O3 catalysts (Table 1) withdifferent particle diameter (dp) and specific surface area (Sa)were investigated using the reactor. All particles were inspherical shape. Table 1: Catalyst properties Catalyst dp, m Sa, m2g -1 Density (ρb), kg m-3 Catalyst-1 0.007 1000 80 Catalyst-2 0.0051200 95 Catalyst-3 0.003 1500 150 Pure A is fed to the reactorunder following conditions: P = 10 atm; T = 573 K; volumetricflowrate, v0 = 0.006 m3 s -1 . The intrinsic specific rate constantwas reported as, k = 7.73× 101 s -1 . Under the above-mentionedconditions, the reaction was assumed to be mass-transfercontrolled. (i) Estimate the values of internal and overalleffectiveness factor for all catalysts. [20 Marks] [CO3, PO4, C6](ii) Verify if the internal diffusion limits the reaction for allcatalysts. [5 Marks]

Urgent Subject Chemical Reaction Engineering 2 A An Irreversible Gas Phase Reaction 2a B C Is Carried Out Isothe 1 (123.26 KiB) Viewed 34 times

(a) An irreversible gas phase reaction, 2A → B + C is carried out isothermally in a fixed bed reactor (ID = 0.05 m) using 1 g of Pt/y-Al2O3 catalyst. The reaction follows the first order rate law:-TA = KC₁. Three batches of Pt/y- Al2O3 catalysts (Table 1) with different particle diameter (dp) and specific surface area (Sa) were investigated using the reactor. All particles were in spherical shape. Catalyst Catalyst-1 Catalyst-2 Catalyst-3 dp, m 0.007 0.005 0.003 (ii) Table 1: Catalyst properties Sa, m² g-¹ 1000 1200 1500 Density (pb), kg m-³ 80 95 150 = Pure A is fed to the reactor under following conditions: P = 10 atm; T = 573 K; volumetric flowrate, vo = 0.006 m³s¹. The intrinsic specific rate constant was reported as, k = 7.73× 10¹ s¹¹. Under the above-mentioned conditions, the reaction was assumed to be mass-transfer controlled. (i) Estimate the values of internal and overall effectiveness factor for all catalysts. [20 Marks] [CO3, PO4, C6] Verify if the internal diffusion limits the reaction for all catalysts. [5 Marks] [CO3, PO4, C5]