3. (a) Answer the following questions related to catalyst selection and deactivation as applied to heterogeneous catalysis in typical dehydrogenation of ethyl benzene to styrene: 10 marks What type of catalyst(s) and/or support would you recommend for the maximum selectivity of styrene? (4 marks) What mechanism(s) might be responsible for deactivation of the catalysts? What might be the likely species responsible for deactivation? (4 marks) What would you recommend to reactivate the catalysts? (2 marks) (b) (c)
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