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- W3134986156 endingPage "120472" @default.
- W3134986156 startingPage "120472" @default.
- W3134986156 abstract "According to the regulation announced by International Air Transport Association to reduce greenhouse gas emissions, there are many attempts to produce bio-jet fuels from natural oils to replace, at least in part, the fossil fuels. However, bio-jet fuels usually suffer from poor cold flow properties. Hence, this research aimed to convert palm olein to bio-jet fuel range with high content of iso-alkanes via hydroconversion over nickel (Ni)/zeolite-based catalysts. The levels of liquid biofuels classified as bio-gasoline, bio-jet and green diesel, including the selectivity for chemical compositions were evaluated. Under 40 bar initial H2 pressure at 360 °C for 4 h, the use of Ni/NH4-Beta catalysts (Ni content = 10 wt%) provided the maximum iso-/n-alkane ratio at 1.67 with a bio-jet yield of 20.8 wt%. The schematic reaction mechanism for this process was also proposed. The incorporation of platinum (Pt) into the Ni/NH4-Beta catalysts to a Pt/(Pt + Ni) wt ratio of 0.24 increased the bio-jet yield to 28.7 wt% with iso-/n-alkane ratio of 1.02. Differential scanning calorimetry thermograms indicated that the freezing temperature (Tf) of the biofuels decreased with increasing iso-/n-alkane ratio, where the Tf of the liquid biofuels with iso-/n-alkane ratio > 1.00 was not observed. For the biofuels/fossil jet fuel (Jet A-1) blends, the use of biofuels having iso-/n-alkane ratio of 1.67 could be blended with Jet A-1 up to 50/50 (v/v) and the Tf of the blended jet fuel was found at ca. −80 °C, which was lower than the limitation according to ASTM D1655-04a (−47 °C)." @default.
- W3134986156 created "2021-03-15" @default.
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- W3134986156 date "2021-06-01" @default.
- W3134986156 modified "2023-10-17" @default.
- W3134986156 title "Bio-jet fuel range in biofuels derived from hydroconversion of palm olein over Ni/zeolite catalysts and freezing point of biofuels/Jet A-1 blends" @default.
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- W3134986156 doi "https://doi.org/10.1016/j.fuel.2021.120472" @default.
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