학술논문
Competitive adsorptions between thiophenic compounds over a CoMoS/Al2O3 catalyst under deep HDS of FCC gasoline.
Document Type
Article
Source
Subject
*ADSORPTION (Chemistry)
*THIAMPHENICOL
*GASOLINE
*CATALYSTS
*TEMPERATURE
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Language
ISSN
0926-860X
Abstract
Graphical abstract Highlights • Quantitative reactivity scale of sulfur model compounds. • Kinetic modeling of inhibiting effect. • Competitive adsorption between sulfur reactants. • Adsorption constant of BT higher than that of 2MT. Abstract The transformation of various model sulfur compounds (2-methylthiophene: 2MT, 3-methylthiophene: 3MT and benzothiophene: BT) representative of sulfur compounds in FCC gasoline was investigated over a CoMoS/Al2O3 catalyst. More specifically, a quantitative reactivity scale was established with BT being more reactive than 3MT and 2MT. In mixture, their reactivity was reduced due to the presence of the other sulfur compound, the scale of reactivity being preserved. BT strongly inhibits the transformation of 2MT. With a single kinetic model based on a Langmuir Hinshelwood formalism, kinetic and adsorption parameters were calculated and the results explained by mutual competitive adsorption between 2MT and BT with a higher adsorption constant for BT compared to that of 2MT. [ABSTRACT FROM AUTHOR]