Abstract
Carbonaceous deposits on HZSM-5 zeolite samples deactivated during coupled methanol/n-butane cracking were investigated by temperature-programmed oxidation. With the progressive dealumination on-stream and the unaccessibility of the active sites, an increased amount of deposited coke could be observed. The H/C ratio found depends both on the concentration of acid sites and on time onstream.
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Martin, A., Parlitz, B. Effect of reaction time on the H/C-ratio of coke formed during CMHC on HZSM-5 catalysts. React Kinet Catal Lett 51, 245–251 (1993). https://doi.org/10.1007/BF02069064
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DOI: https://doi.org/10.1007/BF02069064