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Q#1
Heterogenous Reaction Systems
GATE CH 2023
NAT
+2 marks
-0 marks
Fresh catalyst is loaded into a reactor before the start of the following catalytic reaction.
A → products
The catalyst gets deactivated over time. The instantaneous activity a(t), at time t, is defined as the ratio of the rate of reaction\(-r_A'(t) (mol.(g cat)^{-1} hr^{-1})\)to the rate of reaction with fresh catalyst. Controlled experimental measurements led to an empirical correlation
\(-r_A'(t) = - 0.5t + 10\)
where t is in hours. The activity of the catalyst at t = 10 hr is______(rounded off to one decimal place).
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