Optimization of aviation kerosene from one-step hydrotreatment of catalytic Jatropha oil over SDBS-Pt/SAPO-11 by response surface methodology. (August 2019)

• Record Type: Journal Article
• Authors: Li, Xingyong; Chen, Yubao; Hao, Yajie; Zhang, Xu; Du, Junchen; Zhang, Aimin
• Is Part Of: Renewable energy. Volume 139(2019)
• Page Start: 551
• Page End: 559
• Publication Date: 2019-08
• Subjects: Biological aviation kerosene -- Jatropha oil -- Pt/SAPO-11 catalyst -- Hydrotreating -- C8–C16 hydrocarbons -- Response surface methodology; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2019.01.085
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: The Pt/SAPO-11 was modified by sodium dodecyl benzene sulfonate (SDBS) to synthesize a new catalyst SDBS-Pt/SAPO-11 firstly. And then, the structure of SDBS-Pt/SAPO-11 was characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), N2 adsorption-desorption and transmission electron microscopy (TEM). Aviation kerosene was produced by one-step hydro treatment with Jatropha oil as raw material in a high-pressure fixed-bed reactor over SDBS-Pt/SAPO-11. Based on the Box-Behnken central composite design, maintenance temperature, pressure, liquid hourly space velocity (LHSV) and hydrogen/oil ratio (hydrogen volume/ Jatropha oil volume) were chosen as the four important factors with three levels. The process conditions were optimized by response surface methodology (RSM), and a mathematical model with a second order quadratic equation was developed for increasing C8 –C16 hydrocarbons. The optimized conditions were found to be a temperature at 410 °C, a pressure at 5 MPa, the LHSV at 1.2 h −1 and the hydrogen/oil ratio at 1000 NmL·mL −1 as the best operating conditions. The verification experiment was carried out 3 times and the selectivity of C8 –C16 hydrocarbons was found to be 59.51%, and the selectivity of C8 –C16 iso -alkanes was found to be 25.41%. Highlights: The catalyst Pt/SAPO-11 was modified by sodium dodecyl benzene sulfonate. The new catalyst SDBS-Pt/SAPO-11 had a complete structure by characterization. The SDBS-Pt/SAPO-11 had increased the selectivity of products. A mathematical model of the selectivity of products was developed by RSM.