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Templated mesoporous silicas and silica aerogels are different types of catalyst supports. The properties of these catalyst supports depend on their textural properties, including their porosity
(a) Compare these two types of catalyst supports in terms of chemical composition, synthetic methods and morphology.
In the Deacon process for the manufacture of chlorine, HC1 and O2 react to form Cl2 and H20. Sufficient air (21 mole% 02, 79% N2) is fed to provide 35% excess oxygen and the fractional conversion of HCI is 85%.
Calculate the quantity of lime and soda required in kg for softening 50000 litres of water if the purity of lime and soda are 80% and 90% repectively
Determine the readings of the two watt meters WA and WC, and verify that the sum of these readings equals the total power in the load.
Estimate the emission rate of SO 2 gas, for both types of coal above (a) and (b), in grams per second if the volume rate of gas emitted from the stack
.At time zero, the valve is opened; at time t, the valve is closed, and the bulkcontents are analyzed. Explain how this information can be used to calculate thediffusion coefficient in this binary gas mixture.
At 120 °C the saturation pressure of ethanol that is 4.3 bar. What is the state of ethanol at 120 °C and 10 bar (i.e., compressed liquid, saturated liquid/vapor, superheated vapor)? At 140 °Cand 1bar?
The ammonia mixture enters the tower enters the tower at a rate of 1000 ft3/min measured as dry gas at 60 oF and 1 atm. the pressure of both streams and throughout the tower = 15 lbf /in2 g. what percentage of the ammonia entering the tower is not ..
Show that a PI feedback controller is undesirable because it results in a differentiator in the forward path. Discuss the step response of the closedloop system.
The biot modulus for a 3 cm diameter sphere at 100degree C subjected to a convective air flow resulting in an average convective heat transfer coefficient from the surface of 30W/m2
Based on a typical water draw rate, the velocity over the pipe is 0.5 m/s. The hot oil maintains the outer surface temperature at 85°C and the water temperature is 37°C.
Does there exist a kinetic differential equation for which all the conditions (4.24) hold except the inequalities and which is still induced by a deficiency zero mechanism (although surely not by a generalised compartmental system)?
explain how a supercritical flow changes to a subcritical flow. You may need to refer text books and web pages to answer this question.
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