A 1.0% Pd/SiO2 catalyst for SO2 oxidation is being studied using a stoichiometric O2/SO2 feed ratio at a total pressure of 2 atm. At a temperature of 673 K, a rate of 2:0 mole SO2 s-1 L cat-1 occurs. The average velocity for SO2 molecules is 3 x 104 cm s-1, and the average pore diameter in the alumina is 120 A ˚ (10 A = 1 nm). Assume the Pd is uniformly distributed throughout the catalyst particles. What is the largest particle size (diameter in cm) one can use in the reactor and still be assured that you have no significant diffusion effects?
Answer to relevant QuestionsConsider a “two-dimensional” state of stress in the x–y plane characterized by: σxx = 17.24 σyy = 35.86 τxy = 25.52 Where units are MPa and tension is positive. Find: the magnitude and direction of the ...Utilize the data given in Problem 4.5, assume the benzene hydrogenation reaction is zero order in benzene and first order in H2, and then calculate the Thiele modulus for the largest and smallest catalyst particles assuming ...Consider a “two-dimensional” state of stress in the x–y plane characterized by: σxx = 35.86 σyy = 17.24 τxy = −25.52 Where units are MPa and tension is positive. Find: the magnitude and ...Strain measurements are made on a wide, flat bench in a dimension stone quarry using a 0-45-90 rosette. The 0-gauge is oriented N60E. Specific weight of the stone (a granite) is 162 pcf (25.6 kN/m3); Young’s modulus E = ...Suppose an NX-size test cylinder with an L/D ratio of two has a Young’s modulus of 68.97 GPa, a Poisson’s ratio of 0.35, and fails in uniaxial compressive at 0.1% strain. Find:Br> 1 The axial load (kN) and stress ...
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