Effect of support activation on the kinetics of indole hydrodenitrogenation over mesoporous carbon black composites-supported molybdenum carbide

• Published in: Fuel processing technology Vol. 77; pp. 261 - 267
• Main Authors: Sayag, C, Suppan, S, Trawczyński, J, Djéga-Mariadassou, G
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 20.06.2002; Elsevier Science
• Subjects: Applied sciences; Carbon black composite; CO titration; Crude oil, natural gas and petroleum products; Energy; Exact sciences and technology; Fuels; Hydrodenitrogenation; Indole; Molybdenum carbide; Oxidative treatment; Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units; Temperature programmed reduction; Hydrodenitrogenation; Indole; Temperature programmed reduction; Oxidative treatment; Carbon black composite; Molybdenum carbide; CO titration; Petrochemical industry; Molybdenum Carbides; Carbon black; Refining; Activation; Kinetics; Porosity; Catalyst activity; Supported catalyst
• ISSN: 0378-3820; 1873-7188
• DOI: 10.1016/S0378-3820(02)00038-3

The catalytic activity of supported molybdenum carbide was examined versus activation of the carbon support. A mesoporous carbon black composite (CBC) support was used and activated with either HNO 3 or H 2O 2 for 0.5 h. After impregnation and carburisation, the β-Mo 2C hexagonal compact crystallographic phase was obtained as the unique active phase. Several techniques (porosity measurements, X-ray diffraction (XRD), elemental analysis) were used in order to characterise the catalyst's physical properties. The temperature-programmed reduction (TPR) analysis and CO titration performed on these samples underlined an effect of oxidative treatment with H 2O 2 and HNO 3 on the active phase dispersion. The kinetic study of the hydrodenitrogenation (HDN) of indole on these carbon materials-supported molybdenum carbide was improved when the support was activated.