Production of Hydroprocessed Renewable Jet Fuel over Hydrogen-active SAPO-11-based Catalyst

  • 林 聖富

Student thesis: Doctoral Thesis

Abstract

The role of single metal loaded on SAPO-11-based hydroprocessing catalyst to produce renewable jet fuel was investigated in this work First three metals nickel cobalt and molybdenum were loaded on SAPO-11 and their activities were tested over model feedstock n-hexadecane Among the three metals nickel showed highest conversion of 70% Then the Ni/SAPO-11 synthesized with (labelled as Ni/SAPO-11(CA)) and without citric acid activities were tested over hydroprocessed alkanes to produce hydroprocessed renewable jet fuel (HRJ) The Ni/SAPO-11(CA) catalyst showed higher selectivity towards shorter hydrocarbon chain (C8 – C14) of 48% than the Ni/SAPO-11 therefore it was chosen as the catalyst to produce HRJ Next the catalyst properties which consisted of its structure textural properties surface morphology and acidity were tested After that the reaction parameters were optimized using Taguchi method The best parameters were: temperature 380°C pressure 750 psi LHSV 0 5/h and H2-to-feeedstock ratio of 1250 which yielded in 73% hydroprocessing renewable jet fuel (HRJ) with 6 1 I/N ratio Finally the derived cetane number (DCN) and the flash point of HRJ were tested The HRJ DCN was 56 higher than that of Jet-A1 and JP-5 The flash point of HRJ was 56°C which showed compliance to the ASTM D7566 standard of above 38°C
Date of Award2021
Original languageEnglish
SupervisorWei-Cheng Wang (Supervisor)

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