Hydrotreating of Gas Oil, Jatropha Oil, and Their Blends Using a Carbon Supported Cobalt-Molybdenum Catalyst

Abstract

Hydrotreating of Jatropha oil and Jatropha oil blended gas oil feeds were studied under diesel hydrotreating conditions using Cobalt-Molybdenum catalyst on activated carbon. The experiments were carried out in pilot plant for more than 90 days first with gas oil, followed by 5%, 10%, and 20% Jatropha oil in gas oil and finally with Jatropha oil alone. Deactivation of the catalyst was not observed up to hydrotreating of 20 wt% Jatropha oil in gas oil, but, the reactor pressure shoots up after seven days of running neat Jatropha oil. The liquid products were characterized by GC-MS analysis, distillation, density, sulfur, nitrogen, and Cetane Index.

Keywords:

• hydrotreating
• hydrodesulfurization
• hydrodeoxygenation
• gas oil
• activated carbon
• coprocessing
• Jatropha oil