6 CHAPTER 4 REACTION RATE IN CATALYTIC REACTORS 9. You are requested to perform a laboratory evaluation of a 1.5%Pd/ZrO2// monolith catalyst used in a coal-fired power plant. The coal contains 1000ppm of sulfur compounds and 2% ash. The catalyst is expected to abate CO and HC emissions. After 2 years of operation, an inspection by the local environmental agency claims it is not meeting regulations for either CO or HCs. a. Develop a short laboratory plan to perform the catalyst tests to determine its performance compared with the fresh catalyst. b. Assume you observe the following in the conversion versus temperature profile: The fresh catalyst lights off (begins to oxidize) the HC at 250C and reaches 505 conversion at 350C and 90 at 450C. The used catalyst lights off at 400C and reaches 70% conversion at 450C and 90F at 550C. Shetch the profiles and explain what occurred using some of the characterization tools we have studied