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Two different porous catalyst particles having equal surface to volume ratios and pore areas are used to carry out a liquid phase reaction with a first order reaction rate- one is disk-shaped with thickness B=4 mm and diameter d=48 mm while the other is spherical with radius R=6 mm. The effective first order reaction rate constant k = 2.5 s-1 and the effective diffusivity D = 1.5 x 10-5 m2/s for both particles.
a. Evaluate the external surface area Sp and the volume Vp as well as the ratio Sp/Vp for the two particles.
b. Evaluate the Thiele modulus for each particle and then the effectiveness factor for each particle from the results derived in class. Compare the two sets of values and comment briefly on their physical significance. Which of the particles has the greater diffusion limitation - (a) from the Thiele modulus comparison and (b) from the effectiveness factor comparison?
Design a condenser for the following duty: 45,000 kg/h of mixed light hydrocarbon vapors to be condensed. The condenser is to operate at 10 bar. The vapor will enter the condenser saturated at 60 °C and the condensation will be complete at 45 °C.
Weight Percentage of MTBE (methyl tert-butylether) in Gasoline : Oxygen Content, If gasoline had a hypothetical chemical formula of C8H17, and we knew the chemical formula of MTBE as CH3OC4H9, what weight (actual weight and percent by weight) of M..
Consider that you are a senior consulting engineer and that you need to explain the topic in a written report to your customer, who is the managing director of a large company, and a commerce or law graduate.
HEAT TRANSFER PROBLEMS NO16- Water flowing in a steel pipe of diameter 0.02 m is to be cooled from 40 to 30 oc . The velocity of water in the steel pipe is 1.5 m/s .
Why fluids are important in chemical engineering - enormous number of materials normally exist as gases or liquids, or can be transformed into such phase and explain systematic description of change in fluid systems, mechanical change
Elaborate on the hierarchy of control measures used in Industrial Hygiene How would you calculate the noise problem at the factory and what control measures would you consider before you recommend the supply of hearing protection to personnel ex..
Give you four samples and tell you they are lysine (an amino acid), lactose (a disaccharide), insulin ( a protein hormone), and RNA. The sample are in test tubes marked 1,2,3 and 4, but you don't know which compound is in which tube. you need to iden..
Carolina (H2C=CHCHO) is made by selective oxidation of propylene at 2 bar, 350 °C using a molybdenum, iron, and bismuth catalyst on a silica support
primitive problem statementa 100 million tonsyear chemical product as shown in the table 1 is to be manufacture as per
Calculate the wavelength, in meters of a photon capable of exciting an electron in He+ from the ground state to n = 4
Calculate the molar fraction of the system in the vapor phase
Which do you think would make the best resistor and why?
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