A cleaner process for hydrocracking of jatropha oil into green diesel

摘要

To achieve cleaner processing, Ni-HPW/Al_2O_3 was synthesized as a new green catalyst for producing biodiesel, and jatropha oil was transformed into hydrocarbons (primarily n-C_(15) to n-C_(18) alkanes) using the new catalyst. A 99.85% jatropha oil conversion rate and 85.52% selectivity of the n-C_(15) to n-C_(18) fractions were obtained at a temperature of 360°C, a pressure of 3.3MPa, a H_2/oil volume ratio of 600(Nm~3)/m~3, and a liquid hourly space velocity of 1.0h~(-1). It was also observed that higher reaction temperatures clearly favored oxygen removal from the hydrocracking products. During hydrocracking, the new catalyst was efficient and avoided H_2S pollution; it therefore has potential for use in the biodiesel industry.