Abstract
Results of the FT-IR studies have shown that the carbonaceous deposit formed over γ-Al2O3 has carboxylate character, while that formed over silica-alumina and HX zeolite is a mixture of the above and conventional (aromatic) coke. The deposit formed over HZSM-5 zeolite is composed mainly of conventional coke, however, species containing acetyl groups were also present. No carbonaceous deposit forms over A zeolite.
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Sarbak, Z. Fourier — Transform Infrared Studies on Coke Formation Over Alumina Silica-Alumina and Zeolites. Reaction Kinetics and Catalysis Letters 69, 177–181 (2000). https://doi.org/10.1023/A:1005677817180
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DOI: https://doi.org/10.1023/A:1005677817180